Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
boiling point
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a solid which decomposes before boiling
Cross-reference
Reason / purpose for cross-reference:
data waiving: supporting information
Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
01 March 2010 – 25 March 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis
Remarks:
(differential scanning calorimetry)
Key result
Melting / freezing pt.:
197 °C
Atm. press.:
1 013.25 hPa
Decomposition:
yes
Remarks:
Reaction and/or decomposition was observed directly after melting
Decomp. temp.:
> 197 °C
Sublimation:
no
Melting / freezing pt.:
471 K
Conclusions:
The melting temperature of ammonium dihydrogenorthophosphate was determined to be 197°C using using differential scanning calorimetry (GLP-compliant study in accordance with EC A.1, OECD 102). The substance decomposes during melting.

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion