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Physical & Chemical properties

Vapour pressure

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Description of key information

A study for the endpoint 'vapour pressure' has not been performed for disodium dihydrogenpyrophosphate. An adaptation from the standard testing regime is justified on the following basis:
According to Annex VII, section 7.5, column 2 of Regulation No. 1907/2006, a study for the vapour pressure need not be conducted if the melting
point is above 300°C. As the melting point of disodium dihydrogenpyrophosphate has been determined to be >450°C, a study for vapour pressure is not scientifically justified.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information

For the purpose of environmental fate modelling, the key value for chemical safety assessment has been set at 0.000001 Pa as recommended by the ECHA Guidance document Appendix R.7.13-2: Environmental risk assessment for metals and metal compounds (July 2008).