Biochemical decomposition of coal-tar dyes. II. Acute toxicity of coal-tar dyes and their decomposed products.
Twenty kinds of coal-tar dyes were subjected to median tolerance limit (TLm) test by use of Himedaka (Oryzias latipes) for the comparision of their acute toxicities. It became clear that 4 kinds of halogens substituted xanthene compounds dyes showed strong acute toxicities. From the fact that uranine had the lower acute toxicity than halogens substituted compounds and the toxicities of these 4 dyes increased through irradiation, it was assumed that halogen atoms in dyes might be responsible for these strong acute toxicities to fish.
D000693:Anaerobiosis; D000818:Animals; D001391:Azo Compounds / Q000633:toxicity; D001673:Biodegradation, Environmental; D003033:Coal Tar / Q000528:radiation effects / Q000633:toxicity*; D005399:Fishes; D005505:Food Coloring Agents / Q000528:radiation effects / Q000633:toxicity*; D008027:Light; D010101:Oxygen Consumption / Q000187:drug effects; D014966:Xanthenes / Q000528:radiation effects / Q000633:toxicity
D001391:Azo Compounds; D005505:Food Coloring Agents; D014966:Xanthenes; D003033:Coal Tar