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Chemical Sampling Information (CSI)
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General Description

Synonyms: Phosphorus chloride, Phosphorus oxytrichloride, Phosphoryl chloride

OSHA IMIS Code Number: 2094

Chemical Abstracts Service (CAS) Registry Number: 10025-87-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TH4897000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1810 137

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

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 ppm, 0.63 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm TWA; 0.5 ppm STEL

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Fritted Glass Bubbler (MFGB) containing 10 mL 0.003M Na2CO3/0.0024M NaHCO3
    maximum volume: 240 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Ion Chromatography; IC
    method reference: 2 (OSHA In-house file)
    method classification: Not Validated
    note: Submit as separate sample. Analysis based on total Phosphate and reported as the compound.

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