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Chemical Sampling Information (CSI)
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General Description

Synonyms: 4,4'-Thiobis(2-(1,1-Dimethylethyl)-5-Methyl-Phenol; Santox; Bis(4-Hydroxy-5-tert-Butyl-2-Methylphenyl) Sulfide; Santonox

OSHA IMIS Code Number: 2422

Chemical Abstracts Service (CAS) Registry Number: 96-69-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GP3150000; 27419

Chemical Description and Physical Properties:

solid
Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 10 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 mg/m3 TWA Total Dust, 5 mg/m3 TWA Respirable Dust

Health Factors

Health Effects: Apparent low toxicity (HE19)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Glass Fiber Filter (37 mm)
    maximum volume: 100 Liters
    maximum flow rate: 1.7 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UV
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

Conditions:

  • column: C18
    mobile phase: 90:10:0.1 Methanol:Water:H3PO4
    detector wavelength: 280
    detection limit: 0.5 ug/mL
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