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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-04 – 2017-02-04
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental result performed using standard methods of analysis
Reference:
Composition 1
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
The melting point determination of 3,5-diaminobenzoic acid (CAS No. 535-87-5 ) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.
GLP compliance:
not specified
Type of method:
other: standard laboratory method
Test material information:
Composition 1
Specific details on test material used for the study:
- Name of test material (as cited in study report): 3,5-Diaminobenzoic acid
- Molecular formula : C7H8N2O2
- Molecular weight : 152.1522 g/mol
- Substance type:Organic
- Physical state:Solid
Key result
Melting / freezing pt.:
>= 229.3 - <= 239.5 °C
Atm. press.:
976 hPa
Decomposition:
no
Sublimation:
no
Conclusions:
The melting point determination of 3,5-diaminobenzoic acid (CAS No. 535-87-5) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined to be 229.3°C- 231.5°C at 976.0hPa.
Executive summary:

The melting point determination of 3,5-diaminobenzoic acid (CAS No. 535-87-5) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined  to be 229.3°C- 231.5°C at 976.0hPa.

Description of key information

The melting point determination of 3,5-diaminobenzoic acid (CAS No. 535-87-5) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined  to be 229.3°C- 231.5°C at 976.0hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
229.3 °C

Additional information

The melting point determination of 3,5-diaminobenzoic acid (CAS No. 535-87-5) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and mean melting temperature range was determined  to be 229.3°C- 231.5°C at 976.0hPa.

Other suppoting study from various reliable sources such as authoritative database and handbooks also suggests that the melting point of chemical 3,5 -diaminobenzoic acid was determined to be 228 degree C.

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of melting point as in the range of 229.3°C- 231.5°C at 976.0hPa.,thus considered as key study for the chemical safety assessment.