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Chemical Sampling Information (CSI)
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General Description

Synonyms: Coumaphos; O,O-Diethyl O-(3-chloro-4-methyl-2-oxo(2H)-1- benzopyran-7-yl)phosphorothioate; Diolice; Meldane; Muscatox; Resistox; Asuntol; Bay 21/199; Bazmix; Umbethion

OSHA IMIS Code Number: 0736

Chemical Abstracts Service (CAS) Registry Number: 56-72-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GN6300000; 27163

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: NA2783 Poison

Chemical Description and Physical Properties:

tan crystalline solid; used in controlling livestock insects
molecular weight: 363
melting point: 90°-92°C

Health Factors

Health Effects: A cholinesterase inhibitor; LD50 (oral, rat) 56-230 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
    analytical solvent: Toluene
    maximum volume: 480 Liters
    maximum flow rate: 1.0 L/min
    analytical 1: Gas Chromatography; GC/FPD
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated
    note: OSHA personnel may obtain sampling tubes from the Salt Lake Technical Center.

Conditions: Toluene extraction; Capillary column SE-54 (45 m x 0.2 mm i.d.) with 0.25 um film thickness; column temp 160 C: Inlet 250 C; FPD detector 250 C; DL 0.035 ng/inj; Retention time 26 min

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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