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Cupric hydroxide

Cupric hydroxide structure

CAS No:
20427-59-2
Formula:
CuH2O2
Chemical Name:
Cupric hydroxide
Synonyms:
Chiltern kocide 101;Comac;Comac parasol;comacparasol;Copper hydrate, hydrated cupric oxide;Copper hydroxide (Cu(OH)2);Copper hydroxide (ic);Copper oxide hydrated
Categories:
Inorganic Chemistry > Inorganic Bases

Description

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.

Copper hydroxide is an organic molecular entity.

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.

Blue powder.Soluble in acids and ammonium hydroxide; insoluble in water.

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.

Cupric hydroxide Basic Attributes

Molecular Weight：

97.56

Exact Mass：

96.935081

EC Number：

243-815-9

UNII：

3314XO9W9A

TSCA：

TSCA listed

Color/Form：

Blue

HScode：

28255000

Characteristics

PSA：

40.46000

XLogP3：

-0.35610

Appearance：

Blue Powder

Density：

3.4

Melting Point：

160ºC

Boiling Point：

100ºC at 760 mmHg

Water Solubility：

Slightly soluble in waterSoluble in acids, ammonium hydroxide, dilute hydrochloric acid, concentrated alkali and potassium cyanide. Insoluble in water, ethanol, and acetone.

Storage Conditions：

0-6°C

Vapor Pressure：

0Pa at 25℃

Toxicity：

Oral-Rat LD50: 1000 mg/kg

Flammability characteristics：

Non-combustible; produces toxic copper-containing fumes in the fire

PH：

7.69(1 mM solution);7.69(10 mM solution);7.69(100 mM solution)

Critical Temperature & Pressure：

Inert atmosphere,2-8°C

Safety Information

Transport codes：

3262

wgk germany：

hazard class code：

Xn,N,T

safety instructions：

26-36-39

RTECS Number：

GL7600000

Marks：

Xn,N,T

Storage features：

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Stability/Shelf Life：

Stable, but hygroscopic. Store in dry conditions.

Precautionary statement(s)：

P260-P273-P280-P284-P305 + P351 + P338-P310

Hazard Statements：

Toxic by ingestion and inhalation.

Hazardous Reactivities：

Reacts with calcium (metal hydroxides), nitroethane, nitromethane, 1-nitropropane, zirconium

RIDADR：

3262

Toxicity

Toxicity class：

moderately toxic

Human Exposure：

ACGIH: TWA 1 mg/m3NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3

Drug Information

MeSH Entry Terms：

Cu(OH)2

Cupric hydroxide Use and Manufacturing

Methods of Manufacturing

The copper salt method neutralizes soluble copper salts, such as copper sulfate solution, with sodium hydroxide solution, and crystallizes and separates the finished copper hydroxide product. Its CuSO4+2NaOH→Cu(OH)2+Na2SO4

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.

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.

Computed Properties

Molecular Weight:97.56
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Exact Mass:96.935076
Monoisotopic Mass:96.935076
Topological Polar Surface Area:2
Heavy Atom Count:3
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

Material

Copper sulfate

Copper bromide (CuBr2)

Downstream Products

Cuprous chloride

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Guide of Cupric hydroxide

Description
Basic Attributes
Characteristics
Safety Information
Toxicity
Drug Information
Use and Manufacturing
Computed Properties
Material
Downstream Products
Recommended Suppliers
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Cupric hydroxide

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