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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:
2017-02-27 – 2017-02-27
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:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
The melting point determination of chemical 3-methylsulphanilic acid (CAS No. 98-33-9 ) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.
GLP compliance:
no
Type of method:
other: standard laboratory method
Specific details on test material used for the study:
- Name of test material:3-methylsulphanilic acid
- Molecular formula: C7H9NO3S
- Molecular weight: 187.218 g/mol
- Smiles notation: S(c1cc(c(N)cc1)C)(O)(=O)=O
- InChl: 1S/C7H9NO3S/c1-5-4-6(12(9,10)11)2-3-7(5)8/h2-4H,8H2,1H3,(H,9,10,11)
- Substance type: Organic
- Physical state: Solid
Key result
Atm. press.:
978.5 hPa
Decomposition:
yes
Decomp. temp.:
>= 306.7 - <= 318.2
Sublimation:
no
Remarks on result:
other: the chemical decomposes without melting
Conclusions:
The melting point determination of 3-methylsulphanilic acid (CAS No. 98-33-9) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean decomposition temperature was determined to be 306.7°C -318.2°C at 978.5hPa.
Executive summary:

The melting point determination of 3-methylsulphanilic acid (CAS No. 98-33-9) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean decomposition temperature was  determined to be 306.7°C -318.2°C at 978.5hPa.

Description of key information

The melting point determination of 3-methylsulphanilic acid (CAS No. 98-33-9) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean decomposition temperature was  determined to be 306.7°C -318.2°C at 978.5 hPa.

Key value for chemical safety assessment

Additional information

The melting point determination of 3-methylsulphanilic acid (CAS No. 98-33-9) was done following OECD Guideline 102 and according to the metal block capillary method. The test was conducted in replicates and Mean decomposition temperature was  determined to be 306.7°C -318.2°C at 978.5hPa.