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Chemical Sampling Information (CSI)
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General Description

Synonyms: Phosphorochlorodithioic acid; diethylchlorothiophosphate; DECTP

OSHA IMIS Code Number: D240

Chemical Abstracts Service (CAS) Registry Number: 2524-04-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TD1780000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2810

Chemical Description and Physical Properties:

molecular weight: 188.62
vapor pressure: 5.1@70°C
specific gravity: 1.19
molecular formula: (C2H5O)2PSCL
boiling point: 50°C
flash point: 99°C (210°F)

Health Factors

Potential Symptoms: Toxic by skin absorption, causes irritation to eyes and respiratory tract. DECTP causes acetylcholinesterase inhibition resulting in pinpoint pupils, headache, dizziness, blurred vision, tears, salivation, sweating, muscle weakness, loss of coordination, shortness of breath, diarrhea, cramps, vomiting, and unconsciousness.

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: OVS-2 Tube
    maximum volume: 120 Liters
    maximum flow rate: 1 L/min
    method reference: 2 (OSHA In-House)
    method classification: Not Validated

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