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Chemical Sampling Information (CSI)
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General Description

Synonyms: O,O-Diethyl O-[p-(methylsulfinyl)phenyl]phosphorothioate; Dasanit; Bay 25141; S767; Terracur P

OSHA IMIS Code Number: 1251

Chemical Abstracts Service (CAS) Registry Number: 115-90-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TF3850000; 59407

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN3017 131 Poison, Flammable Liquid

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

Chemical Description and Physical Properties:

brown liquid
boiling point: 138-141°C at 0.01 mm Hg (1.3 Pa)

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 mg/m3 TWA

Health Factors

Health Effects: Nervous System Disturbances---Cholinesterase inhibition (HE6) LD50 (oral, rat) 5 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
    current analytical method: 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; 4 ft.; 5% OV210; Oven 210°C; Inj. 250°C; Det. 220°C; C/P TLP 7/79 or (45 m x 0.2 mm i.d.) SE-54 with 0.25 um thick film; Oven 220-260°C at 15 deg/min. Inj 250°C; Det 250°C.

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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