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Chemical Sampling Information (CSI)
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General Description

Synonyms: 2-Chloro-1-(2,4,5-Trichlorophenyl)vinyl dimethyl phosphate; Stirophos; Tetrachlorvinphos; Stirofus

OSHA IMIS Code Number: 2234

Chemical Abstracts Service (CAS) Registry Number: 961-11-5

Other Chemical Abstracts Service (CAS) Registry Numbers: 22248-79-9

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TB9100000; 58745

Chemical Description and Physical Properties:

off-white crystalline solid
vapor pressure: 4.2 x 10-8 mm
melting point: 94-97°C

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans (Tetrachlorvinphos)

Health Effects: LD50 (oral rat) 1100 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: OSHA Versatile Sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg sections, 20/60 mesh) with Glass Fiber filter enclosed
    maximum volume: 480 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/ECD
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated
    note: OSHA personnel may obtain sampling tubes from the Salt Lake Technical Center.

Conditions: Toluene extraction; 5% OV-1; Oven T 220°C; Inj T 250°C; Det T 300°C; Retention time, 1 min; DL 5 ug/sample; C/P WEB

Wipe Sampling Method:

  • sampling media: Glass Fiber Filter

Bulk Method:

  • Limit the amount of bulk submitted to one gram or one mL.

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