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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

The physical and chemical properties of copper di(acetate) are summarised in the following table:




Physical state at 20°C and 101.3 kPa


Form: Crystals or crystalline powder.

Colour: Dark green, transparent.

Odour: Slight odour of acetic acid.

Melting/freezing point

As the test item decomposed on heating, the melting point could not be determined.

Dehydrated from approx. 105 °C, prior to decomposition from approx. 273 °C.

Boiling point

Not applicable.

No boiling point before decomposition.

Relative density

1.92 x 103 kg/m3 at 21.9 ± 0.5 °C.


Vapour pressure

0.00239 Pa at 25°C.

Estimated using a computer-based method.

Surface tension

Sample solution 1: 72 mN/m at 21.2 °C (concentration: 1.08 g/L).

Sample solution 2: 72 mN/m at 21.6 °C (concentration: 1.01 g/L).

The material is not surface active.

Water solubility

pH 5.1: 76.3 g/L of solution at 20.0 ± 0.5 °C.


Partition coefficient n-octanol/water (log value)

Not applicable.

The octanol:water partition coefficient, Pow, is defined as the ratio of the equilibrium concentrations of a dissolved substance in each of the phases in a two phase system consisting of octanol and water. It is usually expressed on a log scale. It is a key parameter in studies of the environmental fate of organic substances, indicating the potential for bioaccumulation and soil absorption. However, the mechanisms of absorption of Cu2+ into organic matter and living cells are understood to be different from those traditionally attributed to carbon-based substances and the parameter therefore has little relevance to ionic copper. The parameter is therefore not considered to be relevant to copper di(acetate).

Flash point

Not applicable.

Not required as the substance is solid.


Not highly flammable.

Failed to ignite in the preliminary screening test.

Explosive properties

Not explosive.

Copper di(acetate) was assessed for chemical groups that imply explosive properties. Since none of these are present in the chemical structure of the test substance, copper di(acetate) is considered not to be explosive.

Self-ignition temperature



Oxidising properties

No oxidising properties.

Copper di(acetate) was assessed for chemical groups that imply oxidising properties. Since none of these are present in the chemical structure of the test substance, copper di(acetate) is considered not to possess any oxidising properties.


Volume-rated particle size distribution by laser diffraction: D(v,0.1) 13.80 µm; D (v,0.5) 86.97 µm; D(v,0.9) 294.00 µm.

Number-rated particle size distribution by laser diffraction: D(n,0.1) 1.08 µm; D (n,0.5) 1.52 µm; D(n,0.9) 3.17 µm.

Joint registrants that produce or import copper di(acetate) corresponding to this specification are able to refer to the Lead Registrant's granulometry data for the purpose of REACH registration.

The material does not fall under the category of nanomaterial (50% < 0.1 µm based on particle number).

The Exposure Scenarios developed under REACH are based on the worst-case assumption that 100% of any material becoming airbourne is respirable.

Stability in organic solvents and identity of relevant degradation products

Not applicable.

As stated in the REACH regulations, the study does not need to be conducted if the substance is inorganic. Furthermore, experience in use indicates that there are no critical issues relating to stability of the substance.

Dissociation constant

4.79 ± 0.10

Estimated using computer-based software.


Not applicable.

Not applicable to solids.

Auto flammability