CAS 1333-86-4 · TSCA · United States of America

Carbon black under TSCA

C (amorphous) · 炭黑

Status: Listed. Carbon black is on the TSCA Inventory and currently listed as TSCA Active. **Federal OSHA PEL column at 29 CFR 1910.1000 Table Z-1 is blank for carbon black (CAS 1333-86-4); the operative 3.5 mg/m3 8-hr TWA is Cal/OSHA PEL plus NIOSH REL, NOT a federal OSHA PEL (verify against https://www.osha.gov/annotated-pels before relying); NIOSH adds a carbon-black-with-PAHs cap of 0.1 mg/m3 cyclohexane-extractable measured at the same point (verify against cdc.gov/niosh).** NOT on EPA RMP threshold list. NOT on DEA scheduling. **California Proposition 65 carcinogen listed effective 21 February 2003 (carbon black, airborne, unbound particles of respirable size; verify against OEHHA https://oehha.ca.gov/proposition-65/proposition-65-list before relying)**. **NO active US AD/CVD case on Chinese-origin carbon black currently** (verify against https://access.trade.gov/ before invoicing); however, **the US has had multiple historical AD reviews on Chinese-origin tires (passenger car tires + truck and bus tires + off-road tires); carbon black is captive-feedstock to tire production so duty exposure flows downstream**. Section 301 List 3 25% additional duty applies on Chinese-origin carbon black (HS 280300) (verify against current USTR Section 301 schedule before invoicing). IARC Group 2B (verify against monographs.iarc.who.int Volume 93 before relying). Major US domestic producers (verify each company-site pair against the producer's public website before relying): Cabot Corporation Boston Massachusetts headquarters with multiple US plants (Franklin Louisiana + Pampa Texas + Big Spring Texas), Birla Carbon (Aditya Birla Group) Marietta Georgia headquarters with multiple US plants (Ulysses Kansas + Belpre Ohio + Marshall Texas), Orion Engineered Carbons Houston Texas headquarters (formerly Evonik Carbon Black) with multiple US plants, Continental Carbon Houston Texas with Sunray Texas plus Phenix City Alabama plus Ponca City Oklahoma operations.

US carbon black lane: **Cal/OSHA PEL 3.5 mg/m3 + NIOSH REL 3.5 mg/m3 + NIOSH carbon-black-with-PAHs cap 0.1 mg/m3 (no federal OSHA Table Z-1 entry) + Cal Prop 65 carcinogen 21 February 2003 + IARC Group 2B Volume 93 + Section 301 List 3 + downstream tire AD/CVD exposure**. **Cal Prop 65 listing triggers warning-label obligations on California-bound finished goods containing airborne respirable carbon black**. NO active US AD/CVD case on carbon black itself. Major US producers: Cabot (Boston HQ + multiple plants), Birla Carbon / Aditya Birla Group (Marietta GA HQ + multiple plants), Orion Engineered Carbons (Houston TX HQ), Continental Carbon (Houston TX HQ + multiple plants).