Cupric hydroxide
- CAS No.
- 20427-59-2
- Chemical Name:
- Cupric hydroxide
- Synonyms
- COPPER HYDROXIDE;Cu(OH)2;Kocide;copper dihydroxide;COPPER(II) HYDROXIDE;Parasol;COPPER HYDRATE;Cooper Hydroxide;Comac;cuzin
- CBNumber:
- CB7455575
- Molecular Formula:
- CuH2O2
- Molecular Weight:
- 97.56
- MDL Number:
- MFCD00010968
- MOL File:
- 20427-59-2.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Density | 3.4 |
|---|---|
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Inert atmosphere,2-8°C |
| solubility | H2O: insoluble(lit.) |
| form | Powder |
| color | Blue |
| PH | 7.69(1 mM solution);7.69(10 mM solution);7.69(100 mM solution) |
| Water Solubility | Slightly soluble in waterSoluble in acids, ammonium hydroxide, dilute hydrochloric acid, concentrated alkali and potassium cyanide. Insoluble in water, ethanol, and acetone. |
| Sensitive | Hygroscopic |
| Merck | 14,2642 |
| Solubility Product Constant (Ksp) | pKsp: 19.66 |
| Exposure limits |
ACGIH: TWA 1 mg/m3 NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 |
| Stability | Stable, but hygroscopic. Store in dry conditions. |
| InChI | 1S/Cu.2H2O/h;2*1H2/q+2;;/p-2 |
| InChIKey | JJLJMEJHUUYSSY-UHFFFAOYSA-L |
| SMILES | O[Cu]O |
| FDA 21 CFR | 582.80 |
| CAS DataBase Reference | 20427-59-2(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 3314XO9W9A |
| NIST Chemistry Reference | Copper hydroxide(20427-59-2) |
| EPA Substance Registry System | Cupric hydroxide (20427-59-2) |
| Pesticides Freedom of Information Act (FOIA) | Copper hydroxide |
| UNSPSC Code | 12352302 |
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS05,GHS06,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H318-H330-H410 | |||||||||
| Precautionary statements | P260-P273-P280-P301+P312-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | Xn,N,T | |||||||||
| Risk Statements | 22-37/38-41-50/53-23 | |||||||||
| Safety Statements | 26-36-39 | |||||||||
| RIDADR | 3262 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | GL7600000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 28255000 | |||||||||
| Storage Class | 6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
|||||||||
| Hazard Classifications | Acute Tox. 2 Inhalation Acute Tox. 4 Oral Aquatic Acute 1 Aquatic Chronic 1 Eye Dam. 1 |
|||||||||
| Hazardous Substances Data | 20427-59-2(Hazardous Substances Data) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Cupric hydroxide price More Price(32)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 289787 | Copper(II) hydroxide technical grade | 20427-59-2 | 250g | $57.9 | 2026-04-30 | Buy |
| Sigma-Aldrich | 289787 | Copper(II) hydroxide technical grade | 20427-59-2 | 1kg | $160 | 2026-04-30 | Buy |
| Usbiological | 236958 | Copper(II) hydroxide≥94% ≥94% | 20427-59-2 | 25g | $156 | 2026-06-03 | Buy |
| Usbiological | 236958 | Copper(II) hydroxide≥94% ≥94% | 20427-59-2 | 100g | $163 | 2026-06-03 | Buy |
| Usbiological | 236958 | Copper(II) hydroxide≥94% ≥94% | 20427-59-2 | 250g | $222 | 2026-06-03 | Buy |
Cupric hydroxide Chemical Properties, Uses, Production
Description
Cupric hydroxide appears as a blue powder and it is not stable. Cupric hydroxide is used as a mordant and pigment, in the manufacture of many copper salts, and for staining paper. It is used as a fungicide/bactericide on fruits, vegetables, and ornamentals. It can be used as catalyst, feed additive, and a cuprammonium rayon process reagent to make the first semi-synthetic fiber product, Rayon.
Furthermore, cupric hydroxide is used in the wood preservative products in aqueous systems.
Chemical Properties
Copper(II) hydroxide, Cu(OH)2, is thermodynamically unstable with respect to decomposition to the oxide. Copper(II) hydroxide prepared by the addition of sodium hydroxide to a salt of copper decomposes at temperatures above 100°C, and in the presence of excess alkali, it decomposes at temperatures above 50°C. It is virtually insoluble in water and decomposes in hot water to the more stable copper(II) oxide and water. Copper(II) hydroxide dissolves quickly in mineral acids and ammonia solution. It is mildly amphoteric, and in concentrated alkali, it forms [Cu(OH)3]- or [Cu(OH)4]2- ions. Copper(II) hydroxides can be produced in a kinetically stabilized form depending on the method of precipitation and choice of additives.
Uses
Copper(II) hydroxide has been used as an alternative to the Bordeaux mixture, a fungicide and nematicide.
The orthorhombic nature of copper hydroxide crystals was determined by X ray diffraction. Copper hydroxide can act as a heterogeneous catalyst in the selective oxidative cross coupling of terminal alkynes to yield their corresponding ynamides.
Copper(II) hydroxide is also occasionally used as ceramic colorant. Used as an active precursor in the production of copper(II) compounds. Ammonia-processed copper(II) hydroxide is used in the production of copper(II) naphthenate, copper(II) 2-ethylhexanoate, and copper soaps. Ammonia-processed copper(II) hydroxide is also used in the production of rayon (Schweiter's reagent) and in the stabilization of nylon; as a feed additive, a catalyst in the vulcanization of polysulfide rubber, and an antifouling pigment.
Copper hydroxide based monoliths can be used in the synthesis of copper hydroxide-based monolithic xerogels. Potential applications of this metal organic frameworks (MOFs) include gas storage, separation, drug delivery, and biomedicine. Supported Cu(OH)x can be used as a catalyst for the aerobic cross dehydrogenative coupling of benzenethiols and cyclic amides to yield N-acylsulfenamides.
Preparation
Copper(II) hydroxide is produced by a reaction of copper oxychloride in an aqueous suspension with alkali hydroxide or alkaline earth metal hydroxide in the presence of a stabilizing agent and the product is separated and washed.
Cu(NO3)2 + NaOH --->Cu(OH)2 + NaNO3
Add a magnetic stirring bar to the beaker and place the flask on a microscale magnetic stirrer. At room temperature, with stirring, carefully add 6M NaOH solution dropwise until the solution is basic to red litmus paper. Use a capillary tube to remove sample for pH testing. A light blue precipitate of copper(II) hydroxide is formed as this reaction is carried out. Make sure the litmus paper has actually changed from red to blue, rather than simply being colored blue by the blue precipitate.
References
[1] Michael Ash, Handbook of Preservatives, 2004
[2] Günter Joseph and Konrad J. A. Kundig, Copper: Its Trade, Manufacture, Use, and Environmental Status, 1999
[4] Bo Liu, Bin Liu, Yongbo Zhou and Wanzhi Chen, Copper(II) Hydroxide Complexes of N-Heterocyclic Carbenes and Catalytic Oxidative Amination of Arylboronic Acids, Organnometallics, 2010, vol. 29, 1457-1464
[5] George B. Kauffman, Rayon: The first semi-synthetic fiber product, Journal of Chemical Education, 1993, vol. 70, 887
Chemical Properties
Blue powder.Soluble in acids and ammonium hydroxide; insoluble in water.
Chemical Properties
Blue, gelatinous or amorphous powder. Insoluble in water.
Uses
In manufacture of rayon, battery electrodes, other Cu salts; as mordant in dyeing; as pigment; in fungicides, insecticides; as feed additive; in treating and staining paper; in preparation of Schweitzer's reagent; in catalysts.
Uses
Used as a raw material in chemical processing and catalyst manufacturing. Copper(II) hydroxide is used as ceramic colorant. In organic synthesis, it is used as a catalyst to prepare 1-((2-aminoethyl)amino)anthraquinone, 1-amino-4-((2-aminoethyl)amino)anthraquinone by reacting with 1-bromoanthraquinone or 1-amino-4-bromoanthraquinone respectively. It is involved in the synthesis of benzoic acid and octanoic acid. It is used as a precursor in the production of rayon, battery electrodes and other copper salts It is also used as a dye mordant, paper colorant, pigment and feed additive.
General Description
The orthorhombic nature of copper hydroxide crystals was determined by X ray diffraction. Copper hydroxide can act as a heterogeneous catalyst in the selective oxidative cross coupling of terminal alkynes to yield their corresponding ynamides.
Hazard
Toxic by ingestion and inhalation.
Mechanism of action
Absorbed copper disrupts the enzyme systems of the pathogens. Multi-site activity.
Potential Exposure
Inorganic copper fungicide, nematicide, and microbiocide
Shipping
UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
Incompatibilities
Reacts with calcium (metal hydroxides), nitroethane, nitromethane, 1-nitropropane, zirconium
Waste Disposal
Copper-containing soluble wastes can be concentrated through the use of ion exchange, reverse osmosis, or evaporators to the point where copper can be electrolytically removed and sent to a reclaiming firm. If recovery is not feasible, the copper can be precipitated through the use of caustics and the sludge deposited in a chemical waste landfill Copper-containing wastes can be concentrated through the use of ion exchange, reverse osmosis, or evaporators to the point where copper can be electrolytically removed and sent to a reclaiming firm. Details of copper recovery from a variety of industrial wastes have been published. If recovery is not feasible, the copper can be precipitated by the use of caustics and the sludge deposited in a chemical waste landfill. Recommendable methods: Precipitation, solidification, landfill, discharge to sewer, & incineration. Peer-review: Precipitate copper with alkali, filter, solidify precipitate. (Do not use ammonia as alkali). Cation exchange will allow recovery of copper. Eluate from cation exchanger can be passed through anion exchanger to remove (or reduce) naphthenic acid content. Exhausted ion exchange resins can be landfilled. (Peer-review conclusions of an IRPTC expert consultation)
Pesticide Type
Fungicide
Cupric hydroxide Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| DONGJIANG ENVIRONMENTAL CO., LTD | 0755-88242785 18188622508 | yjb@dongjiang.com.cn | China | 6 | 58 |
| Wuhan Ji Ye Sheng Chemical Co., Ltd. | 15387013945 | 1806989108@qq.com | China | 2163 | 58 |
| Wuhan Jiyesheng Chemical Co., Ltd | 15307169873 | 1218603465@qq.com | China | 2158 | 58 |
| JYS | 13545274181 | 3870253201@qq.com | China | 2214 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9409 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
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View Latest Price from Cupric hydroxide manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-02 | Cupric hydroxide
20427-59-2
|
$1.00-8.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-07-14 | Copper hydroxide
20427-59-2
|
100KG | 98 | 200TONS | Qingdao Trust Agri Chemical Co.,Ltd | ||
 |
2026-06-30 | Cupric hydroxide
20427-59-2
|
1KG | 98 | 10000KGS | Shaanxi Dideu New Materials Co. Ltd |
-
- Cupric hydroxide
20427-59-2
- $1.00-8.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Copper hydroxide
20427-59-2
- $0.00
- 98
- Qingdao Trust Agri Chemical Co.,Ltd
-
- Cupric hydroxide
20427-59-2
- 98
- Shaanxi Dideu New Materials Co. Ltd
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