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Chemical Sampling Information (CSI)
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General Description

Synonyms: Azoic diazo component 37; para-Aminonitrobenzene; Fast red 2G base 4-Nitroaniline

OSHA IMIS Code Number: 1865

Chemical Abstracts Service (CAS) Registry Number: 100-01-6

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: BY7000000; 8402

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1661 Poison

Chemical Description and Physical Properties:

yellow crystals with a pungent, faint ammonia-like odor
molecular weight: 138
vapor pressure: <1 mm
boiling point: 630°F
melting point: 293°F

Incompatibilities: Strong oxidizers and reducers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 1 ppm, 6 mg/m3 (Skin)

Construction Industry: 1 ppm, 6 mg/m3 TWA (Skin)

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 3 mg/m3 TWA (Skin); Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 3 mg/m3 TWA (Skin)

Health Factors

Carcinogenic Classification:

National Toxicology Program (NTP): Evidence of Carcinogenicity (Gavage Study); Technical Report #418; + May 1993

Potential Symptoms: Cyanosis; ataxia; tachycardia; tachypnea, dyspnea; irritability; vomiting, diarrhea; convulsions; respiratory arrest; anemia, methemoglobinemia

Health Effects: Methemoglobinemia (HE13); Chronic Cumulative liver damage (HE3)

Affected Organs: Blood, heart, lungs, liver

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    analytical solvent: Isopropanol
    maximum volume:
    90 Liters
    maximum flow rate: 1.5 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV/VIS
    method reference: 1 (NIOSH 5033 [17 KB PDF, 3 pages])
    method classification: Fully Validated

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