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Chemical Sampling Information (CSI)
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General Description

Synonyms: 4-Methylbenzenesulfonic Acid; Tosic acid

OSHA IMIS Code Number: T176

Chemical Abstracts Service (CAS) Registry Number: 104-15-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: XT7350650; 83137; XT7350700; 83138

Chemical Description and Physical Properties:

colorless leaflets
molecular weight: 172.20
melting point: 107°C
Health Factors

Health Effects: Moderately toxic skin irritant

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Midget Impinger containing 10 mL Distilled water
    maximum volume: 120 Liters   
    maximum flow rate:     1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UL51
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

    sampling media: Glass Fiber Filter (37 mm)
    analytical solvent: 0.0147 N H3PO4
    maximum volume: 100 Liters   
    maximum flow rate:     1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/UL50
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

    sampling media: GLASS Fiber Filter (13 mm)
    analytical solvent: 2% Isopropanol in water V/L50  
    minimum volume:     10 Liters   
    maximum flow rate:     1 to 3 L/min
    maximum volume: 1000 Liters
    current analytical method: High Performance Liquid Chromatography; HPLC/UL52
    method reference: 1 (NIOSH 5043) [27 KB PDF, 4 pages]
    method classification: Partially Validated
Conditions: C18 column; 40% methanol 60% water, PIC A; 1 mL/min; UV Det: 229; Retention time, 8 min; DL 0.23 ug/mL; C/P DBA

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Page last updated: 05/05/2000

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