Fluorocarbon
vapors are 4 to 5 times heavier than air. Thus high concn
tend to accumulate in low-lying areas, resulting in hazard
of inhalation of concentrated vapors, which may be fatal.
/Fluorocarbons/
[Clayton, G.D., F.E. Clayton (eds.) Patty's
Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D,
2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons
Inc., 1993-1994. 1195]
Average
Daily Intake: The average daily in take of 1,1,2-trichloro-1,2,2-trifluoroethane
in air, (assume 13-31 parts/trillion(1,2)) is 2.0-4.8 ug/day(SRC).
[(1) Fabian P et al; J Geophys Res 90: 13091-3
(1985) (2) Brodzinsky R, Singh HB; pp. 23-184 in Volatile
Organic Chemicals in the Atmosphere: An Assessment of Available
Data Menlo Park, CA: SRI International (1982)]
NIOSH
(NOES Survey 1981-1983) has statistically estimated that
250,773 workers (79,790 of these are female) are potentially
exposed to 1,1,2-trichloro-1,2,2-trifluoroethane
in the US(1). Occupational exposure to 1,1,2-trichloro-1,2,2-trifluoroethane
may occur through inhalation and dermal contact with this
compound at workplaces where it is produced or used. Due
to its long atmospheric residence time, the general population
is exposed to 1,1,2-trichloro-1,2,2-trifluoroethane
through inhalation of ambient air. Monitoring data indicate
that the general population may also be exposed to
1,1,2-trichloro-1,2,2-trifluoroethane via ingestion
of contaminated water, and via inhalation and dermal contact
with this compound and other consumer products containing
this compound(SRC).
[(1) NIOSH; National Occupational Exposure Survey (NOES)
(1983)]
Average
Daily Intake: The average daily in take of 1,1,2-trichloro-1,2,2-trifluoroethane
in air, (assume 13-31 parts/trillion(1,2)) is 2.0-4.8 ug/day(SRC).
[(1) Fabian P et al; J Geophys Res 90: 13091-3
(1985) (2) Brodzinsky R, Singh HB; pp. 23-184 in Volatile
Organic Chemicals in the Atmosphere: An Assessment of Available
Data Menlo Park, CA: SRI International (1982)]
Ref:
Hazardous Substances Data Bank for 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE
CASRN: 76-13-1.
http://www.fluorideaction.org/pesticides/trichlorotrifluorome.toxnet.htm