| Chemical Abstract Number (CAS #) |
107200
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| Synonyms | Chloroacetaldehyde |
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Acetaldehyde, chloro- | 2-Chloro-1-ethanal |
| Analytical Method |
EPA Method 8010B |
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| Molecular Formula | C2H3ClO |
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| Use | CHEM INT
IN MFR OF 2-AMINOTHIAZOLE; TO FACILITATE BARK REMOVAL FROM TREE
TRUNKS
FUNGICIDE
Control of algae, bacteria, and fungi in water
Used as a spinning solution of poly B-alanine.
Used in dentistry
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| Apparent Color | CLEAR, COLORLESS LIQUID
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| Odor | ACRID, PENETRATING ODOR
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| Boiling Point | 85-86 DEG C AT 760 MM HG
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| Melting Point | -16.3 deg C
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| Molecular Weight | 78.50
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| Density | 1.19
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| Odor Threshold Concentration | Odor threshold: 3.0 mg/cu m
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| Sensitivity Data | CHLOROACETALDEHYDE PRESENTS A SERIOUS HAZARD FROM
INHALATION OF ITS VAPOR, WHICH IS IRRITATING TO EYES, NOSE, & THROAT.
VAPOR CONCN WHICH PRODUCE IRRITATION ARE READILY ATTAINABLE AT
ROOM CONDITIONS.
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| Environmental Impact | Chloroacetaldehyde may be released to the environment at processing sites, during
transport, and from use as a fungicide. If released to moist soil, chloroacetaldehyde is expected to
be highly mobile and susceptible to significant leaching. If released to dry soil, this compound is
expected to volatilize fairly rapidly from soil surfaces. If released to water, volatilization should be
an important, if not the dominant, removal mechanism (half-life from a model river - 42 hours). If
released to the atmosphere, chloroacetaldehyde is expected to exist primarily in the vapor phase.
Reaction with photochemically generated hydroxyl radicals is expected to be the dominant
removal mechanism (half-life 1.7 days). This compound may be susceptible to removal from the
atmosphere by wet deposition; however, any chloroacetaldehyde removed from the atmosphere
by this mechanism has the potential to reenter the atmosphere by volatilization.
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| Environmental Fate | TERRESTRIAL FATE: If released to moist soil, chloroacetaldehyde is expected to be
highly mobile and susceptible to significant leaching. This compound is expected to volatilize
fairly rapidly from dry soil surfaces.
AQUATIC FATE: If released to water, volatilization is expected to be an important, if not the
dominant, removal mechanism. The volatilization half-life from a model river has been estimated
to be 42 hours. Chloroacetaldehyde is not expected to undergo chemical oxidation, bioaccumulate
significantly in aquatic organisms, or adsorb significantly to suspended solids or sediments in
water.
ATMOSPHERIC FATE: Based on a vapor pressure of 100 mm Hg at 20 deg C,
chloroacetaldehyde is expected to exist primarily in the vapor phase in the atmosphere(1,2,SRC).
Reaction with photochemically generated hydroxyl radicals is expected to be the dominant
removal mechanism (half-life 1.7 days). The relatively high water solubility of chloroacetaldehyde
suggests that this compound would be susceptible to removal from the atmosphere by wet
deposition; however, any chloroacetaldehyde removed from the atmosphere by this mechanism
has the potential to reenter the atmosphere by volatilization.
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