Registration Dossier

Diss Factsheets

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

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.