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Chemical Sampling Information (CSI)
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General Description

Synonyms: o-chloropyridine; alpha-chloropyridine

OSHA IMIS Code Number: C740

Chemical Abstracts Service (CAS) Registry Number: 109-09-1

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2822 153

Chemical Description and Physical Properties:

colorless to pale yellow liquid
molecular weight: 113.55
vapor pressure: 2.77 mm Hg @ 25°C
molecular formula: C5H4CIN
boiling point: 167-170°C (760 mm Hg)
melting point: -46°C
flash point: 26°C closed cup

Incompatibilities: Oxidizing agents, ignition sources, excess heat

Health Factors

Potential Symptoms: May be fatal if absorbed through the skin; may cause severe irritation of skin; may cause irritation of eyes, digestive tract, and respiratory tract

Health Effects: Potential Irritation-Eye, Nose, Throat, Bronchi, Lungs---Moderate (HE15)

Affected Organs: Eyes, respiratory system, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: XAD-7 tubes (50/100 mg)
    analytical solvent: 95:5 methylene chloride:N,N-dimethylformamide
    maximum volume: 24 Liters
    maximum flow rate: 0.1 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: OSHA In-House File
    method classification: Study

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