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.

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

ACGIH TLV: TWA 1 mg(Cu)/m³

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.