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Chemical Sampling Information (CSI)
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General Description

Synonym: para-Dimethylaminoazobenzene

OSHA IMIS Code Number: 0929

Chemical Abstracts Service (CAS) Registry Number: 60-11-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: BX5020000; 8216

Chemical Description and Physical Properties:

yellow, crystalline leaflets
molecular weight: 225
boiling point: Sublimes
melting point: 240°F
Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: Cancer-Suspect Agent 29 CFR 1910.1015

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): Carcinogen, Use 29 CFR 1910.1015

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 2B, possibly carcinogenic to humans [116 KB PDF, 42 pages] (para-Dimethylaminoazobenzene)

National Toxicology Program (NTP): Reasonably anticipated to be a human carcinogen [142 KB PDF, 2 pages]

Potential Symptoms: Enlarged liver, hepatic and renal dysfunction; contact dermatitis; coughing, wheezing, difficulty breathing, bloody sputum, bronchial secretions; frequent urination, hematuria, dysuria; (carcinogenic)

Health Effects: Liver Cancer (HE1)

Affected Organs: Liver, skin, bladder

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm) in series with Midget impinger containing 15 mL Isopropanol
    analytical solvent: Dry Methanol or Isopropanol
    maximum volume: 60 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV
    method reference: 2 (OSHA In-house File)
    method classification: Not Validated

Conditions: Column: C18 Mobile Phase: 80:20 Methanol:Water Detector Wavelength: 259nm Detection Limit: 6 ng/inj

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter
    analytical solvent: Dry, Methanol, or Isop

Bulk Method:

  • Limit the amount of bulk submitted to one gram or one mL.

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