<< Back to Chemical Sampling Information

Chemical Sampling Information (CSI)
Search (use word(s)/phrase)
Table of Contents
By Name
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

By CAS Number
Quick Links

General Description

OSHA IMIS Code Number: 1907

Chemical Abstracts Service (CAS) Registry Number: 7783-54-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: QX1925000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2451 122

Chemical Description and Physical Properties:

colorless gas with a moldy odor
molecular weight: 71
vapor pressure: >1 atm
boiling point: -200°F
melting point: -340°F

Incompatibilities: Water, oil, grease; oxidizable materials; ammonia, carbon monoxide, methane, hydrogen, hydrogen sulfide, active metals; oxides

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 10 ppm, 29 mg/m3

Construction Industry: 10 ppm, 29 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 10 ppm, 29 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 ppm TWA

Health Factors

Potential Symptoms: In animals: methemoglobinemia; anoxia, cyanosis; weakness, dizziness, headaches; liver, kidney injury

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

Affected Organs: In animals: blood

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • Field analysis. Use MIRAN 1A, 1B or 103

Secondary Laboratory Sampling/Analytical Method (SAM2):

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part #: MIRAN 1A & 1B
    range: 0.05 ppm @ 11.0 um
    class: Mfg

  • device: Instrumentation
    company: Infrared Spectrophotometer
    part#: MIRAN 103
    range: 0-20 ppm @ 11.0 um
    class: Mfg

** All Trademarks are the property of their respective owners.