Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

The registered substance has the following physical and chemical properties:

- Appearance/physical state/colour:white powdery mineral.

- Melting point:800°C

- Density:1.852

- Particle size distribution (Granulometry):106 μm

- Vapour pressure:In accordance with column 2 of Reach Regulation 1907/2006/EC Annex VII section 7.5, the vapour pressure does not need to be conducted if the melting point is above 300 degree C. The melting point of zinc cyanide was determined to be 800°C. Therefore, a study on vapour pressure is not relevant.

- Partition coefficient:In accordance with column 2 of REACH Regulation 1907/2006/EC Annex VII section 7.8, the test on partition coefficient n-octanol/water does not need to be conducted if the substance is inorganic. Zinc cyanide is an inorganic substance, therefore this endpoint was waived.

- Water solubility: Zinc cyanide is considered as practically insoluble in water (0.0047 g/L).

- Flammability: non-flammable

- Explosiveness: According to the column 2 of the annex VII section 7.11 of Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), the study does not need to be conducted if there are no chemical groups associated with explosive properties present in the molecule. According to the structural formula of the registered substance, zinc cyanide is a chemical group that does not have explosive properties in the molecule. Therefore, the study is scientifically not necessary and the substance is regarded as non explosive.

- Oxidising properties:According to the column 2 of the annex VII section 7.13 of Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), the study does not need to be conducted if the substance is incapable of reacting exothermically with combustible materials, for example on the basis of the chemical substance (e.g. inorganic substances not containing oxygen or halogen atoms). Since Zinc cyanide does not contain oxygen, fluorine or chlorine, it does not react with flammable substances and does not react with exothermic substances. Therefore this is subject to exemption and the substance is regarded as non oxidising.

Additional information