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Chemical Sampling Information (CSI)
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General Description

Synonyms: Nitrobenzol; Oil of mirbane

OSHA IMIS Code Number: 1870

Chemical Abstracts Service (CAS) Registry Number: 98-95-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DA6475000; 14069

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1662 Poison

NIOSH Pocket Guide to Chemical Hazards, Nitrobenzene: chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:

pale yellow to dark brown, oily liquid with an odor like black paste shoe polish
molecular weight: 123
vapor pressure: <1 mm
boiling point: 412°F
melting point: 41°F

Incompatibilities: Concentrated nitric acid, nitrogen tetroxide, caustic, chemically active metals like tin or zinc

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 1 ppm, 5 mg/m3 (Skin)

Construction Industry: 5 mg/m3 TWA (Skin)

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 ppm, 5 mg/m3 TWA (Skin); Appendix A3 (Confirmed Animal Carcinogen with Unknown Relevance to Humans)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1 ppm TWA (Skin)

Health Factors

Potential Symptoms: Anoxia; eye irritation; dermatitis; anemia; In animals: liver, kidney damage

Health Effects: Methemoglobinemia (HE13); Anemias (HE12); CNS effects (HE7) Hematologic (Blood) Disturbances---Anemias

Affected Organs: Blood, liver, kidneys, CVS, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Silica Gel Tube (150/75 mg sections, 20/40 mesh)
    analytical solvent: Methanol
    maximum volume: 150 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 1 (NIOSH 2005 [39 KB PDF, 5 pages])
    sampling analytical error: 0.10
    method classification: Fully Validated

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Instrumentation
    company:
    Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.9 ppm @ 11.9 um
    class: Mfg

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