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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Accoridng to the REACH-regulation Annex VII, section 7.5, Column 2 limit values of the vapour pressure based on a recognised calculation method is sufficient if the Melting point of the Substance is between 200 °C and 300 °C.
The melting point of By-product from Guanindinoacetic acid manufacturing.
The melting points of the main constituents are:
- Guanidinoacetic Acid: 268 °C
- Cyanoguanidine: 209 °C
- Sodium acetate: 324 °C
- Glycine: 225 °C

Therefore the a calculation of vapour pressure of these constituents is applicable.
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Reason / purpose for cross-reference:
read-across source
Qualifier:
no guideline available
Principles of method if other than guideline:
QSAR Toolbox prediction.
- QSAR Toolbox: 4.4
- Database version: 4.4
Key result
Temp.:
25 °C
Vapour pressure:
< 0.001 mBar
Conclusions:
Based on the calculations for the main constituents a vapour pressure of < 0.0011 mBar (0.000828 mmHg) at 25 °C can be assumed.
Executive summary:

The vapour pressure of the main constituents of By-product from Guanindinoacetic acid manufacturing was calculated using the QSAR Toolblox (v. 4.4).


These values were taken as read-across source for the estimation of the vapour pressure of By-product from Guanindinoacetic acid manufacturing.

Description of key information

Vapour pressure of the main constituents of By-product from Guanidinoacetic acid manufacturing at 25 °C was calculated with the QSAR Toolbox.

Key value for chemical safety assessment

Vapour pressure:
0.001 hPa
at the temperature of:
25 °C

Additional information