Copper thiocyanate

Endpoint summary

Additional information

The physical and chemical properties are summarised in the following table:

Property	Value	Remarks
Physical state at 20°C and 101.3 kPa	Solid	Form: Powder Colour: White-grey Odour: Odourless
Melting/freezing point	Decomposes in the range 400-500°C	No melting point at atmospheric pressure.  Test item decomposes before the melting point.
Boiling point	Not applicable	A determination of boiling point is not applicable, as the substance is a solid which decomposes before boiling.
Relative density	2.844	Temp.: 20.0 °C.
Vapour pressure	< 1.0E-7 hPa
Surface tension	Not applicable	Based on structure, surface activity is not expected or cannot be predicted.
Water solubility	Solubility at pH 7 (20°C): 2.03mg/L Solubility at pH 7 (30°C): 1.91mg/L Solubility at pH 4.1 (20°C): 23.9mg/L Solubility at pH 9 (20°C): 0.12mg/L	The solubility of copper thiocyanate was tested at pH 7 in pure water saturated with atmospheric carbon dioxide. Solubility at pH 4.1 was determined in a solution of water and 0.2ml H2SO4 0.2M. Solubility at pH 9 was determined in borate buffer (50mmol/L).
Partition coefficient n-octanol/water (log value)	Not applicable	A determination of partition coefficient is not applicable, as the substance does not dissolve in water or in octanol.
Flash point	Not applicable	Flash point was not determined, as it is only relevant to liquids and low melting point solids.
Flammability	Not highly flammable
Explosive properties	Not applicable	An assessment of explosive properties does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties.
Self-ignition temperature	364.13°C
Oxidising properties	Not applicable	An assessment of oxidising properties does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties.
Granulometry	Volume-rated particle size distribution by laser diffraction: D(v,0.1) 2.38 µm; D(v,0.5) 8.65 µm; D(v,0.9) 16.43 µm Number-rated particle size distribution by laser diffraction: D(n,0.1) 0.453 µm; D(n,0.5) 0.668 µm; D(n,0.9) 1.300 µm	Joint registrants that produce or import copper thiocyanate corresponding to this specification are able to refer to the Lead Registrants 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).
Stability in organic solvents and identity of relevant degradation products	Solubility in 1,2-dichloroethane: < 10 g/L at 20°C Solubility in ethyl acetate: < 10 g/L at 20°C Solubility in n-heptane: < 10 g/L at 20°C Solubility in acetone: < 10 g/L at 20°C Solubility in methanol: < 10 g/L at 20°C Solubility in p-xylene: < 10 g/L at 20°C