NRS Ocean Logistics Ltd. — Hazardous Materials Safety Interpretation

Page 1U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration April 16, 2024 1200 New Jersey Avenue, SE Washington, DC 20590 Ms. Nicole Enright General Manager - Americas NRS Ocean Logistics Ltd. 10077 Grogan’s Mill Rd. Suite 280 The Woodlands, TX 77380 Reference No. 23-0101 Dear Ms. Enright: This letter is in response to your November 16, 2023, email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to the transportation of paraformaldehyde in United Nations (UN) portable tanks built in accordance with the International Maritime Dangerous Goods (IMDG) code instruction T3. Specifically, you ask whether the HMR authorize the portable tank described in your email for the transportation of “UN 2213, Paraformaldehyde, 4.1, PG III.” The answer is yes. The hazardous material description “UN 2213, Paraformaldehyde, 4.1, PG III,” is assigned bulk special provisions T1 and TP33 in § 172.101 of the Hazardous Materials Table (HMT). Although special provision T3 is not assigned to “UN 2213, Paraformaldehyde, 4.1, PG III,” the HMR authorize the use of a UN portable tank conforming to the alternative tank instructions listed in § 172.102(c)(7)(v). If your new UN portable tank meets the requirements of § 172.102(c)(7)(v), then the new UN portable tank could transport “UN 2213, Paraformaldehyde, 4.1, PG III.” In addition, when imported by vessel, and the IMDG Code is utilized, portable tanks with “higher test pressures, greater shell thicknesses, more stringent bottom opening and pressure-relief device arrangements” are authorized. See IMDG Code 4.2.5.2.5. I hope this information is helpful. Please contact us if we can be of further assistance. Sincerely, Steven W. Andrews Jr. Acting Chief, Regulatory Review and Reinvention Branch Standards and Rulemaking Division#

Page 2Pollack 23-0101 From: INFOCNTR (PHMSA) To: Dodd, Alice (PHMSA) Cc: Hazmat Interps Subject: FW: Letter of interpretation request for UN portable Silo Isotank Container Date: Friday, November 17, 2023 3:37:24 PM Attachments: image002.png Specification_GA drawing of N11065579.pdf 21-PARAFORMALDEHYDE USA GHS SDS VITUSA 2020-09-17.docx Hi Alice, Please see the below and attached interpretation request. Let me know if you have any questions on anything. Regards, -Breanna From: Nicole Enright <nenright@nrsgr.com> Sent: Thursday, November 16, 2023 4:40 PM To: INFOCNTR (PHMSA) <INFOCNTR.INFOCNTR@dot.gov> Cc: Jacques Corblin <corblin@nrsgr.com> Subject: Letter of interpretation request for UN portable Silo Isotank Container CAUTION: This email originated from outside of the Department of Transportation (DOT). Do not click on links or open attachments unless you recognize the sender and know the content is safe. Dear Breanna, Thanks for your call. I appreciate your help with this. We would like to have a letter of interpretation advising if the Isotank in the attached general arrangement drawing will be accepted by DOT for shipping the following product in the U.S. It seems that although it is not described in the attached SDS as hazardous material, the product is considered as UN2213 dangerous goods in IMDG as below screenshot. This product dislikes humidity, and we believe that it is always filled with inert gas and seeks to be loaded. Thanks & Best regards, Nicole Enright General Manager Americas NRS OCEAN LOGISTICS LTD. 832-731-7718 nenright@nrsgr.com From: Nicole Enright Sent: Monday, October 30, 2023 3:18 PM To: babara.alston.ctr@dot.gov Cc: Jacques Corblin <corblin@nrsgr.com> Subject: UN portable Silo Isotank Container Dear Barbara, Thanks for speaking with me regarding our new UN portable tank we will be importing to the US. Per your instructions, I’m attaching the general arrangement drawing and SDS of the product we will be importing in the tank container. As I mentioned, the UN portable tank is being built in accordance with IMDG and ADR/RID Portable Tank instruction: T3 as per attached specification. The tank will have a current periodic inspection certificate before it is shipped. I’ve also attached a copy of the SDS for the product we will be importing to the US. Please let me know if there is any other permit we need or if all of the above will be sufficient. Thanks & Best regards, Nicole https://integweb.nrsgroup.co.jp/ Inventory Control System Promotion Youtube#

Page 3PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. Issue date: 09/17/2020 Revision date: 09/17/2020 Version: 2.0 SECTION 1: Identification 1.1. Identification Product form : Mixture Product name : PARAFORMALDEHYDE 1.2. Recommended use and restrictions on use Use of the substance/mixture Restrictions on use : Raw material : Comply with the safety instructions 1.3. Supplier Manufacturer ERCROS S.A. Avda. Diagonal 595 Barcelona, 08014 - Spain T +34 93 4393009 - F +34 93 4308073 sdsercros@ercros.es Distributor VITUSA PRODUCTS, INC. 343 Snyder Avenue Berkeley Heights, NJ 07922 USA +1-908-665-2900 custserv@vitusaproducts.com 1.4. Emergency telephone number Emergency number : Manufacturing plant: Almussafes (Valencia) Tel.: +34 96 1782250 (24 h) Fax: +34 96 1784055 SECTION 2: Hazard(s) identification 2.1. Classification of the substance or mixture GHS US classification Acute Tox. 4 (Oral) Acute Tox. 4 (Inhalation:dust,mist) Skin Irrit. 2 Eye Dam. 1 Resp. Sens. 1 Skin Sens. 1 Carc. 1A Repr. 1B 2.2. GHS Label elements, including precautionary statements GHS US labeling Hazard pictograms (GHS US) : Signal word (GHS US) Hazard statements (GHS US) Precautionary statements (GHS US) : Danger : Harmful if swallowed or if inhaled Causes skin irritation Causes serious eye damage May cause an allergy or asthma symptoms or breathing difficulties if inhaled May cause an allergic skin reaction May cause cancer May damage fertility or the unborn child : If medical advice is needed, have product container or label at hand. Keep out of reach of children. Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Avoid breathing dust/fume/gas/mist/vapors/spray. Wash hands, forearms and face thoroughly after handling. Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Contaminated work clothing must not be allowed out of the workplace. Wear protective gloves/protective clothing/eye protection/face protection. 09/17/2020 EN (English US) FDS21-101 Page 1#

Page 4PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. If exposed or concerned: Get medical advice/attention. If swallowed: Call a poison center or doctor if you feel unwell. Rinse mouth. Call a poison center or doctor if you feel unwell. If on skin: Wash with plenty of water. Take off contaminated clothing and wash it before reuse. If skin irritation or rash occurs: Get medical advice/attention. If inhaled: If breathing is difficult, remove person to fresh air and keep comfortable for breathing. If experiencing respiratory symptoms: Call a poison center or doctor. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center or doctor. Wash contaminated clothing before reuse. Store locked up. Dispose of contents/container to hazardous or special waste collection point, in accordance with local, regional, national and/or international regulation. 2.3. Other hazards which do not result in classification Paraformaldehyde thermal decomposition produces formaldehyde vapours. Mixtures of air/formaldehyde are flammable from 7 to 73 % v/v. Reacts with oxidizers, reacts with strong acids and bases producing formaldehyde. Finely dispersed particles form explosive mixtures in air. 2.4. Unknown acute toxicity (GHS US) Not applicable SECTION 3: Composition/Information on ingredients 3.1. Substances Not applicable 3.2. Mixtures Name Product identifier % Paraformaldehyde (CAS-No.) 30525-89-4 88 – 97 Formaldehyde (CAS-No.) 50-00-0 0.1 – 1 Methyl alcohol (CAS-No.) 67-56-1 < 1 *Chemical name, CAS number and/or exact concentration have been withheld as a trade secret SECTION 4: First-aid measures 4.1. Description of first aid measures First-aid measures after inhalation First-aid measures after skin contact First-aid measures after eye contact First-aid measures after ingestion : If inhaled, remove to fresh air and keep at rest in a position comfortable for breathing. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. Call a POISON CENTER or doctor/physician if you feel unwell. : IF ON SKIN: Wash with plenty of Water. Take off contaminated clothing and wash it before reuse. If skin irritation or rash occurs: Get medical advice/attention. : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center or doctor/physician. : IF SWALLOWED: Do NOT induce vomiting. Rinse mouth. Never give anything by mouth to an unconscious person. Immediately call a poison center or doctor/physician. 4.2. Most important symptoms and effects (acute and delayed) Symptoms/effects after inhalation Symptoms/effects after skin contact Symptoms/effects after eye contact Symptoms/effects after ingestion Chronic symptoms : Harmful if inhaled. May cause irritation to the respiratory tract. May cause an allergy or asthma symptoms or breathing difficulties if inhaled. : Causes skin irritation. Symptoms may include redness, drying, defatting and cracking of the skin. May cause an allergic skin reaction. : Causes serious eye damage. Symptoms may include discomfort or pain, excess blinking and tear production, with marked redness and swelling of the conjunctiva. May cause burns. : Harmful if swallowed. May cause gastrointestinal irritation, nausea, vomiting and diarrhea. : May cause cancer. Causes damage to organs. Suspected of damaging fertility or the unborn child. 4.3. Immediate medical attention and special treatment, if necessary Symptoms may be delayed. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). 09/17/2020 EN (English US) 2/8#

Page 5PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. SECTION 5: Fire-fighting measures 5.1. Suitable (and unsuitable) extinguishing media Suitable extinguishing media Unsuitable extinguishing media : Carbon dioxide. Dry chemical. Water. Foam. : None known. 5.2. Specific hazards arising from the chemical Fire hazard Explosion hazard : Products of combustion may include, and are not limited to: oxides of carbon. Formaldehyde. Mixtures of air/formaldehyde are flammable from 7 to 73 % v/v. : May form flammable/explosive vapor-air mixture. 5.3. Special protective equipment and precautions for fire-fighters Protection during firefighting : Keep upwind of fire. Wear full fire fighting turn-out gear (full Bunker gear) and respiratory protection (SCBA). SECTION 6: Accidental release measures 6.1. Personal precautions, protective equipment and emergency procedures General measures : Use personal protection recommended in Section 8. Isolate the hazard area and deny entry to unnecessary and unprotected personnel. 6.1.1. For non-emergency personnel No additional information available 6.1.2. For emergency responders No additional information available 6.2. Environmental precautions Avoid release to the environment. Prevent entry to sewers and public waters. 6.3. Methods and material for containment and cleaning up For containment Methods for cleaning up : Contain spill, then place in a suitable container. Minimize dust generation. Do not flush to sewer or allow to enter waterways. Use appropriate Personal Protective Equipment (PPE). : Sweep or shovel spills into appropriate container for disposal. Provide ventilation. 6.4. Reference to other sections For further information refer to section 8: "Exposure controls/personal protection" SECTION 7: Handling and storage 7.1. Precautions for safe handling Precautions for safe handling Hygiene measures : If medical advice is needed, have product container or label at hand. Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Avoid breathing dust/fume/gas/mist/vapors/spray. When using do not eat, drink or smoke. Use only outdoors or in a well-ventilated area. Formaldehyde is subject to the standard 29 CFR 1910.1048, which may contain specific requirements for handling including protective equipment, regulated areas, monitoring and medical surveillance. The employer should review the standard and assure compliance with applicable requirements. : Wash contaminated clothing before reuse. Wash hands, forearms and face thoroughly after handling. 7.2. Conditions for safe storage, including any incompatibilities Storage conditions Storage temperature : Keep out of the reach of children. Keep container tightly closed. Store in a well-ventilated place. Store locked up. Store in dust-tight, dry, labelled containers. Avoid any dust buildup by frequent cleaning and suitable construction of the storage area. Moisture over 70% is recommended. : ≤ 25 °C SECTION 8: Exposure controls/personal protection 8.1. Control parameters Paraformaldehyde (30525-89-4) No additional information available Formaldehyde (50-00-0) USA - ACGIH - Occupational Exposure Limits ACGIH TWA (ppm) 0.1 ppm ACGIH STEL (ppm) 0.3 ppm 09/17/2020 EN (English US) 3/8#

Page 6PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. ACGIH chemical category dermal sensitizer, Confirmed Human Carcinogen USA - OSHA - Occupational Exposure Limits OSHA PEL (TWA) (ppm) 0.75 ppm OSHA PEL (STEL) (ppm) 2 ppm (see 29 CFR 1910.1048) USA - IDLH - Occupational Exposure Limits US IDLH (ppm) 20 ppm USA - NIOSH - Occupational Exposure Limits NIOSH REL (TWA) (ppm) 0.016 ppm NIOSH REL (ceiling) (ppm) 0.1 ppm US-NIOSH chemical category SK: DIR(IRR)-SEN Apr 2011 Methyl alcohol (67-56-1) USA - ACGIH - Occupational Exposure Limits ACGIH TWA (ppm) 200 ppm ACGIH STEL (ppm) 250 ppm ACGIH chemical category Skin - potential significant contribution to overall exposure by the cutaneous route USA - ACGIH - Biological Exposure Indices Biological Exposure Indices (BEI) 15 mg/l Parameter: Methanol - Medium: urine - Sampling time: end of shift (background, nonspecific) USA - OSHA - Occupational Exposure Limits OSHA PEL (TWA) (mg/m³) 260 mg/m³ OSHA PEL (TWA) (ppm) 200 ppm USA - IDLH - Occupational Exposure Limits US IDLH (ppm) 6000 ppm USA - NIOSH - Occupational Exposure Limits NIOSH REL (TWA) (mg/m³) 260 mg/m³ NIOSH REL (TWA) (ppm) 200 ppm NIOSH REL (STEL) (mg/m³) 325 mg/m³ NIOSH REL (STEL) (ppm) 250 ppm US-NIOSH chemical category Potential for dermal absorption 8.2. Appropriate engineering controls Appropriate engineering controls Environmental exposure controls : Ensure good ventilation of the work station. : Avoid release to the environment. 8.3. Individual protection measures/Personal protective equipment Hand protection: Wear suitable gloves Eye protection: Wear eye/face protection Skin and body protection: Wear suitable protective clothing Respiratory protection: Respirator selection must be based on known or anticipated exposure levels, the hazards of the product and the safe working limits of the selected respirator. In case of insufficient ventilation, wear suitable respiratory equipment Other information: Handle in accordance with good industrial hygiene and safety procedures. Do not eat, drink or smoke when using this product. SECTION 9: Physical and chemical properties 9.1. Information on basic physical and chemical properties Physical state : Solid Appearance : Free-flowing prills. Color : White 09/17/2020 EN (English US) 4/8#

Page 7PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. Odor : Characteristic Pungent Odor threshold : No data available pH : 3 – 7 (10% aqueous suspension) Melting point : 130 °C (emission of volatile flammable) Freezing point : 130 °C (emission of volatile flammable) Boiling point : No data available Flash point : 71 °C (closed cup); 93 º C (open cup) Relative evaporation rate (butyl acetate=1) : No data available Flammability (solid, gas) : Not readily combustible (UN Test N.1) Vapor pressure : 1.2 mm Hg at 20 ºC; 6.0 mm Hg at 40 º C Relative vapor density at 20 °C : No data available Relative density : 800 Kg/m3 Solubility : Very low in cold water. The solubility in water increases noticeably with temperature, being increased at pH <2 or pH>9. Partition coefficient n-octanol/water Auto-ignition temperature : No data available : 300 °C Minimum Ignition Temperature - Dust Layer 130ºC; Minimum Ignition Temperature - Dust Cloud 300ºC Decomposition temperature : No data available Viscosity, kinematic : Not applicable Viscosity, dynamic : Not applicable Explosion limits : Lower explosive limit (LEL): 7 vol % in air Upper explosive limit (UEL): 73 vol % in air Explosive properties Oxidizing properties : No data available : Non oxidizing material. 9.2. Other information Minimum ignition energy : 10 – 25 mJ (Paraformaldehyde dust <63 microns) SECTION 10: Stability and reactivity 10.1. Reactivity No dangerous reactions known under normal conditions of use. 10.2. Chemical stability Stable under normal conditions. 10.3. Possibility of hazardous reactions No dangerous reactions known under normal conditions of use. 10.4. Conditions to avoid Heat. Incompatible materials. 10.5. Incompatible materials Sodium hydroxide. Alkalis. Acids. Amines. phenols. Oxygen. Hydrogen peroxide. Strong oxidizing agents. copper. Iron. silver salts. 10.6. Hazardous decomposition products May include, and are not limited to: oxides of carbon. Formaldehyde. SECTION 11: Toxicological information 11.1. Information on toxicological effects Acute toxicity (oral) Acute toxicity (dermal) Acute toxicity (inhalation) : Harmful if swallowed. : Not classified : Harmful if inhaled. PARAFORMALDEHYDE ATE US (oral) 718.133 mg/kg body weight ATE US (dust, mist) 1.064 mg/l/4h Paraformaldehyde (30525-89-4) LD50 oral rat 800 mg/kg 09/17/2020 EN (English US) 5/8#

Page 8PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. Paraformaldehyde (30525-89-4) LC50 inhalation rat 1070 mg/m³ (Exposure time: 4 h) Formaldehyde (50-00-0) LD50 oral rat 100 mg/kg LD50 dermal rabbit 270 mg/kg LC50 inhalation rat 0.578 mg/l/4h LC50 inhalation rat 480 ppm Methyl alcohol (67-56-1) LD50 oral rat 6200 mg/kg LD50 dermal rabbit 15840 mg/kg LC50 inhalation rat 22500 ppm (Exposure time: 8 h) Skin corrosion/irritation : Causes skin irritation. pH: 3 – 7 (10% aqueous suspension) Serious eye damage/irritation : Causes serious eye damage. pH: 3 – 7 (10% aqueous suspension) Respiratory or skin sensitization : May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. Germ cell mutagenicity : Not classified Carcinogenicity : May cause cancer. Formaldehyde (50-00-0) IARC group 1 - Carcinogenic to humans National Toxicology Program (NTP) Status Known Human Carcinogens In OSHA Hazard Communication Carcinogen list Yes In OSHA Specifically Regulated Carcinogen list Yes Reproductive toxicity STOT-single exposure : Not classified : May damage fertility or the unborn child. Formaldehyde (50-00-0) STOT-single exposure May cause damage to organs. May cause drowsiness or dizziness. May cause respiratory irritation. Methyl alcohol (67-56-1) STOT-single exposure Causes damage to organs. May cause drowsiness or dizziness. STOT-repeated exposure : Not classified Aspiration hazard : Not classified Viscosity, kinematic : No data available Symptoms/effects after inhalation Symptoms/effects after skin contact Symptoms/effects after eye contact Symptoms/effects after ingestion Chronic symptoms Other information : Harmful if inhaled. May cause irritation to the respiratory tract. May cause an allergy or asthma symptoms or breathing difficulties if inhaled. : Causes skin irritation. Symptoms may include redness, drying, defatting and cracking of the skin. May cause an allergic skin reaction. : Causes serious eye damage. Symptoms may include discomfort or pain, excess blinking and tear production, with marked redness and swelling of the conjunctiva. May cause burns. : Harmful if swallowed. May cause gastrointestinal irritation, nausea, vomiting and diarrhea. : May cause cancer. Causes damage to organs. Suspected of damaging fertility or the unborn child. : Likely routes of exposure: ingestion, inhalation, skin and eye. SECTION 12: Ecological information 12.1. Toxicity Ecology - general : May cause long-term adverse effects in the aquatic environment. Formaldehyde (50-00-0) LC50 fish 1 1.8 mg/l EC50 Daphnia 1 2 mg/l (Exposure time: 48 h - Species: Daphnia magna) 09/17/2020 EN (English US) 6/8#

Page 9PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. Formaldehyde (50-00-0) LC50 fish 2 1510 μg/l (Exposure time: 96 h - Species: Lepomis macrochirus [static]) EC50 Daphnia 2 11.3 – 18 mg/l (Exposure time: 48 h - Species: Daphnia magna [Static]) Methyl alcohol (67-56-1) LC50 fish 1 28200 mg/l (Exposure time: 96 h - Species: Pimephales promelas [flow-through]) LC50 fish 2 > 100 mg/l (Exposure time: 96 h - Species: Pimephales promelas [static]) 12.2. Persistence and degradability PARAFORMALDEHYDE Persistence and degradability Not established. 12.3. Bioaccumulative potential PARAFORMALDEHYDE Bioaccumulative potential Not established. Formaldehyde (50-00-0) Partition coefficient n-octanol/water 0.35 (at 25 °C) Methyl alcohol (67-56-1) BCF fish 1 < 10 Partition coefficient n-octanol/water -0.77 12.4. Mobility in soil No additional information available 12.5. Other adverse effects Other adverse effects : Paraformaldehyde depolymerizes very slowly in cold water forming formaldehyde solutions. Formaldehyde is easily biodegradable in sufficiently diluted concentrations. Concentrations ranging from 50 to 200 mg/l in water are fatal for superior aquatic life (guppies). Concentrations ranging from 1 to 2 mg/l prevent bacteria, algae and other microorganisms from growing (E. coli, Scenedesmus). Other information : No other effects known. SECTION 13: Disposal considerations 13.1. Disposal methods Product/Packaging disposal recommendations : Clean with water. Recover and recycle product if possible. If recovery and recycling are not possible incinerate or dispose of in accordance with local regulations. SECTION 14: Transport information Department of Transportation (DOT) In accordance with DOT Not regulated SECTION 15: Regulatory information 15.1. US Federal regulations All components of this product are listed, or excluded from listing, on the United States Environmental Protection Agency Toxic Substances Control Act (TSCA) inventory 15.2. International regulations No additional information available 15.3. US State regulations WARNING: This product can expose you to Formaldehyde, which is known to the State of California to cause cancer, and Methyl alcohol, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. SECTION 16: Other information Issue date : 09/17/2020 Revision 2 date : 09/17/2020 SDS format update 09/17/2020 EN (English US) 7/8#

Page 10PARAFORMALDEHYDE Safety Data Sheet according to the Hazard Communication Standard (CFR29 1910.1200) HazCom 2012. Other information : None. Prepared by : Nexreg Compliance Inc. www.Nexreg.com SDS US (GHS HazCom 2012)_NEXREG_NEW Disclaimer: We believe the statements, technical information and recommendations contained herein are reliable, but they are given without warranty or guarantee of any kind. The information contained in this document applies to this specific material as supplied. It may not be valid for this material if it is used in combination with any other materials. It is the user’s responsibility to satisfy oneself as to the suitability and completeness of this information for the user’s own particular use. 09/17/2020 EN (English US) 8/8#