Agent Name

Chloroacetaldehyde

Alternative Name

2-Chloroethanal

CAS Number

107-20-0

Formula

C2-H3-Cl-O

Major Category

Toxic Gases & Vapors

Synonyms

2-Chloro-1-ethanal; 2-Chloroacetaldehyde; 2-Chloroethanal; Acetaldehyde, chloro-; Chloroacetaldehyde; Chloroacetaldehyde monomer; Chloroaldehyde; Chloroethanal; Monochloroacetaldehyde; [ChemIDplus] UN2232

Category

Other Toxic Gases & Vapors

Description

Colorless liquid with an acrid, penetrating odo; Note: Typically found as a 40% aqueous solution; [NIOSH]

Sources/Uses

Used to manufacture other organic chemicals; also used as a fungicide and debarking agent; [ACGIH]

Comments

Liquid causes second or third degree burns after short contact; [CHRIS] Exposed subjects complain of mucous membrane irritation, tearing, coughing, and choking; [ACGIH] Can cause pulmonary edema after heavy inhalation exposure; [ICSC]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TIH

Yes

Ceiling (ACGIH)

1 ppm

PEL (OSHA)

Ceiling(OSHA) = 1 ppm

IDLH (NIOSH)

45 ppm

Excerpts from Documentation for IDLHs

Human data: Volunteers found 45 ppm to be very disagreeable and conjunctival irritation was observed [Dow 1962].

Vapor Pressure

64.3 mm Hg

Lethal Concentration

LC50 (rat) = 650 mg/m3/1H

Explanatory Notes

Flash point = 87 deg C;

Reference Link

ICSC: Chloroacetaldehyde (40% solution)

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: