{"operation":"document","citation":"14-0081","title":"Atotech USA Inc. — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2014-08-11","effective_on":null,"summary":"14-0081 response to Atotech USA Inc. concerning 173.132, 173.136, 173.22.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0081.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0081.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0081","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2014/140081.pdf","body":"<<<PAGE 1>>>\n\nof Transportation\nU.S. Department\n1200 New Jersey Avenue, SE\nWashington, D.C. 20590\nMaterials Safety\nPipeline and Hazardous\nAdministration\nAUG 1 1 2014\nPatricia Siefferman, Ph.D.\nProduct Safety Specialist\nAtotech USA Inc.\nAmericas Headquarters\n1750 Overview Drive\nRock Hill, SC 29730\nRef. No. 14-0081\nDear Dr. Siefferman:\nThis responds to your April 2, 2014 request for clarification on the classification of corrosive\nand toxic materials under the Hazardous Materials Regulations (HMR; 49 CFR parts 171-\n180). Specifically, you seek clarification on the applicable classification of a chromium\ntrioxide mixture with up to 50% chromium trioxide.\nYou indicate that testing of the material shows that it has an oral or dermal toxicity that meets\nthe definition of a Division 6.1 (toxic) material specified in § 173.132. You state that\nconversations with PHMSA representatives affirmed that mixtures with a high chrome\ncontent may be classified as \"Chromic acid solution, 8 (6.1), UN1755\" or \"Corrosive liquid,\ntoxic, n.o.s., (chromium trioxide), 8 (6.1), UN 2922.\" You also indicate that you seek to\nharmonize with the European Agreement Concerning the International Carriage of Dangerous\nGoods by Road (ADR).\nThe HIMR authorizes the proper shipping description of \"UN 1755, Chromic acid solution, 8,\"\nnot \"UN 1755, Chromic acid solution, 8 (6.1).\" In accordance with § 173.22, it is the\nshipper's responsibility to properly class and describe a hazardous material. This Office does\nnot generally perform that function. However, you indicate that you seek to harmonize with\nthe ADR. The listing in the 2013 edition of the ADR for \"UN 1755, Chromic acid solution, 8,\nPGII\" describes the material as aqueous solution, with not more than 30% chromic acid and\ndoes not include the subsidiary Division 6.1 risk. Therefore, provided your material meets the\ndefinitions for corrosive (see § 173.136) and toxic (see § 173.132) materials, it is our opinion\nthat \"UN2922, Corrosive liquid, toxic, n.o.s. (chromium trioxide), 8 (6.1), PGIl\", is the most\nappropriate description for your material and will not conflict with the ADR.\nI hope this answers your inquiry. If you need additional assistance, please contact this office\nat 202-366-8553.\nSincerely,\nThat Shut\nRobert Benedict\nChief, Standards Development Branch\nStandards and Rulemaking Division\n\n<<<PAGE 2>>>\n\nBoothe\n3172.101\nATOTECH\nAtotech USA Inc.\n$172.402 (a)e)\nAmericas Headquarters\n1750 Overview Drive\nRock Hill, SC 29730\nLave bar\nTel: (803) 817-3681 - Fax: (803) 817-3627\nEmail: Patricia. siefferman@atotech.com\nApril 2, 2014\nMr. Charles E. Betts\nU.S. DOT/PHMSA (PHH-1.0)\nDirector, Standards and Rulemaking Division\nOffice of Hazardous Materials Standards\n1200 New Jersey Ave, SE. East Building, 2nd Floor\nWashington, D.C. 20590\nDear Mr. Betts:\nThis is to request clarification of the provisions of Hazardous Materials Regulations (HMR; 49 CFR Part\n50%). Specifically, we seek clarification for when and how the Toxic subsidiary hazard class 6.1 is to be\n172.402(a)(2)) as it may apply to mixtures containing a high percentage of chromium trioxide (as much as\nused in classification.\nThe Hazardous Materials Table (§ 172.101) lists the proper shipping name Chromic Acid Solution, 8,\nUN1755 with no subsidiary hazard. However, during the course of DOT certification training, several\ntrainers have recommended the use of Corrosive liquid, toxic, n.o.s. (chromium trioxide), 8(6.1), UN2922,\ntransport. Additionally, some colleagues use the aforementioned § 172.402(a) to add Toxic subsidiary\nPGII, stating that it more accurately conveys the hazardous characteristics of the product offered for\nlabeled with subsidiary hazards according to the table in that paragraph. The table indicates Subsidiary\nclass 6.1 to the Chromic Acid Solution shipping name as the paragraph states the package should be\nmodes of transport. From recent conversations with your office, it was affirmed that mixtures with high\nClass 6.1 is to be added for all packing groups (I, II, and III), and it further notes that it is required for all\nchrome content may be classified as Chromic Acid Solution, 8(6.1), UN1755 or UN2922, 8(6.1).\nFor the purpose of classifying and assigning packing groups to mixtures which possess oral or dermal\ntoxicity hazards, we use DOT's formula at § 173.132(c)(3) to determine the acute LD50 of mixtures. Using\na chrome LDso oral rat of 50 mg/kg (Source: [IUCLID] International Uniform Chemical Information\nDatabase), and finding that our high chrome mixtures exceed DOT's toxic threshold of ≤ 300 mg/kg, we\nclassified these products as UN2922, 8(6.1) or UN1755, 8(6.1).\nHowever, our affiliates have interpreted the ADR (Agreement concerning International Carriage of\nthe labeling of our products if possible. Therefore, we seek an interpretation and clarification of the\nDangerous Goods by Road) to require UN1755, with no subsidiary class allowed. We seek to harmonize\nclassification of chrome mixtures that exceed DOT's toxic threshold:\n:\nChromic acid solution, 8(6.1), UN1755, PGII\nChromic acid solution, 8, UN1755, PGII\n• Corrosive liquid, Toxic, n.o.s., (Chromium trioxide), 8(6.1), UN2922, PGII\nThank you in advance for your assistance.\nKindest Regards,\nPatricia Sufferman\nProduct Safety Specialist\nPatricia Siefferman, Ph.D.","truncated":false,"body_characters":5301}