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EC number: 212-668-2 | CAS number: 842-07-9
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017-01-09 – 2017-01-09
- 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
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- The melting point determination of Test item 1-phenylazo-2-naphthol (CAS No. 842-07-9 ) was done as per the test guideline OECD 102
- GLP compliance:
- no
- Type of method:
- other: Capillary/metal block.
- Specific details on test material used for the study:
- Name of test material (as cited in study report): 1-phenylazo-2-naphthol
Molecular formula :C16H12N2O
Molecular weight :248.284
Smiles notation : c12c(\N=N\c3ccccc3)c(ccc1cccc2)O
InChl : 1S/C16H12N2O/c1915111012645914(12)16(15)1817137213813/h111,19H/b1817+
Physical State: Solid
Substance type: Organic - Key result
- Melting / freezing pt.:
- 157.1 - 162.3 °C
- Atm. press.:
- 976.85 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting point determination of 1-phenylazo-2-naphthol (CAS No. 842-07-9) 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 157.1°C - 162.3°C at 976.8hPa.
- Executive summary:
The melting point determination of 1-phenylazo-2-naphthol (CAS No. 842-07-9) 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 157.1°C -162.3°C at 976.8hPa.
Reference
Description of key information
The melting point determination of 1-phenylazo-2-naphthol (CAS No. 842-07-9) 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 157.1°C -162.3°C at 976.8hPa.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 157.1 °C
Additional information
The melting point determination of 1-phenylazo-2-naphthol (CAS No. 842-07-9) 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 157.1°C -162.3°C at 976.8hPa.
Other supporting studies from various reliable sources such as authoritative database and handbooks suggests that the melting point of chemical was reported to be in the range of 131 degree C to 134 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 temperature as 157.1 degree C to 162.3 degree C, thus considered as key study for the chemical safety assessment.
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