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Chemical Sampling Information (CSI)
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General Description

Synonyms: Methylsulfonic acid

OSHA IMIS Code Number: M225

Chemical Abstracts Service (CAS) Registry Number: 75-75-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: PB1140000

Chemical Description and Physical Properties:

molecular weight: 96.10
molecular formula: CH4O3S
boiling point: 167°C
melting point: 20°C

Health Factors

Potential Symptoms: Burns eye, skin, and mucous membranes

Health Effects: Irritation - Eye, skin, and mucous membranes

Affected Organs: Respiratory system, eyes, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Charcoal tube (100/50 mg sections, 20/40 mesh)
    analytical solvent: 0.01 N NaOH
    current analytical method: Ion Chromatography; IC or Gas Chromatography; GC/FID
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

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