| Chemical Abstract Number (CAS #) |
598312
|
|---|
| Synonyms | Bromoacetone |
|---|
2-Propanone, 1-bromo- |
| Analytical Methods |
EPA Method 8010B |
|---|
EPA Method 8240B |
EPA Method 8260A |
| Molecular Formula | C3H5BrO |
|---|
| Use | CHEMICAL WAR GAS (FORMER USE)
ORGANIC SYNTHESIS; TEAR GAS
|
|---|
| Apparent Color | COLORLESS LIQUID; RAPIDLY BECOMES VIOLET EVEN IN ABSENCE OF AIR
|
|---|
| Odor | PUNGENT ODOR
|
|---|
| Boiling Point | 137 deg C; 63.5-64 deg C at 50 mm Hg
|
|---|
| Melting Point | -36.5 DEG C
|
|---|
| Molecular Weight | 136.99
|
|---|
| Density | 1.634 @ 23 DEG C
|
|---|
| Sensitivity Data | POISONOUS & INTENSELY IRRITATING TO SKIN & MUCOUS MEMBRANES.
|
|---|
| Environmental Impact | Bromoacetone occurs naturally in the essential oil of a seaweed species that grows in the
ocean around the Hawaiian Islands. If released to the atmosphere, it will degrade via reaction with
photochemically produced hydroxyl radicals (estimated half-life of 53 days in an average
atmosphere), although degradation via photolysis may be more rapid. Physical removal from air
by rainfall is possible. If released to water, photolysis may be an important degradation process.
Volatilization from water is not rapid, but may be important in the absence of significant
degradation processes. If bromoacetone is spilled into a body of water, it will sink to the bottom
of the water column, dissolve slowly and turn violet rapidly. If released to soil, significant leaching
may be possible. Evaporation from dry surfaces is likely to occur. The potential significance of
biodegradation in soil or water is not known. Exposure of bromoacetone can occur through
consumption of specific seaweeds found in the region of the Hawaiian Islands. With the exception
of this specific exposure, there is no evidence that the general population is exposed to
bromoacetone.
|
|---|
| Environmental Fate | TERRESTRIAL FATE: Estimated Koc values (<50) indicate that bromoacetone is highly
mobile in soil and susceptible to significant leaching. Photolysis may occur on soil surfaces
exposed to sunlight. Bromoacetone's vapor pressure of 9.0 mm Hg at 20 deg C indicates that
evaporation from dry surfaces is likely to occur. The potential significance of biological or
chemical degradation processes in soil are not known.
AQUATIC FATE: Although kinetic rate data are not available, photolysis may be an important
degradation process for bromoacetone in sunlit water. Volatilization from water is not rapid
(estimated half-lives of 3.7 days from a shallow model river 1 m deep and 40 days from an
environmental pond), but may be important in the absence of significant degradation processes.
Aquatic bioconcentration and adsorption to sediment are not expected to be important. The
potential significance of biodegradation or chemical hydrolysis are not known. If bromoacetone is
spilled into a body of water, it will sink to the bottom of the water column, dissolve slowly and
turn violet rapidly(1,SRC).
ATMOSPHERIC FATE: Based on a vapor-pressure of 9.0 mm Hg at 20 deg C , bromoacetone
is expected to exist almost entirely in the vapor-phase in the ambient atmosphere(1,2,SRC).
Vapor-phase bromoacetone is degraded in the atmosphere by reaction with photochemically
produced hydroxyl radicals (estimated half-life of 53 days in an average atmosphere). Although
kinetic rate data are not available, direct photolysis may degrade bromoacetone much more
rapidly than reaction via hydroxyl radicals. Its relatively high water solubility suggests that
physical removal via wet deposition is likely.
|
|---|
