CHLORINATED HYDROCARBONS Chemische Eigenschaften,Einsatz,Produktion Methoden
Verwenden
One example, DDT, is an insecticide. It was extensively used
in World War II to delouse personnel and to prevent the spread of plague and other insectborne
diseases. Today, its use is restricted because of its toxicity and its very long life.
Sicherheitsprofil
Suspected carcinogen
with experimental tumors of the liver, lung,
skin, and blood-forming tissues. The
substitution of a chlorine (or other halogen)
atom for a hydrogen greatly increases the
anesthetic action of the aliphatic
hydrocarbons and increases the range of
their systemic effects. In many cases, the
chlorine derivative is quite toxic. In general,
the unsaturated chlorine derivatives are
more narcotic but less toxic than the
saturated derivatives. In the saturated group,
the narcotic effect is proportional to the
number of chlorine atoms. This relationship
is not true for toxicity.
In dealing with these chlorinated
hydrocarbons, it must be remembered that a
toxic action may result from repeated
exposure to concentrations that are too low
to produce a narcotic effect, and that,
consequently, are too low to gve warning of
danger. InQvidual susceptibility varies
widely. Certain workmen may be seriously
affected by concentrations that seem to have
no effect on fellow employees at the same
exposure.
In general reactivity decreases with greater
substitution of halogen for hydrogen atoms.
Halogenated (i.e., fluorine-, chlorine-, or
bromine-containing) acetylene compounds
are unstable and should be treated as
explosives. Lightly substituted haloalkanes
are highly flammable and can react with
Qvalent light metals to form dangerously
reactive products. Lightly substituted
haloalkenes are highly flammable,
peroxidizable, and may polymerize violently.
When heated to decomposition they emit
highly toxic fumes of phosgene. They may
react violently with Al, liquid O2, K, and Na.
CHLORINATED HYDROCARBONS Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
