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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Type of method:
differential scanning calorimetry
Boiling pt.:
> 103 °C
Atm. press.:
981 mBar

The test item HEDP #13082 Nachsubstanz shows a boiling (or/ and a thermal decomposition with evaporation of the decomposition components) from a subcomponent (ca. 11 wt. % - possibly water of crystallisation) earliest at ca. 103°C (at 981 mbar) according to the definition in the OECD guideline 103.

Conclusions:
The test item HEDP #13082 Nachsubstanz shows a boiling (or/ and a thermal decomposition with evaporation of the decomposition components) from a subcomponent (ca. 11 wt. % - possibly water of crystallisation) earliest at ca. 103°C (at 981 mbar) according to the definition in the OECD guideline 103.

Description of key information

Boiling point: HEDP-4Na melts above 500°C.

Key value for chemical safety assessment

Additional information

The boiling point of HEDP-4Na was attempted using a Differential Scanning Calorimetry (DSC) method in accordance with OECD Test Guideline 103. During the study, it was observed that the thermograms show evidence of loss of water at about 103°C and 981 mBar. During the melting point study using same DSC method, HEDP-4Na was observd not to melt below 500°C.