|Chemical Abstract Number (CAS #)||
|Synonyms||1,2-Dichloropropane||Propylene dichloride||Propane, 1,2-dichloro-
||EPA Method 502.2||EPA Method 524.2
||EPA Method 601
||EPA Method 624
||EPA Method 8010
||EPA Method 8021
||EPA Method 8260
Link to the National Library of Medicine's Hazardous Substances
Database for more details
on this compound.
|Use|| LIVESTOCK (IN DD MIXT); SOLVENT IN PLASTICS, RESINS, & METALS
INDUST, INT IN RUBBER PROCESSING
OIL & FAT SOLVENT; IN DRY CLEANING FLUIDS; IN DEGREASING, IN
INSECTICIDAL FUMIGANT MIXTURES.
INTERMEDIATE FOR PERCHLOROETHYLENE & CARBON TETRACHLORIDE; LEAD
SCAVENGER FOR ANTIKNOCK FLUIDS; SOLVENTS FOR WAXES, GUMS; SOLVENT
MIXTURES FOR CELLULOSE ESTERS & ETHERS; SCOURING CMPD; SPOTTING
AGENT; METAL DEGREASING AGENTS; SOIL FUMIGANT FOR NEMATODES
|Consumption Patterns|| (FOR AGRICULTURAL USES) 50% USED ALONE AS AN INSECTICIDE FOR
STORED GRAIN; 48% IN DD MIXTURE AS AN INSECTICIDE ON CROPS; 2% IN DD
MIXTURE AS AN INSECTICIDE FOR LIVESTOCK & IN OTHER AGRICULTURAL
APPLICATIONS (DD MIXTURE CONSISTS OF 1,3-DICHLOROPROPENE,
3,3-DICHLOROPROPENE, 1,2-DICHLOROPROPANE, 2,3-DICHLOROPROPENE, &
RELATED C3 CHLORINATED HYDROCARBONS) (1975)
|Apparent Color|| Colorless liquid
|Odor|| Chloroform-like odor ; Sweet
|Boiling Point|| 96.4 deg C; (-3.7 deg C at 10 mm Hg)
|Melting Point|| -100.4 deg C
|Molecular Weight|| 112.99
|Density|| 1.159 AT 25 DEG C/25 DEG C
|Odor Threshold Concentration|| Human subjects described the odor as "strong" at 130 to 190 ppm & "not noticeable"
at 15 to 23 ppm.
|Sensitivity Data|| Vapor is irritating to eyes, nose, & throat. Liquid is irritating to skin & eyes.
|Environmental Impact|| 1,2-Dichloropropane has been released in the past into soil during its former use as a soil
fumigant and into air as fugitive emissions and in wastewater during its production and use as a
chemical intermediate, solvent, scouring, spotting, and metal degreasing agent. If injected into soil
1,2-dichloropropane will be primarily lost by volatilization. 1,2-Dichloropropane has been
detected in groundwater where its fate is unknown. If released into water, 1,2-dichloropropane
will be lost by volatilization with half-lives ranging from approx 6 hr for a river to 10 days for a
lake. Adsorption to soil and bioconcentration in fish will not be significant. In air it will react with
photochemically generated hydroxyl radicals (half-life >23 days) and be washed out by rain.
Therefore, there will be ample time for dispersal as is evidenced by its presence in ambient air.
Human exposure is primarily due to inhalation. Occupation exposure, both dermal and via
inhalation, will occur during and after its application as a soil fumigant as well as during its
production and other uses.
|Environmental Fate|| TERRESTRIAL FATE: If released on soil 1,2-dichloropropane will rapidly volatilize and
readily leach into the ground especially in the sandy soils in areas of CA and the coastal plains of
GA, SC, NC, and VA where it is used as a nematicidal fumigant . There is no evidence that it
biodegrades in sandy soil although there is some evidence that a minor amount of degradation
occurs in medium loam soil in 20 weeks in closed glass containers . Under outdoor conditions >
99% is lost through volatilization within 10 days . During its use as a fumigant for nematodes,
1,2-dichloropropane is injected into the root zone and then the soil compacted to retain the
fumigant longer. Leaching into groundwater, is possible especially if there is rain or the fields are
irrigated as indicated by ground water contamination in agricultural areas .
AQUATIC FATE: If released into water, 1,2-dichloropropane will be lost primarily by
volatilization (half-life 5-8 hrs in a typical river to 10 days in a lake). Adsorption to sediment,
hydrolysis, and biodegradation will not be an important loss processes.
ATMOSPHERIC FATE: If released in air, 1,2-dichloropropane will degrade by reaction with
photochemically produced hydroxyl radicals (half-life >23 days). Due to its moderately high water
solubility, 2700 mg/l washout by rain should occur.
|Drinking Water Impact|| HIGHEST CONCN FOUND IN FINISHED (DRINKING) WATER WAS LESS THAN
1.0 UG/L; THERE WAS NO AVAIL INFORMATION ON CHRONIC TOXICITY. FROM
DRINKING WATER: 1,2-Dichloropropane has been identified in drinking water in the US: 11
water utilities along the Ohio River 0.1 ppb mean, 0.1 ppb max, 1.6% positive . The
Netherlands: Maximum concn in tap water derived from bank-filtered Rhine River water 300
parts per trillion . US Groundwater Supply Survey (945 supplies derived from groundwater
chosen both randomly and on the basis that they may contain VOC's)- 13 samples positive,
median of positive samples, 0.9 ppb, maximum 21 ppb .
GROUNDWATER: Found in 3 MD wells, 30 Long Island, NY wells, and over 60 CA wells at
levels ranging from 1-50 ppb . Minnesota: Found in groundwater under 8 of 13 municipal
landfills with suspected groundwater contamination - 0.5-43 ppb and 1 of 7 other municipal
landfills - 1.1 ppb . 1,2-Dichloropropane is the second most frequent groundwater pesticidal
contaminant in California . It has been detected in 75 wells at concns ranging up to 1200 ppb in
9 countries . Not detected in groundwater underlying the Amphenol metal plating facility in
Broadview, IL at a detection limit of 1 ppb . Detected in groundwater 83 days after application
with 92%, 1,3-dichloropropene . Identified in groundwater under a leaky storage tank of a paint
SURFACE WATER: Lake Ontario (95 stations) 4 stations have concentrations ranging from