Edouard Bastarache on wed 14 feb 01
Potassium bichromate :
Potassium compounds:
Potassium is not toxic.Any toxicity of the salts is due to the anion.
The following salts are known to be hazardous: arsenate, arsenite,
bichromate, chromate, cyanide, hydroxide, permaganate.
When heated to decomposition they emit toxic fumes of K2O.
Potassium bichromate: Human poison by ingestion. An experimental
poison by ingestion, intraperitoneal, intraveinous, and sub-cutaneous
routes. Human mutagenic data.
One synonym is Potassium dichromate(VI).
Dichromates belong to Group #4 of ACGIH=3DHexavalent chromium compounds,
which are compounds that may cause chrome ulcers, irritative dermatitis,
or nasal septal perforation.
Certain hexavalent chromium compounds have been demonstrated to be
carcinogenic on the basis of epidemiological investigations of workers
and experimental studies with animals..In general, these tend to be of =
low
solubility in water and, thus, are subdivided into two subgroups:
a-Water-soluble hexavalent chromium compounds
to which potassium dichromate belongs.
b-Water-insoluble hexavalent chromium compounds: such as lead chromate,
strontium chromate, etc.
Later,
Edouard Bastarache
Irr=E9ductible Qu=E9becois
Sorel-Tracy
Dans / In "La Belle Province"
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/
References:
1-Sax's Dangerous Properties of Industrial Materials, Carl Lewis, last =
edition
2-chemical Hazards of the Workplace, Proctor & Hugues, last edition.
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