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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Data is from estimated database
Qualifier:
according to
Guideline:
other: Modelling database
Principles of method if other than guideline:
The vapour pressure is estimated with a modified version of the Grain method. This method requires a melting point as an input value. Estimated melting point values are used.

EPI Suite estimation database
GLP compliance:
no
Type of method:
other: Modified Grain Method
Specific details on test material used for the study:
- Name of test material: 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol
- Molecular formula: C24H29N3O
- Molecular weight: 375.513
- Smiles: C(c1ccc(cc1)N(C)C)(c1ccc(cc1)N(C)C)(c1ccc (cc1)NC)O
-Inchi: 1S/C24H29N3O/c1-25-21-12-6-18(7-13-21)24 (28, 19-8-14-22(15-9-19)26(2)3)20-10-16-23(17-11-20)27(4) 5/h6-17,25,28H,1-5H3

- Substance type: Organic
- Physical state: solid
Key result
Temp.:
25 °C
Vapour pressure:
0 mm Hg
Remarks on result:
other: VP : 3.87E-012 mm Hg
Conclusions:
Vapour Pressure of 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol was estimated to be 3.87E-012 mm Hg
Executive summary:

Vapour Pressure of 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol was estimated to be 3.87E-012 mm Hg.

Description of key information

Vapor Pressure of 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol of the key study was estimated to be 0.0000000000039 mmHg (3.9E-12)at a temperature of 25 °C. This value when converted into Pascal (Pa) works out to be 0.00000000052 Pa at a temperature of 25 deg C. Thus it can be conlcuded that 4,4'-bis(dimethylamino)-4''-(methylamino) trityl alcohol has very low vapour pressure

Key value for chemical safety assessment

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

Additional information

Vapor Pressure of 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol of the key study was estimated to be 0.0000000000039 mmHg (3.9E-12)at a temperature of 25 °C. This value when converted into Pascal (Pa) works out to be 0.00000000052 Pa at a temperature of 25 deg C. Thus it can be conlcuded that 4,4'-bis(dimethylamino)-4''-(methylamino)trityl alcohol has very low vapour pressure