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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Administrative data

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Reference
Endpoint:
vapour pressure
Type of information:
other: substitute value
Adequacy of study:
supporting study
Vapour pressure:
< 0 Pa
Remarks on result:
other: Assumption based on structure considerations and melting point

Substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" is an inorganic crystalline solid of clay mineral-like lamellar hydrocalumite-type. The melting point/freezing point exceeds 310°C (583 K). Differential scanning calorimetry (DSC) was used to evaluate the melting point. No departure from the base line of the heat flow record was observed that might indicate a melting process while the substance was heated up to and including a temperature of 310°C (583 K). According to REACH Regulation, Annex VII, 7.5, column 2, a study on vapour pressure does not need to be conducted if the melting point is >300°C. For CSA, a vapour pressure < 10exp-10 Pa at 25°C, the lower detection limit of standard methods (c.f. ECHA REACH TGD R.7a, R.7.1.5), is allocated as substitute value.

Description of key information

Not applicable
10exp-10 Pa at 25°C (lower detection limit of standard methods allocated as substitute value)

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information

Substance "reaction mass of calcium hydrogen phosphonate and dialuminium tricalcium hexaoxide" is an inorganic crystalline solid of clay mineral-like lamellar hydrocalumite-type. The melting point/freezing point exceeds 310°C (583 K). Differential scanning calorimetry (DSC) was used to evaluate the melting point. No departure from the base line of the heat flow record was observed that might indicate a melting process while the substance was heated up to and including a temperature of 310°C (583 K). According to REACH Regulation, Annex VII, 7.5, column 2, a study on vapour pressure does not need to be conducted if the melting point is >300°C. For CSA, a vapour pressure 10exp-10 Pa at 25°C, the lower detection limit of standard methods (c.f. ECHA Guidance R.7a, subchapter R.7.1.5 (2017)), is allocated as substitute value.