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Chloroacetaldehyde

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Chloroacetaldehyde Basic information

Product Name:
Chloroacetaldehyde
CAS:
107-20-0
MF:
C2H3ClO
MW:
78.5
EINECS:
203-472-8
Mol File:
107-20-0.mol
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Chloroacetaldehyde Chemical Properties

Melting point:
-28--23°C
Boiling point:
80-100 °C(lit.)
Density 
1.236 g/mL at 25 °C
vapor pressure 
100 at 20 °C (NIOSH, 1997)
refractive index 
n20/D 1.407
Flash point:
128 °F
solubility 
Soluble in ether (Weast, 1986), acetone, and methanol (Hawley, 1981)
Water Solubility 
soluble in acetone, methanol. Fully miscible in water.
Sensitive 
Air Sensitive
Merck 
2109
BRN 
1071226
Exposure limits
Ceiling 3 mg/m3 (1 ppm) (ACGIH); IDLH.
CAS DataBase Reference
107-20-0(CAS DataBase Reference)
NIST Chemistry Reference
Acetaldehyde, chloro-(107-20-0)
EPA Substance Registry System
Chloroacetaldehyde (107-20-0)
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Safety Information

Hazard Codes 
T+,N
Risk Statements 
24/25-26-34-40-50-35
Safety Statements 
26-28-36/37/39-45-61
RIDADR 
UN 2232 6.1/PG 1
WGK Germany 
-
RTECS 
AB2450000
TSCA 
Yes
HazardClass 
6.1(a)
PackingGroup 
I
HS Code 
29130000
Hazardous Substances Data
107-20-0(Hazardous Substances Data)
Toxicity
Acute oral LD50 for rats 75 mg/kg, mice 69 mg/kg (quoted, RTECS, 1985).

MSDS

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Chloroacetaldehyde Usage And Synthesis

Chemical Properties

Colorless transparent liquid

Chemical Properties

Chloroacetaldehyde is a combustible, colorless liquid with a very sharp, irritating odor.

Physical properties

Clear, colorless liquid with an irritating, acrid odor

Uses

Chloroacetaldehyde is used in the productionof 2-aminothiazole.

Uses

Intermediate, fungicide.

Definition

ChEBI: Acetaldehyde substituted at C-2 by chlorine.

General Description

A clear colorless liquid with a pungent odor. Flash point about 190°F. Corrosive to skin and mucous membranes. Chloroacetaldehyde is very toxic by inhalation.

Air & Water Reactions

Soluble in water. Forms an insoluble hemihydrate at greater than 50% concentration.

Reactivity Profile

Chloroacetaldehyde polymerizes on standing. At greater than 50% concentration in water, Chloroacetaldehyde forms an insoluble hemihydrate. Sensitive to heat. Reacts with oxidizing agents. Incompatible with acids and water . Burns to give poisonous and irritating gases.

Hazard

Corrosive to skin and mucous membranes. TLV: ceiling 1 ppm.

Health Hazard

Chloroacetaldehyde is a highly toxic andcorrosive compound that can injure the eyes,skin, and respiratory system. Exposure toits vapor at high concentrations can producesevere irritation and impair vision. At lowconcentrations, the vapor can cause irritationand sore eyelids. Brief contact with 40%aqueous solution can result in skin burn anddestruction of tissues. A 0.5% dilute solutioncan still be irritating on skin.
Inhalation of its vapor at the 5-ppm levelcan irritate the eyes, nose, and throat. Ingestionmay result in pulmonary edema. Swallowinga concentrated solution may be fatal.The acute toxicity data are as follows:
LD50 value, intraperitoneal (rats): 2 mg/kg
LD50 value, oral (rats): 23 mg/kg
LD50 value, skin (rabbits): 67 mg/kg
This compound is a mutagen, testing positivein the Ames test.

Health Hazard

Poisonous; may be fatal if inhaled, swallowed or absorbed through the skin. Overexposure causes intense irritation and edema of the eyes, mucous membranes, respiratory tract, and skin. Prolonged exposure causes tissue destruction, chemical burns and residual scarring. The eyes may experience permanent damage.

Fire Hazard

Combustible; flash point (closed cup) 87.8°C (190°F); flash point of 50% aqueous solution 53°C (128°F) (at this concentration it may form insoluble hemihydrate); it forms an explosive mixture with air. Reactions with strong acids and oxidizers are exothermic.

Safety Profile

Suspected carcinogen. Poison by ingestion, skin contact, and intraperitoneal routes. Mutation data reported. Combustible when exposed to heat or flame. Reacts with oxidizing materials. To fight fire, use water, foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Cl-. See also ALDEHYDES and CHLORIDES.

Potential Exposure

Chloroacetaldehyde is used as a fungicide; as an intermediate in 2-aminothiazole manufacture; and in bark removal from tree trunks.

Environmental Fate

Chemical/Physical. Polymerizes on standing (Windholz et al., 1983).

Shipping

UN22322-Chloroethanal, Hazard class: 6.1; Labels: 6.1-Poison Inhalation Hazard, Inhalation Hazard Zone B.

Incompatibilities

Heat and water sensitive; concentrations of .50% form insoluble hemihydrate material on contact with water. Reacts with oxidizers, acids. On heating,chloroacetaldehyde releases chlorine fumes. Polymerizable upon standing

Waste Disposal

Incineration, preferably after mixing with another combustible fuel; care must be exercised to assure complete combustion to prevent the formation of phosgene; an acid scrubber is necessary to remove the halo acids produced.

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