Dicopper chloride trihydroxide
- Copper (II) trihydroxidchlorid
- Dicopper chloride trihydroxide
- Basic copper chloride
- CuCl2 · 3 Cu ( OH) 2
- Also: Cu2 ( OH) 3Cl
Blue -green powder
Fixed
3.74 g · cm -3
> 220 ° C ( decomposition)
Practically insoluble in water ( 0.0012 g · l-1 at 20 ° C)
Attention
0.1 mg · m-3
700 mg · kg -1 ( LD50, rat, oral)
Template: Infobox chemical / molecular formula search available
Copper oxychloride is a chemical compound of copper hydroxide and chlorine.
Production
Copper oxychloride can be prepared by hydrolysis of a copper ( II) chloride.
Or
Industrially it is produced by the oxidation of copper (I ) chloride in a brine solution. To copper ( II) chloride is reduced to a concentrated solution of sodium chloride with copper metal. The resulting copper ( I) chloride is then heated and oxidized in air to copper oxychloride.
Use
Copper oxychloride is used as a contact fungicide.
The approval of copper oxychloride as one of several " copper compounds " by the EU Commission took effect December 1, 2009 for applications as a bactericide and fungicide.
In Germany pesticides are approved with this drug for Growing of pome fruits and strawberries. In Austria and Switzerland, copper oxychloride preparations of potatoes and vines, and a variety of fruits, berries and vegetables are allowed.