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Chemical Sampling Information (CSI)
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General Description

Synonyms: Bay 15203: Bayer 21/116; Demeton-o-methyl + Demeton-S-methyl; Metasystox; Methyl mercaptophos; Methyl systox

OSHA IMIS Code Number: 1768

Chemical Abstracts Service (CAS) Registry Number: 8022-00-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TG1760000; 59544

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

Chemical Description and Physical Properties:

solid

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.5 mg/m3 TWA (Skin)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.5 mg/m3 TWA (Skin)

Health Factors

Health Effects: Cholinesterase inhibition (HE6)

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

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