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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: 1510

Chemical Abstracts Service (CAS) Registry Number: 7440-74-6

Chemical Description and Physical Properties:

appearance and color vary depending upon specific compound

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

Construction Industry: 0.1 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 mg/m3 TWA

Health Factors

Health Effects: Cumulative lung damage (HE10); Cumulative organ damage (HE3) Suspect teratogen (InNO3)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 960 Liters
    maximum flow rate: 2.0 L/min
    minimum volume: 480 Liters
    current analytical method: Inductively Coupled Argon Plasma; ICP/DCP-AES
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

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