DuPont Sourcing & Logistics — Hazardous Materials Safety Interpretation

Page 1U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration 1200 New Jersey Ave, S.E. Wash~ngton, D.C. 20590 Mr. Thomas Reese DuPont Sourcing & Logistics Distribution Safety & Security Team 4417 Lancaster Pike, Barley Mill Plaza 2212226 Wilmington, DE 19805 Ref. No. 09-0045 Dear Mr. Reese: This responds to your February 24,2009 email requesting clarification of international regulations authorized for use under the Hazardous Materials Regulations (HMR; 49 CFR Parts 17 1 - 180). Specifically, you ask for clarification of whether a portable tank, containing a Division 2.2 fire extinguishing agent, past the due date for periodic inspection or testing may be transported in accordance with the International Maritime Dangerous Goods (IMDG) Code back to the United States to be emptied and retested. In a follow-up telephone discussion with a member of my staff, you stated that each portable tank is actually emptied, with_ approximately 3% of the contents remaining in each tank, and that the tanks are to be shipped back to the United States for periodic testing. You ask whether your company must comply with both additional conditions specified in 6.7.3.15.6 of the IMDG Code to be allowed to transport the portable tanks past the retest date if your company is unable to comply with the general allowance that permits transportation of portable tanks that are not more than three months past their retest dates. The answer is no, you do not need to meet both of the additional conditions specified in 6.7.3.15.6 of the IMDG Code when transporting a portable tank that has passed its retest date. A portable tank filled prior to its retest date may be transported for a period of not more than three months beyond the retest date. Along with the general allowance, 6.7.3.15.6 provides for two additional options. A portable tank may be transported past its retest date after emptying but before cleaning, for purposes of performing the next required inspection or test (see 6.7.3.15.6.1). Further, a portable tank may be transported for a period of not more than six months beyond its retest date to allow the return of hazardous materials for disposal or recycling (see 6.7.3.15.6.2). Thus, your company's emptied portable tanks may be transported past their retest dates in accordance with#

Page 26.7.3.15.6.1 of the IMDG Code in order to perform the next required inspection or test. Finally, as authorized by $9 171.22 and 171.25 of the HMR, these portable tanks may be transported to the United States in accordance with the IMDG Code. I hope this information is helpful. If you have fwther questions, please do not hesitate to contact this office. Sincerely, pd harles E. ~ k t t s hief, Standards Development S of Hazardous Materials Standards#

Page 3Ber krn devrv, page 1 of2 Drakeford, Carolyn <PHMSA> _ IXX " XI^IIXXIqw --- a*~w-- --* -- ---*-*- - v I-% From: Betts, Charles <PHMSA> Sent: Tuesday, February 24,2009 1 :55 PM 09-00 4 To: Drakeford, Carolyn <PHMSA> Cc: Kelley, Shane <PHMSA>; Gorsky, Susan <PHMSA>; Pfund, Duane <PHMSA> Subject: FW: IMDG Code 6.7.3.15.6 Importance: High Attachments: FE-227 MSDS.pdf; FE-227 Technical Bulletin.pdf; CCRU537029 5-21062005.pdf; CCRU537218-5-01082005. pdf; ~ ~ ~ ~ 5 3 7 2 5 7 _ 5 _ 1 2 0 7 2 0 0 5 . ~ d f From: Thomas C Reese [mailto:Thomas.C.Reese-l@USA.dupont.com] Sent: Tue 2/24/2009 9:38 AM To: Kelley, Shane <PHMSA> Subject: IPIDG Code 6.7.3.15.6 To: Shane Kelley - DOT Washington, DC Good morning Shane. I support DuPont's FluoroChemicals Business which is located in Wilmington, DE. The business requested me to ask the DOT to send DuPont a letter indicating our three out of test portable tanks containing residual DuPont FE-227, and currently located in India, are allowed to be shipped back to the United States to be emptied and retested in accordance with section 6.7.3.15.6 of the IMDG Code. We also request the letter include a brief paragraph indicating the DOT'S interpretation of the word "and" which appears between 6.7.3.15.6.1 and 6.7.3.15.6.2. Previous communications from the DOT stated the word "and is intended to mean "or", such that the two conditions are separate and not tied together. We are asking the DOT to provide this letter because we have not been able to locate a facility in lndia to empty the tanks, clean them or retest them. Based on experience working with the ocean carriers operating out of India, we are confident they will refuse a shipment of any out of test tanks containing the residue of a dangerous good without a letter from the U.S. DOT. Lastly, our personnel located in lndia have tried contacting the Directorate General of Shipping in lndia to request a variance or a competent authority approval allowing the out of test tanks to be shipped. They have not had any success. The following information regarding DuPont FE-227 and the three tanks is provided. Product lnformation The product in the portable tanks is CIupontTM FE-2271M Fire Extinguishing Agent. DG Transport Information Proper Shipping Name : Hazard Class : I.D. No. : Heptafluoropropane 2 . 2 UN 3 2 9 6 Portable Tank lnformation Each tank contains 500-600 kilograms (1 102-1322 pounds) FE-227 My address is noted below. If you have any questions, please call me on (302) 992-3483. Any assistance you can provide to help us resolve this issue quickly is greatly appreciated.#

Page 4Page 2 of 2 Have a great day. TomReese HazMat Regulatory Compliance Consultant DuPont Sourcing & Logistics Distribution Safety & Security Team 441 7 Lancaster Pike Barley Mill Plaza 2212226 Wilmington, DE 19805 Phone: (302) 992-3483 (Ducom 9923483) FAX: 1-302-355-2891 (This not a Ducorn number) Internet: Thomas.C.Reese-1 @usa.dupont.com Hours: 8:00 AM - 5:00 PM This communication is for use by the intended recipient and contains information that may be Privileged, confidential or copyrighted under applicable law. If you are not the intended recipient, you are hereby formally notified that any use, copying or distribution of this e-mail, in whole or in part, is strictly prohibited. Please notify the sender by return e-mail and delete this e-mail from your system. Unless explicitly and conspicuously designated as "E-Contract Intended", this e-mail does not constitute a contract offer, a contract amendment, or an acceptance of a contract offer. This e-mail does not constitute a consent to the use of sender's contact information for direct marketing purposes or for transfers of data to third parties. Francais Deutsch Italiano Espanol Portugues Japanese Chinese Korean#

Page 5The MSDS format adheres to the standards and regulatory requirements of the United States and may not meet regulatory requirements in other countries. DuPon t Material Safety Data Sheet Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FE-227 6160FR Revised 5-JUN-2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHEMICAL PRODUCT/COMPANY IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Material Identification FE-227 is a registered trademark of DuPont. CAS Number : 431-89-0 Formula : CF3 CHF CF3 Molecular Weight : 170.03 CAS Name : Propane, 1,1,1,2,3,3,3-Heptafluoro- Tradenames and Synonyms 2-Hydroperfluoropropane Propane, 1,1,1,2,3,3,3-Heptafluoro- HFC-227ea 2-Hydroheptafluoropropane Heptafluoropropane 2-H-heptafluoropropane 1,1,1,2,3,3,3-Heptafluoropropane Company Identification MANUFACTURER/DISTRIBUTOR DuPont Fluoroproducts 1007 Market Street Wilmington, DE 19898 PHONE NUMBERS Product Information : 1-800-441-7515 (outside the U.S. 302-774-1000) Transport Emergency : CHEMTREC 1-800-424-9300(outside U.S. 703-527-3887) Medical Emergency : 1-800-441-3637 (outside the U.S. 302-774-1000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMPOSITION/INFORMATION ON INGREDIENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Component a Material 1,1,1,2,3,3,3-Heptafluoropropane Print Date: 8 - 13 - 2006#

Page 6DuPont Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HAZARDS IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . # Potential Health Effects Based on animal data, exposure to HFC-227ea by inhalation may cause suffocation, if air is displaced by vapors, and irregular heart beat with a strange sensation in the chest, "heart thumping," apprehension, lightheadedness, feeling of fainting, dizziness, weakness, sometimes progressing to loss of consciousness and death. HFC-227ea may cause frostbite if liquid or escaping vapor contacts the skin. HFC-227ea may cause "frostbite-likew effects if the liquid or escaping vapors contact the eyes. In one study, human volunteers were selected to inhale HFC-227ea at a concentration of 6000 ppm but the study was terminated due to a rise in pulse rate that was believed to be unrelated to the chemical. In a subsequent study with human volunteers inhaling concentrations up to B O O 0 ppm no clinically significant effects were observed for any of the measured laboratory parameters. Individuals with preexisting diseases of the cardiovascular system or nervous system may have increased susceptibility from excessive exposures. Page 2 Carcinogenicity Information None of the components present in this material at concentrations equal to or greater than 0.1% are listed by IARC, NTP, OSHA or ACGIH as a carcinogen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIRST AID MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First Aid INHALATION If inhaled, immediately remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Call a physician. SKIN CONTACT Treat for frostbite if necessary by gently warming affected area. EYE CONTACT In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a physician. Print Date: 8 - 13 - 2006#

Page 7DuPont Material Safety Data Sheet (FIRST AID MEASURES - Continued) Page 3 INGESTION Ingestion is not considered a potential route of exposure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIRE FIGHTING MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flammable Properties 1,1,1,2,3,3,3-Heptafluoropropane is not flammable, however in the presence of a flame or ignition source it may decompose to form toxic hydrogen fluoride or carbonyl fluoride. Extinguishing Media Use media appropriate for surrounding material. Fire Fighting Instructions Self-contained breathing apparatus (SCBA) may be required if cylinders rupture or release under fire conditions. Keep cylinders cool with water spray applied from a safe distance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACCIDENTAL RELEASE MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safeguards (Personnel) NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before proceeding with clean-up. Use appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up. Evacuate personnel, thoroughly ventilate area, use self-contained breathing apparatus. Keep upwind of leak - evacuate until gas has dispersed. Initial Containment Use forced ventilation to disperse vapors. Print Date: 8 - 13 - 2006#

Page 8DuPon t Material Safety Data Sheet Page 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HANDLING AND STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Handling (Personnel) Do not breathe gas. Avoid contact with eyes, skin, or clothing. Wash thoroughly after handling. Wash clothing after use. Storage Store in a well ventilated place. Store in a cool, dry place. Keep container tightly closed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EXPOSURE CONTROLS/PERSONAL PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engineering Controls Use only with adequate ventilation. Keep container tightly closed. Personal Protective Equipment Wear safety glasses or coverall chemical splash goggles. RESPIRATORS Wear NIOSH approved respiratory protection, as appropriate. PROTECTIVE CLOTHING Where there is potential for skin contact have available and wear as appropriate impervious gloves, apron, pants, and jacket. Exposure Guidelines Exposure Limits FE-227 AEL * (DuPont) : 1000 ppm, 8 & 12 Hr. TWA * AEL is DuPont's Acceptable Exposure Limit. Where governmentally imposed occupational exposure limits which are lower than the AEL are in effect, such limits shall take precedence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PHYSICAL AND CHEMICAL PROPERTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Data Boiling Point Melting Point Vapor Pressure Liquid Density Critical temperature Critical pressure : -16.4 C (2.5 F) : -131 C (-204 F) : 65.7 psia O 25 C (77 F) (453.3 kPa) : 1.386 g/cm3 O 25 C (77 F) (86.53 lb/ft3) : 101.6 C (214.9 F) : 424.7 psia (2930 kPa) Print Date: 8 - 13 - 2006#

Page 9DuPont Material Safety Data Sheet (PHYSICAL AND CHEMICAL PROPERTIES - Continued) Odor Form : None. : Liquified Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . STABILITY AND REACTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chemical Stability Stable at normal temperatures and storage conditions. Avoid sources of heat or open flame. Incompatibility with Other Materials Incompatible with strong reducing agents such as alkali metals (e.g., sodium, potassium), alkali-earth metals (e.g., magnesium, calcium), and powdered aluminum or zinc. Decomposition Decomposes by reaction with high temperature (open flames, glowing metal surfaces, etc.) forming hydrofluoric acid, carbonyl fluorides, carbon monoxide and carbon dioxide. Polymerization Polymerization will not occur. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOXICOLOGICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . # Animal Data Page 5 Inhalation 4 hour LC50: > 788,698 pprn in rats Repeated exposure of rats by inhalation for 4 weeks at concentrations up to 50,000 pprn revealed no toxicologically significant6 effects. The NOEL for this study was 50,000 ppm. A 90-day inhalation study in rats did not find any exposure related effects at 105,000 ppm. The NOEL for this study was 105,000 ppm. Cardiac sensitization, a potentially fatal disturbance of heart rhythm associated with a heightened sensitivity to the action of epinephrine, occurred in dogs at 105,000 ppm. The NOAEL for cardiac sensitization was 90,000 ppm. In a different study to evaluate cardiac sensitization in dogs, concentrations of 90,000, 105,000, and 140,000 pprn caused a dose-related increase in incidence and severity; at 90,000 pprn efffects were minimal or mild in nature. Inhalation studies of HFC-227ea in rabbits and rats do not Print Date: 8 - 13 - 2006#

Page 10DuPont Material Safety Data Sheet (TOXICOLOGICAL INFORMATION - Continued) suggest developmental toxicity at concentrations up to 105,000 ppm. Tests have shown that HFC-227ea does not cause genetic damage in bacterial or mammalian cell cultures. Tests in animals for carcinogenicity or reproductive toxicity have not been conducted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISPOSAL CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waste Disposal Treatment, storage, transportation, and disposal must be in accordance with applicable Federal, State/Provincial, and Local regulations. Incinerate material in accordance with Federal, State/Provincial and Local requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TRANSPORTATION INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shipping Information DOT Proper Shipping Name : Heptafluoropropane Hazard Class : 2.2 I .D. No. (UN/NA) : UN 3296 DOT Label (s) : Nonflammable Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REGULATORY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U.S. Federal Regulations TSCA Inventory Status : Listed. TITLE I11 HAZARD CLASSIFICATIONS SECTIONS 311, 312 Acute : Yes Chronic : No Fire : No Reactivity : No Pressure : No . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OTHER INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NFPA, NPCA-HMIS NFPA Rating Health Flammability Reactivity NPCA-HMIS Rating Health Page 6 Print Date: 8 - 13 - 2006#

Page 11DuPon t Material Safety Data Sheet (Continued) Page 7 Flammability Reactivity Personal Protection rating to be supplied by user depending on use conditions. The data in this Material Safety Data Sheet relates only to the specific material designated herein and does not relate to use in combination with any other material or in any process. Responsibility for MSDS : MSDS Coordinator > : DuPont Fluoroproducts Address : Wilmington, DE 19898 Telephone : (800) 441-7515 # Indicates updated section. This information is based upon technical information believed to be reliable. It is subject to revision as additional knowledge and experience is gained. End of MSDS Print Date: 8 - 13 - 2006#

Page 12Technical Information Description Ever since Halon 1301 was targeted as a serious ozone- depleting substance, DuPont has been instrumental in developing and manufactur~ng non-ozone-depleting replace- ment agents. The most recent addition to DuPont's full line of Halon replacements is FE-227TM, or heptafluoropropane (HFC-227ea), which is the world's most widely used in-kind replacement for Halon 1301 in total flooding applications. FE-227TM effectively prevents or extinguishes all major classes of fires and is safe, clean, and electrically nonconduc- tive. Its boiling point is -16.45'C (2.4"F) making it useful for total flooding of enclosures at normal ambient temperatures. FE-227TM as a fire extinguishing composition is disclosed in U.S. Patent 5,084,190 which is assigned to DuPont. In addition, DuPont has a license to U.S. patent 5,124,053 which covers a method for extinguishing a fire. Performance The extinguishing concentration of FE-227TM on heptane fuel is 6.7% by volume as determined by the cup burner test. According to the 2000 edition of National Fire Protection Association (NFPA) standard 2001, the minimum design con- centration for Class B fires shall be 1.3 times the cup burner value. For Class A fuels the minimum design concentration is 1.2 times the extinguishing concentration for wood and polymeric materials as tested according to UL 2166, Standard for Halocarbon Clean Agent Extinguishing System Units. In comparison to Halon 1301, FE-227TM is a less efficient extinguishing agent, but this is not unexpected given the absence of bromine in the molecule. (It is bromine that made the Halon compounds extremely effective fire extinguishants, but also made them potent ozone depleters.) To overcome the lack of bromine, about two times as much FE-227TM must be used to achieve suppression under equivalent conditions. This presents no problem in designing and installing new sys- tems, but makes it unlikely that existing Halon 1301 systems could simply be refilled with an equal quantity of FE-227TM and achieve the same level of performance. Nevertheless, FE-227TM is expected to replace the majority of uses for Halon 1301. Applications FE-227TM has its greatest benefit when used as a total flood- ing agent to protect high-value critical equipment requiring a clean (leaves no residue), electrically nonconductive gaseous agent that is safe for people in the event of exposure. These applications typically exist in telecommunication facilities, computer rooms, process control centers and other electro- mechanical equipment rooms. A comparison of some properties of FE-227TM to Halon 1301 is in Table 1. The mlmcles of science-#

Page 13Table 1 Toxicity Properties Comparison Halon 1301 to FE-2271M FE-2271M has very low acute toxicity by inhalation. As with many other halocarbons and hydrocarbons, FE-2271M produc- Halon 1301 FE-2271M es a cardiac sensitization response in experimental screening stud~es. Thls cardiac sensitization response is observed in Chemical Formula CF3Br CF3CHFCF3 dogs at approximately 105.000 ppm (10.5% LOAEL), but not Ozone-Depletion Potential 10 0 at 90,000 ppm (9.0% NOAEL). In 1999, further research Molecular Weight 148.9 170.03 using an EPA-approved, physiologically-based pharmaco- kinetic (PBPK) model demonstrated that human exposure Boiling Point, "C (OF) -57.7 (-72.0) -16.45 (2.3) to FE-227TM for up to 5 minutes at concentrations of up to Critical Temperature, OC (OF) 67.0 (1 52.6) 101.7 (215) 10.5% v/v would not produce a blood level of FE-2271M as- Liquid Density at 77"F, Ib/ft3 96.01 86.53 sociated with cardiac sensitization. As with all HFC agents Vapor Pressure at 77OF, psia 234.8 66.0 used as fire suppressants, human exposure to concentrations above the NOAEL is limited to 5 minutes in duration. Heat of Vaporization at Boiling Point, Btullb 35.5 56.7 No other adverse effects were observed in rats exposed by Extingu~shing Concentration, inhalation at concentrations of up to 105,000 ppm for up to Heptane, Cup Burner, vol% 3.5 6.7 90 days. Acute Toxicity, ALC or 400,000- 2788,000 FE-2271M is not mutagenic. LC,, Rats; 4 hr-ppm 800,000* 'Estimated values Environmental FE-2271M or heptafluoropropane (CFJHFCF,) is environmen- tally acceptable with an ozone-depletion potential (ODP) of zero, a global warming potential of 2,900, based on a 100-yr horizon relative to CO,, and an atmospheric lifetime of 36.5 years. Figure 1. Saturated Vapor Pressure of DuPontTM FE-Z27TM Temperature, 'C -23 -12 -1 10 21 32 43 54 66 77 88 99 450 31 03 400 2758 350 241 3 m .- m * P a 300 2068 $ $ a 2 * 250 1724 E P P 0 0 200 - 1379 s - 51 51 $ 150 1034 2 100 689 50 345 0 0 -1 0 10 30 50 7 0 90 110 130 150 170 190 210 Temperature, "F#

Page 14In 1994 the EPA rated HFC-227ea as acceptable for use as a total flooding agent in occupied spaces under their Significant New Alternatives Policy (SNAP) program. Availability FE-227TM is available from DuPont in 150-pound cylinders, 1,200-pound containers and either 37,000-pound tank trailers or IS0 containers depending upon location. Regional stocks of FE-227TM are maintained globally in accordance with local demand. Materials Compatibility Selected elastomers were immersed in a liquidlvapor mixture of FE-227TM for two weeks at room temperature (23'C [74"F]). Eight of the nine common elastomers exhibited negligible swelling, weight gain, or hardness change after exposure. This is shown in Table 2. Plastics were evaluated in the same manner as the elasto- mers. Six of the plastics showed negligible effect (weight gain and surface condition). Results are summarized in Table 3. Most of the common metals such as steel, cast iron, brass, copper, tin, lead, and aluminum can be used in contact with FE-227TM under normal conditions. Vessels storing FE-227TM should be free of moisture. Specifications FE-227TM is of high organic purity and essentially residue- free, meeting the following quality specifications: Purity, % by weight, minimum 99.0 Moisture, ppm by weight, maximum 10 Acidity, ppm by weight, expressed as HCI, maximum Residue, % by volume, maximum 0.03 Table 2 Elastomer Compatibility Linear swell, Weight Gain, Hardness Change, Elastomer % YO units Butyl Nordel" EPDM Neoprene W NBR Hypalone CSM Vitone A Epichlorohydrin homopolymer FA polysulfide HvtreP TPE Table 3 Plastic Compatibility Weight Gain, Surface Plastic % Condition High-density polyethylene (HDPE) 0.1 1 No Change Polystyrene (PSI -0.03 No Change Polypropylene (PP) 0.06 No Change Acrylonitrile-butadiene-styrene (ABS) -0.03 No Change Polycarbonate (PC) -0.10 No Change Polymethyl methacrylate (PMMA) i t Nylon -0.1 7 No Change Teflona PTFE 5.23 No Change "Partly dissolved, deformed, and destroyed#

Page 15For further information regarding DuPont Fire Extinguishing Agents, contact: Americas Asia DuPont Fluoroproducts Chestnut Run Plaza 7 0 2 - 1 2 7 4 E P.O. Box 8 0 7 0 2 Wilmington, DE 1 9 8 8 0 Tel: ( 8 0 0 ) 4 7 3 - 7 7 9 0 DuPont Taiwan, Limited 13F, Hung Kuo Building 167 Tun Hwa North Road Taipei, Taiwan 1 0 5 ROC Tel: 8 8 6 - 2 - 2 5 1 44488 Europe DuPont de Nemours International S.A. 2, Chemin du Pavilion CH-1218 Le Grand-Saconnex Geneva, Switzerland Tel: 4 1 - 2 2 - 7 1 7 - 5 3 7 6 Copyright O2006 DuPont or ~ t s affiliates. All rights reserved.'rhe DuPont Oval Logo, DuPontN, The miracles of science", Nordel", Hypalonm, V~ton", Hytrelp, Teflon" and FETM, are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affil~ates. NO PART OFTHIS MATERIAL MAY BE REPRODUCED, STORED I N A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISE WITHOUT PERMISSION OF DUPONT. The information set forth herein is furnished free of charge and is based on technical data that DuPont believesto be reliable. It is intended for use by persons havingtechnical skill, attheir own discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves thattheir particular conditions of use present no health or safety hazards. Because conditions of product use are outside our control, w e make no warranties, express or implied, and assume no liability in connection with any use ofthis information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or a recommendation t o infringe any patents. (1 1/06) RWJ96 Prlnted In U.S.A [Replaces. H-88819-21 Reorder No. H-88819-3 The mlmcles of sctence-#

Page 16Office - Houston Tank Container Periodic lnspection Report Control No 20051283 Date 21 June2005 This certifies that the undernoted tank container has been reinspected in accordance with the regulations indicated. Note: RIDIADR Certification will be supplied upon request. Scope: 2% Year lnspection 5 Year lnspection Place of Inspection: Boasso, Houston Owner's Serial Number Owner: Eurotainer CCRU 537029-6 Manufacturer: CKT Rootselaar Manufacturer's Serial Number 18339 154129 Applicable Regulations: X CSC F BC 736 89 I .......................................... " ..................... Ixl M O .... 5 ............................................................................................................................ El AAR 600 ........................................................................... " ........................ " ..................................................... Ixl RIDlADR .... F.%!!?.!! .............................................................................................. TC impact -- -----------" ----" ..---- I BAM ............................. - ..................................................................................................... [xl UlC --..-- 70 --...-..-- -..--.----..--- X TIR NL 5 333 86 I - ................................... " .................................................................. I UN ...................................................................................................... " .................................................... 1 Pressure Relief valves1 lS' f d Full Flow Rate 480 m3/min 480 m31min 18.5 bar 18.5 bar Vacuum Seltin I lns~ections Performed N/A I In Order 1 Comments 1 Internal Inspection i j X ! External lns~ection I X ! Hydraulic Test 1 1 X I Pressure: 1 ) 29.7 bar 1 Leak Test i I x i i Pressure: i ( 6.9 bar 1 Fittings Inspection 1 x ! Frame lnsoection I i X I I Decals lns~ection 1 ' X i I I ( Steam Coils Test I I I I Pressure: I Comments: I I Passed inspection Stamping: I Main Data Plate: 06 05 LR I csc plate: 12 07 -- Gold cert 112005#

Page 17Lovd's Office Houston Tank Container Periodic Inspection Report register Control No 20051563 Date . 1 Augus: 2005 This certifies that the undernotod tank container has been reinspected in accordance with the regulations indicated. Note: RIDIADR Certification will be supplied upon request. Scope: 2¼ Year Inspoction X 6 Year Inspection Place of Inspection: STS, Houston Owner's Serial Number Owner: Eurotainer CCRU 537218-0 Manufacturer: CKT Rootselaar Manufacturer's Serial Number 1703 18 19113 Appilcable Regulations: CSC F BC 736 89 US-DOT _51 IMO 6 AAR 800 RID/ADR _F 3757 TC Impact BAM UIC 87. TIR NL 5 723 93 UN Tank Information Toro Weight: Max. Gross Weighl: 3D 460 Capacity: 8 430 Kg Inspaction Dates Dosign Tomp: 16 800 kg... This Inspection: Last Hydro Test: Initlel Hyciro Test: O6 03 09.93 Witness: Next Inspeciion Due: 02 08 08 05 Witness: BV MAWP Test Pressure: 55 *C il. Witness: LR LR 40 Bottom Discharge: Top Discharge: 18.46 bar bar Internal Inspection inspections Performed N/A In Order Comments Fusiblo link: + no. of closuros in serios: 3 Hydraulic Test Externat Inspection Leak Test Pressure: Sholl Matorial: 40 bar Shall Thickness: Hoads Thickness: Hoads Materint: 19.11 ....mm Pressure: Width: Height: 17.89 _mm Fitings Inspection 6.0 bar Frame dimensions: Lenelh: 2D: 8' Frame Inspection Docals Inspection Pressure Relief Valves por zie Stoam Colls Test Prossure: Manufacture/Type Serial Numbor MT Full Flow Rate 941 MT. 104 Comments: Vacuum Selling Operating Pressure 18.46 bar Bursting Disc N N 18.45 bar N N Early 5 year test as directed by owner: Passed Inspection Surveyor Stamping: M. Stevenson Data Plate: 08 05 LR SC Plato: 02 0B Gold cer 1/2005#

Page 18Office Houston Tank Container Periodic lnspection Report Control No 20051441 Date 12 July 2005 This certifies that the undernoted tank container has been reinspected in accordance with the regulations indicated. Note: RlDlADR Certification will be supplied upon request. Scope: 2% Year lnspection 5 Year lnspection Place of Inspection: STS, Houston Owner: Eurotainer Manufacturer: CKT Tankbouw Rootselaar - Owner's Serial Number CCRU 537257-6 Manufacturer's Serial Number 1703 5719195 Applicable Regulations: Ixl csc -..E.B!!.?.3s.ss ........................................................................................ El IMO .... 5 .... - ................. - - ................................................................................................. A I R 600 ............................................................................................................................................................ RlDlADR F5017 BV00 - - TC lrnpact ................................................................................................. .......... ........ -----..--- -------------.------ I BAM .......... _ ........... - ......................................... - ................................................................ UIC --.-------.----- 87 -..-. -- ---------..------------------.-- Ixl TIR _..NL5.723..?3 ......................................................................................... 0 UN ............................................................................................................................................................ Witness: 07 05 Witness: LR lns~ections Performed / N/A In Order 1 Comments Internal Inspection ; / X i External Inspection i j I X ! Hydraulic Test 1 i i x I Pressure: 1 40 bar I Leak Test 1 i I x I Pressure: j , 1 6.9 bar I Fittings lnspection 1 1 x 1 Frame Inspection 1 I X Decals lnspection , j j X ! Steam Coils Test X Pressure: I Pressure Relief Valves 1 lst Pd Manufacturerrrype 1 Gimej 1 Gimeg Serial Number 1 699 1 692 Full Flow Rate I Operating Pressure 1 18.45 bar 18.45 bar Hydro test early as directed by owner due to welding of barrels; Passed Vacuum Setting 1 N N inspection Bursting Disc 1 N , N I surveyor I Main Data Plate: 07 05 LR 01 08 Gold cert 112005#