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2,4,5-Trichlorophenol (TCP) is an organochloride with the molecular formula C 6 H 3 Cl 3 O.It has been used as a fungicide and herbicide. [2] Precursor chemical used in the production of 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T) and hexachlorophene involves the intermediate production of 2,4,5-trichlorophenol (TCP) and the formation of 2,3,7,8-Tetrachlorodibenzodioxin (TCDD, commonly ...
In Canada, the use and sale of 2,4,5-T was prohibited after 1985. [5] The international trade of 2,4,5-T is restricted by the Rotterdam Convention. 2,4,5-T has since largely been replaced by dicamba and triclopyr. Human health effects from 2,4,5-T at low environmental doses or at biomonitored levels from low environmental exposures are unknown.
Bis[2,4,5-trichloro-6-(pentyloxycarbonyl)phenyl]oxalate (also known as bis(2,4,5-trichloro-6-carbopentoxyphenyl) oxalate or CPPO) is an organic compound with the formula (C 5 H 11 O 2 CC 6 HCl 3 O) 2 C 2 O 2. A white solid, it is classified as a diester of oxalic acid. It is an active ingredient for the chemiluminescence in glowsticks. [1]
2,4,6-Trichlorophenol, also known as TCP, phenaclor, Dowicide 2S, Dowcide 2S, omal, is a chlorinated phenol that has been used as a fungicide, herbicide, insecticide, antiseptic, [3] defoliant, and glue preservative. [4] It is a clear to yellowish crystalline solid with a strong, phenolic odor.
The molecule consists of a phenyl ring attached to the isocyanate functional group. It is a colourless liquid that reacts with water. Phenyl isocyanate has a strong odor and tearing vapours, therefore it has to be handled with care. Characteristic of other isocyanates, it reacts with amines to give ureas. [2]
2,4,6-Trichlorophenol, for example, has two chlorine atoms in the ortho positions and one chlorine atom in the para position. There are six different isomers: 2,3,4-Trichlorophenol
CH 2 =CHCH 2 Cl + Na 2 S 2 O 3 → CH 2 =CHCH 2 S 2 O 3 Na + NaCl CH 2 =CHCH 2 S 2 O 3 Na + NaCN → CH 2 =CHCH 2 SCN + Na 2 SO 3. Sulfenyl chlorides (RSCl) also convert to thiocyanates. Aryl thiocyanates are traditionally produced by the Sandmeyer reaction, which involves combining copper(I) thiocyanate and diazonium salts: [3]
TCPO, or bis(2,4,6-trichlorophenyl) oxalate, is a chemical used in some types of glow sticks and is a key chemical in many chemiluminescent reactions. TCPO is classified as damaging to human organs and toxic if inhaled with an inhalable toxicity of 3.02 mg/L and oral toxicity LD50 of 820 mg/kg (rat).
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