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Chemical Sampling Information (CSI)
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General Description

Synonyms: Benzenecarbonyl Chloride; alpha-Chlorobenzaldehyde; Benzoic Acid, Chloride

OSHA IMIS Code Number: B507

Chemical Abstracts Service (CAS) Registry Number: 98-88-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DM6600000; 19434

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: UN1736 137 Corrosive Material

Chemical Description and Physical Properties:

liquid, decomposed by water and alcohol
molecular weight: 140.57
molecular formula: C7H5ClO
density: 1.2070
Exposure Limits

American Conference of Governmental Industrial Hygenists (ACGIH) Threshold Limit Value (TLV): 0.5 ppm, 2.8 mg/m3 Ceiling; Appendix A4 (Not Classifiable as a Human Carcinogen) AIHA_WEEL 1 ppm STEL

Health Factors

Carcinogenic Classification:

International Agency for Research on Cancer (IARC): Group 3, not classifiable as to its carcinogenicity to humans

Health Effects: Chronic (Cumulative) Toxicity---Suspect Carcinogen or mutagen Acute Toxicity---short-term high hazard effects Respiratory Effects---Acute lung damage/edema LD50 (oral, rat) 7710 mg/kg

Skin Irritation: Primary irritant and sensitizer

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Midget Impinger containing 15 mL Xylene
    analytical solvent: Xylene
    maximum volume: 90 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/ECD
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

Articles: Hendershott, James P. "Am. Ind. Hyg. Assoc. J." 1986, 47(12) 742-746 ....Title: The Simultaneous Determination of Chloroformates and Phosgene at Low Concentrations in Air Using a Solid Sorbent Sampling - Gas Chromatographic Procedure. ...Collection: 350 mg XAD-2 coated with di-n-butylamine (explained in article) Since they say it can be used for phosgene possibly the HMP coated XAD-2 would work. ...Flowrate: 50 mL/min Volume 24 Liters Desorb with 2mL of Hexane, remove as much as possible from resin, add 1mL of 1N HCL. ...Analysis: GC/FID nothing special ...Keywords: Acid Chlorides; Chlorothioformates

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