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Chemical Sampling Information (CSI)
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General Description

Synonyms: S-(O,O-Diisopropylphosphorodithioate) ester of N-(2-mercaptoethyl)benzenesulfonamide; Bensulide; Prefar

OSHA IMIS Code Number: B509

Chemical Abstracts Service (CAS) Registry Number: 741-58-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TE0250000; 59143

Chemical Description and Physical Properties:

used to control grasses and broad-leaf weeds in lawn; viscous amber liquid above 34.4C
molecular weight: 398
Health Factors

Health Effects: LD50 (oral, rat) 1082 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: XAD-7 Tube (100/50 mg sections, 15/50 mesh)
    maximum volume: 480 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/FPD
    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: 3% OV-1 on Chrom W 80/100 inlet: 250 detector: 250 oven temperature: 230C C/P WEB 7-83

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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