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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 1900

Chemical Abstracts Service (CAS) Registry Number: 7727-37-9

Chemical Description and Physical Properties:
gas
Exposure Limits

OSHA Permissible Exposure Limit (PEL):
Construction Industry: Simple Asphyxiant (Note 3)
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): Simple asphyxiant

Health Factors

Health Effects: Simple Asphyxiation (HE17) If Oxygen is 18% by volume

NIOSH/OSHA/DOE Health Guideline: Nitrogen

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
Field analysis. Measure % oxygen with oxygen meter.
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