| 别名 |
1,1,1,2-Tetrachloroethane |
| Ethane, 1,1,1,2-tetrachloro- |
| 分析方法 |
EPA Method 502.2 |
| EPA Method 524.1 |
| EPA Method 524.2 |
| EPA Method 8010B |
| EPA Method 8021A |
| EPA Method 8240B |
| EPA Method 8260A |
| 分子式 |
C2H2Cl4 |
| 用途 |
AS SOLVENT; MFR OF INSECTICIDES, HERBICIDES,
SOIL FUMIGANTS, BLEACHES, PAINTS & VARNISHES
LABORATORY REAGENT; CHEM INT FOR CHLOROCARBON SOLVENTS (NON-USA
USE) 1,1,1,2-Tetrachloroethane is used as a feedstock for
the production of solvents such as trichloroethylene
and tetrachloroethylene |
| 外观颜色 |
YELLOWISH RED |
| 沸点 |
130.5 DEG C @ 760 MM HG |
| 熔点 |
-70.2 DEG C |
| 分子量 |
167.85 |
| 密度 |
1.54064 @ 20 DEG C/4 DEG C |
| 环境影响 |
It does not appear that
1,1,1,2-tetrachloroethane is presently produced in the USA or is
used commercially. It may, however be formed incidentally
during the manufacture of other chlorinated ethanes
and released into the environment as air emissions or in wastewater. If
released on land, 1,1,1,2-tetrachloroethane would be
expected to leach through soil and volatilize from
the soil surface. If released into water, it would be primarily lost by
volatilization (estimated half-life 4.2 hr from a
model river). Adsorption to sediment is expected to be relatively low and
bioconcentration in aquatic organisms would not be
significant. 1,1,1,2-Tetrachloroethane is extremely
stable in the atmosphere, reacting with photochemically produced hydroxyl
radicals with an estimated half-life of 550 days.
However, it will be susceptible to washout by rain. Due to
its persistence, it will disperse over long distances and
slowly diffuse into the stratosphere where it would
be rapidly degraded. |
| 环境降解 |
TERRESTRIAL FATE: If released on land,
1,1,1,2-tetrachloroethane would be expected to leach
into the ground and volatilize from the soil surface. AQUATIC FATE: If
released into water, 1,1,1,2-tetrachloroethane would be primarily lost by
volatilization (estimated half-life 4.2 hr from a model
river). Adsorption to sediment is expected to
relatively low. ATMOSPHERIC FATE: 1,1,1,2-Tetrachloroethane is extremely
stable in the atmosphere (estimate half-life 550
days). It will be subject to washout by rain. Due to its persistence, it
will disperse over long distances and slowly diffuse
into the stratosphere where it would be rapidly
degraded. |
| 饮水影响 |
DRINKING WATER: US Groundwater Supply
Survey (945 supplies derived from groundwater chosen
both randomly and on the basis that they may contain VOCs) -
1,1,1,2-tetrachloroethane was not detected in any supplies
at a detection limit of 0.2 ppb . It was confirmed to
be in extracts from the Carrollton water plant in New Orleans which derives
its water from the Mississippi River . The
concentration of 1,1,1,2-tetrachloroethane in a sample
collected over 7 days was 0.11 ppb . EFFL: In a
comprehensive survey of wastewater from 4000 industrial and publicly owned
treatment works (POTWs) sponsored by the Effluent Guidelines
Division of the U.S. EPA, 1,1,1,2-tetrachloroethane
was identified in discharges of the following industrial category
(frequency of occurrence, median concn in ppb): organics and
plastics (1; 27.4), inorganic chemicals (4; 14.8),
electronics (1; 272.6) . The highest effluent concn was 272.6 ppb in the
electronics industry . |
