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EC number: 230-785-7 | CAS number: 7320-34-5
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- other: Handbook data
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- according to guideline
- Guideline:
- other: no data
- Deviations:
- not applicable
- Principles of method if other than guideline:
- No data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Melting / freezing pt.:
- 843 K
- Melting / freezing pt.:
- 916 K
- Conclusions:
- Tetrapotassium pyrophosphate has a reported melting point of > 843 K (>569°C). This study is conducted according to an appropriate method and therefore the study is considered to be acceptable and to adequately satisfy the regulatory requirement as part of a weight of evidence for this endpoint.
- Endpoint:
- melting point/freezing point
- Type of information:
- other: handbook data
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Qualifier:
- according to guideline
- Guideline:
- other: no data
- Deviations:
- not specified
- Principles of method if other than guideline:
- No data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Melting / freezing pt.:
- 1 090 °C
- Conclusions:
- Tetrapotassium pyrophosphate has a reported melting point of 1090°C.
- Endpoint:
- melting point/freezing point
- Type of information:
- other: handbook data
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- according to guideline
- Guideline:
- other: no data
- Deviations:
- not applicable
- Principles of method if other than guideline:
- No data
- GLP compliance:
- not specified
- Type of method:
- other: no data
- Melting / freezing pt.:
- > 300 °C
- Remarks on result:
- other: Looses 3H2O at 300°C
- Conclusions:
- Tetrapotassium pyrophosphate has a reported melting point of > 300°C.
Referenceopen allclose all
Description of key information
The endpoint 'melting point' has been addressed with a weight of evidence approach' in accordance with Annex XI, Section 1.2 of Regulation (EC) No. 1907/2006 (REACH). All available data indicate the melting point of tetrapotassium pyrophosphate to be >300°C (values vary according to source)..
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 600 °C
Additional information
For the purpose of environmental fate modelling, the key value for chemical safety assessment taking into account the results from each Weight of Evidence study
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
