TRAMFLOC, INC.
P.O. Box 350 Tempe, AZ 85280-0350
Telephone: 480-491-6895 Fax: 480-456-1664
Toll Free: 800-613-6803
water@tramfloc.com
Chlorine (chemical symbol Cl) belongs to the group of
elements called halogens. Chlorine has the atomic number 17 and an atomic
weight of 35.45. The chlorine molecule exists in the diatomic state and has the
chemical symbol Cl2. Although chlorine comprises from .015 to .03
percent of the earth’s crust, it is not found in nature but is most commonly
found in mineral compounds.
CHARACTERISTICS
At atmospheric pressure and normal temperatures chlorine is
a yellow/green gas with a sharp, choking odor. At –35 degrees C chlorine
liquefies to an oily, amber substance. The gas is 2.5 times as heavy as air and
the liquid is 1.5 times as heavy as water. A quantity of gas will occupy 456.8
times as much volume as an equal weight of the liquid atmospheric pressure.
REACTIONS
Chlorine is a strong oxidizer and therefore reacts readily
with many other materials. It is not flammable but because of its oxidizing
properties, it will support combustion. As a result, chlorine is very corrosive
to most metals, destructive to organic materials and will react dangerously
with ammonia, turpentine, ether, hydrogen, powdered metals and other
hydrocarbons and reducing agents. Chlorine is only slightly soluble in water,
0.64 percent by weight at 25 degrees C, but is it easily dissolved in alcohol.
MANUFACTURE AND STORAGE
Chlorine is the 8th highest volume chemical
produced in the United Sates. The most common method of manufacture is the
electrolysis of salt brine. This results in chlorine gas with sodium hydroxide
and hydrogen as by products. Commercial chlorine is approximately 99 percent
pure with the remaining 1 percent consisting of bromine, benzene, chlorinated
hydrocarbons and water. The finished product is packaged and transported in
100, 150, and 2000 lb. steel cylinders. Tank trucks carry up to 22 tons and
railroad tank cars holding up to 90 tons are also used, as are 600 and 1100-ton
barges. These containers are filled approximately 85 percent volume with
pressurized liquid chlorine; and as a result, have an internal pressure of
around 100 PSI at 25 degrees C.
HANDLING
The highly reactive nature of chlorine presents unique
conditions for handling and exposure. Chlorine gas is readily detectable by
smell at concentration of around 1 PPM. The gas is extremely irritating at low
concentrations and inhalation of concentrations about 4 to 5 PPM will cause
respiratory difficulty and eventual pulmonary edema. For these reasons strict
adherence to safe handing practices, proper use of protective clothing and
adequate ventilation of work spaces must be maintained at all times. Exposure
to chlorine should be treated immediately with proper first aid measures. All
personnel who handle or work around chlorine should be familiar with the
correct response to chlorine emergencies.
HEALTH PRECAUTIONS
Use only in well ventilated areas. Eyewashes, showers, and
oxygen should be available. Self-contained breathing apparatus or canister-type
respirators should also be accessible.
PERSONAL PROTECTIVE CLOTHING SHOULD INCLUDE
EFFECTS
Low concentrations: burning in the eyes, nose, throat,
redness in the face, sneezing, and coughing.
High concentrations: tightness in throat and chest,
pulmonary edema. 1000 PPM is rapidly fatal.
FIRST AID
Inhalation:
Skin contact:
Eye contact: