Carbon black — workplace exposure limit

What is the pel (mg/m³) for Carbon black — workplace exposure limit?

For Carbon black, pel (mg/m³) is 3.5; cas no. is 1333-86-4, verified against its source on 2026-08-05.

Carbon black | 1333-86-4 | - | 3.5 | - |

— osha.gov, retrieved 2026-08-05

Verified2026-08-05

Review by2027-08-05

1333864 | | Carbon black | -- | 3.5

— dir.ca.gov, retrieved 2026-08-05

NIOSH REL TWA 3.5 mg/m3 Ca TWA 0.1 mg PAHs/m3 [Carbon black in presence of polycyclic aromatic hydrocarbons (PAHs)]

— cdc.gov, retrieved 2026-09-08

osha.govhttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1000TableZ1
dir.ca.govhttps://www.dir.ca.gov/title8/5155.html
cdc.govhttps://www.cdc.gov/niosh/npg/npgd0102.html

Last verified against source: 2026-08-05. Due for re-check by 2027-08-05. This page as Markdown · OKF bundle · full dataset as JSON.