CAS No.142-71-2,Cupric acetate Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	142-71-2
Name:	Cupric acetate
Article Data:	95

Formula:	C₄H₆CuO₄
Molecular Weight:	363.27
Synonyms:	Aceticacid, copper(2+) salt (8CI,9CI);Copper acetate (Cu(OAc)2) (7CI);Acetic acidcupric salt;Copper acetate (Cu(C2H3O2)2);Copper acetate(Cu(MeCO2)2);Copper diacetate;Copper(2+) acetate;Copper(2+) diacetate;Copper(II) acetate;Crystallized verdigris;Crystals of Venus;Cupric diacetate;Neutral verdigris;Venus copper;
EINECS:	205-553-3
Density:	1.068g/cm3
Melting Point:	115 °C
Boiling Point:	117.1 °C at 760 mmHg
Flash Point:	40 °C
Solubility:	Soluble in water and alcohol. Slightly soluble in ether and glycerol.
Appearance:	Green crystalline powder
Hazard Symbols:	Xn, N
Risk Codes:	22-36/37/38-50/53
Safety:	26-60-61
Transport Information:	UN 3077 9/PG 3
PSA:	37.30000
LogP:	0.08840

Synthetic route

: copper(II) nitrate trihydrate

: 108-24-7
acetic anhydride

: 142-71-2
copper diacetate

Conditions

Conditions	Yield
In acetic anhydride reflux; washed with acetic anhydride and ether;;	93%
In acetic anhydride reflux; washed with acetic anhydride and ether;;	93%
In neat (no solvent) on warming;;
In neat (no solvent) on warming;;

: [Cu(NO2)(OCHC6H4P(C6H5)2)2]

: 64-19-7
acetic acid

A: 142-71-2
copper diacetate

B: 10102-44-0
Nitrogen dioxide

Conditions

Conditions	Yield
In dichloromethane N2, acid added at room temp.;	A n/a B 85%

...Expand

: 108-24-7
acetic anhydride

A: diacetyl-orthonitric acid

B: 142-71-2
copper diacetate

Conditions

Conditions	Yield
With copper(II) nitrate at 30 - 35℃;

: 108-24-7
acetic anhydride

: 142-71-2
copper diacetate

Conditions

Conditions	Yield
With copper(II) nitrate

: 108-24-7
acetic anhydride

Cu(NO3)2+3H2O: Cu(NO3)2+3H2O

A: diacetyl-orthonitric acid

B: 142-71-2
copper diacetate

Conditions

Conditions	Yield
at 30 - 45℃;

...Expand

: 75-15-0
carbon disulfide

: 938-81-8
N-nitrosoacetanilide

copper: copper

: 142-71-2
copper diacetate

...Expand

: 56-23-5
tetrachloromethane

: 938-81-8
N-nitrosoacetanilide

copper: copper

A: 142-71-2
copper diacetate

B copper (II)-ion: copper (II)-ion

C copper chloride: copper chloride

...Expand

Cu(C2H3O2)2+2 NH3: Cu(C2H3O2)2+2 NH3

: 142-71-2
copper diacetate

Cu(C2H3O2)2+H2O: Cu(C2H3O2)2+H2O

: 142-71-2
copper diacetate

Conditions

Conditions	Yield
With toluene azeotrope Destillation;

: copper(II) acetate tetrahydrate

: 142-71-2
copper diacetate

Conditions

Conditions	Yield
In neat (no solvent, solid phase) byproducts: H2O; acetate was heated in vac. at 150°C for 3 h;

Raw Materials

108-24-7

64-19-7

75-15-0

938-81-8

6046-93-1

20427-59-2

56-23-5

Downstream Products

123-54-6

81-77-6

24190-34-9

1848-84-6

10027-30-2

622-85-5

539-03-7

135-70-6

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History

Copper(II) acetate (CAS NO.142-71-2) is occasionally the primary component of verdigris, the blue-green substance that forms on copper during long exposures to atmosphere. It was historically prepared in vineyards, since acetic acid is a byproduct of fermentation.Copper (cupric) acetate tablets were believed to repel sharks in the mid twentieth century.

Consensus Reports

Reported in EPA TSCA Inventory. Copper and its compounds are on the Community Right-To-Know List.

Standards and Recommendations

ACGIH TLV: TWA 1 mg(Cu)/m³

Specification

The IUPAC name of this chemical is copper diacetate. With the CAS registry number 142-71-2, it is also named as Acetate de cuivre. The product's categorie is organic-metal salt. It is green crystalline powder which is soluble in water and ethanol, slightly soluble in ether and glycerol. In addition, it is highly toxic and the storage environment should be ventilate, low-temperature and dry. Keep Copper(II) acetate separate from acids.

The other characteristics of this product can be summarized as: (1)ACD/LogP: -0.29; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.07; (4)ACD/LogD (pH 7.4): -2.86; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 2.73; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 2; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 0; (12)Flash Point: 40 °C; (13)Enthalpy of Vaporization: 23.7 kJ/mol; (14)Boiling Point: 117.1 °C at 760 mmHg; (15)Vapour Pressure: 13.9 mmHg at 25°C; (16)Exact Mass: 180.95621; (17)MonoIsotopic Mass: 180.95621; (18)Topological Polar Surface Area: 80.3; (19)Heavy Atom Count: 9; (20)Complexity: 25.5.

Preparation of Copper(II) acetate: It has been synthesized for centuries by the method described in the history section. The overall reaction is as follows:
2 CuSO₄.5H₂O + 4 NH₃ + 4 C₂H₄O → Cu₂(OAc)₄(H₂O)₂ + 2 (NH₄)₂SO₄ + 8 H₂O
The hydrate form can be dehydrated by heating at 100 °C in a vacuum:
Cu₂(OAc)₄(H₂O)₂ → Cu₂(OAc)₄ + 2 H₂O
Heating a mixture of anhydrous Cu₂(OAc)₄ and copper metal affords colorless, volatile cuprous acetate:
2 Cu + Cu₂(OAc)₄ → 4 CuOAc

Uses of Copper(II) acetate: It is used as an insecticide, in the preparation of other chemicals, as a fungicide, and mildew preventive, fungicides, printing and dyeing fixing agent. And it also has been used as intermediate to prepare Paris green.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful if swallowed, but also irritating to eyes, respiratory system and skin. And it is also very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. This material and its container must be disposed of as hazardous waste. Additionally, people should avoid release to the environment.

People can use the following data to convert to the molecule structure.
1. SMILES:[Cu+2].[O-]C(=O)C.[O-]C(=O)C
2. InChI:InChI=1/2C2H4O2.Cu/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
3. InChIKey:OPQARKPSCNTWTJ-NUQVWONBAO

The following are the toxicity data which has been tested.

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	2500ug/kg (2.5mg/kg)		Biochemical Pharmacology. Vol. 30, Pg. 771, 1981.
mouse	LD50	intravenous	20mg/kg (20mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
mouse	LD50	oral	196mg/kg (196mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rabbit	LDLo	oral	250mg/kg (250mg/kg)		Journal of Medical Research. Vol. 42, Pg. 461, 1919.
rat	LD50	intraperitoneal	14700ug/kg (14.7mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rat	LD50	intravenous	17100ug/kg (17.1mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rat	LD50	oral	501mg/kg (501mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Indian Journal of Pharmacology. Vol. 23, Pg. 153, 1991.
rat	LD50	subcutaneous	350mg/kg (350mg/kg)	MUSCULOSKELETAL: JOINTS	Progress in Medical Chemistry. Vol. 15, Pg. 211, 1977.