Copper(ii) hydroxide
CAS 20427-59-2
EC 243-815-9
Formula CuH2O2
MW 97.56 g/mol
Salts & Minerals Agriculture & FeedWater TreatmentPulp & Paper Preservation & BiocidepH Regulation & Buffering
Description
Copper(II) hydroxide (CAS 20427-59-2) is an inorganic copper salt commercially available under trade names including Kocide, Kocide 101, Comac, Kuprablau, and Cupravit blau. It carries no assigned E-code and is registered under EC number 243-815-9 with the molecular formula CuH2O2.
In agriculture, it functions as a contact fungicide and bactericide, releasing copper ions that disrupt microbial enzyme systems to control foliar pathogens on crops. Water treatment operations use it to suppress algae and bacterial growth in reservoirs and distribution systems. The pulp and paper industry applies it as a preservative biocide to inhibit microbial degradation during processing.
Copper(II) hydroxide is supplied as a technical-grade powder and is subject to REACH registration requirements within the EU. It is classified as a biocidal active substance under BPR (Regulation EU 528/2012). Procurement teams should confirm supplier SDS documentation and applicable authorisation status for the intended product type.
In agriculture, it functions as a contact fungicide and bactericide, releasing copper ions that disrupt microbial enzyme systems to control foliar pathogens on crops. Water treatment operations use it to suppress algae and bacterial growth in reservoirs and distribution systems. The pulp and paper industry applies it as a preservative biocide to inhibit microbial degradation during processing.
Copper(II) hydroxide is supplied as a technical-grade powder and is subject to REACH registration requirements within the EU. It is classified as a biocidal active substance under BPR (Regulation EU 528/2012). Procurement teams should confirm supplier SDS documentation and applicable authorisation status for the intended product type.
Physical Properties
| Density | 3.37 g/cm³ |
| Appearance | Blue, gelatinous or amorphous powder. Insoluble in water. |
| Color | Blue |
| Form | Powder |
| Water Solubility | Slightly soluble in waterSoluble in acids, ammonium hydroxide, dilute hydrochloric acid, concentrated alkali and potassium cyanide. Insoluble in water, ethanol, and acetone. |
| Vapor Pressure | 0Pa at 25℃ |
| pH | 7.69(1 mM solution);7.69(10 mM solution);7.69(100 mM solution) |
Trade & Regulatory
| HS Code | 28255000 |
| Storage Class | 6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Other Names
ComacKocideKuprablauKocide 101Comac parasolCupravit blauCupravit BlueCOPPER HYDRATECOPPER HYDROXIDE
Related Products
Raw Materials
Derivatives
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