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Copper hydroxide

CAS Number
20427-59-2
EC Number
243-815-9
Chemical Formula
CuH2O2
Molecular Weight
97.56 g/mol

Description

Copper hydroxide ( CAS 20427-59-2 ), also known as cupric hydroxide, is an inorganic copper salt used industrially as a biocide, fungicide, and pH-regulating agent. Its controlled reactivity and copper ion release make it a functional active ingredient across agriculture, water treatment, and specialty chemical applications for various industrial sectors. In agriculture, it is the active ingredient in crop protection formulations targeting fungal and bacterial diseases in fruits, vegetables, and cereals including downy mildew and fire blight. Water treatment operations use it to control algae and microbial growth in industrial cooling systems and municipal infrastructure. It is also used in wood preservation and as a process chemical. It functions as a precursor in the production of other copper compounds and specialty catalysts. The material is supplied as a blue powder or paste, with particle size varying by grade. Agricultural-grade material typically conforms to specifications aligned with FAO/WHO guidelines and is formulated into wettable powders (WP) or suspension concentrates (SC) for field use. Technical grade is available for industrial and chemical synthesis applications. This ensures high purity and consistent performance for manufacturers requiring specific chemical properties in their processes. Contact us for supply of Copper hydroxide Request Quote

Other Names (Synonyms)

Cupric hydroxide | Cu(OH)2 | Copper dihydroxide | Copper(II) hydroxide | Cupric hydroxide (Cu(OH)2) | Copper hydroxide (Cu(OH)2) | Kocide 101 | Cupravit Blue

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Density3.37 g/cm³
AppearanceBlue, gelatinous or amorphous powder. Insoluble in water.
ColorBlue
FormPowder
Water SolubilitySlightly soluble in waterSoluble in acids, ammonium hydroxide, dilute hydrochloric acid, concentrated alkali and potassium cyanide. Insoluble in water, ethanol, and acetone.
Vapor Pressure0Pa at 25℃
pH7.69(1 mM solution)
7.69(10 mM solution)
7.69(100 mM solution)

Safety & Handling

Danger
GHS05· CorrosiveGHS06· ToxicGHS09· EnvironmentGHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H318Causes serious eye damage
H330Fatal if inhaled
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Trade & Regulatory

HS Code28255000
Storage Class6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)3