OSHA IMIS Code Number: B128
Chemical Abstracts Service (CAS) Registry Number: 92-87-5
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): Lowest Feasible Concentration Carcinogen
International Agency for Research on Cancer (IARC): Group 1, carcinogenic to humans [392 KB PDF, 8 pages]
National Toxicology Programs (NTP): Known to be a Human Carcinogen [169 KB PDF, 4 pages].
Primary Laboratory Sampling/Analytical Method (SLC1):
sampling media: Polytetrafluoroethylene Filter, 5 micron
maximum volume: 500 Liters
maximum flow rate: 3.0 L/min
current analytical method: High Performance Liquid Chromatography; HPLC/UL52.
method reference: 1 (NIOSH 5013 [28 KB PDF, 5 pages])
method classification: Partially Validated
note: This method does not differentiate between different dyes. Protect samples from heat and light.
Conditions: column: C18 mobile phase: 60:40 Methanol: Phosphate Buffer detection limit: Direct Blue 6 - 0.94 ug/m3,
Direct Brown 95 - 7.7 ug/m3,
Direct Black 38 - 15 ug/m3
Wipe Sampling Method:
sampling media: Glass Fiber Filter
** All Trademarks are the property of their respective owners.
- For any dye analysis, a bulk sample of the dye must be sent to the Salt Lake Technical Center. Limit the amount of bulk submitted to one gram or approx. one mL. If possible include Material Safety Data Sheet and color index number of dye.
Accessibility Assistance: Contact the OSHA Directorate of Technical Support and Emergency Management at (202) 693-2300 for assistance accessing PDF materials.