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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:
07-10-2017 – 07-10-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Principles of method if other than guideline:
The melting point determination of Test item Bis(4-hydroxy-N-methylanilinium) sulphate (CAS No. 55-55-0) was done as per the test guideline OECD 102 via capillary/metal block method.
GLP compliance:
not specified
Type of method:
other: no data
Specific details on test material used for the study:
- Name of test material: p-Methylaminophenol sulfate- IUPAC name: Bis(4-hydroxy-N-methylanilinium) sulphate- Molecular formula: C14H20N2O6S- Molecular weight: 344.386 g/mole- Smiles:CNc1ccc(cc1)O.CNc1ccc(cc1)O.OS(=O)(=O)O- Inchl: 1S/2C7H9NO.H2O4S/c2*1-8-6-2-4-7(9)5-3-6;1-5(2,3)4/h2*2-5,8-9H,1H3;(H2,1,2,3,4)- Substance type: Organic- Physical state: Solid crystalline (off white - white)
Key result
Melting / freezing pt.:
>= 271.6 - <= 275.1 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: by capillary/metal block method.

TEST DESCRIPTION AND RESULT

 

Method Details

Observations

Remarks if, any

Guideline

OECD 102

-

 

Method

Capillary/metal block

-

Principle of method

The temperature at whicha solid becomes a liquid at standard atmospheric pressure

-

Grinding of Test item done

 

Not required

Atmospheric pressure

hPa

972.1hPa

Decomposition

Decomposition temperature(°C), if applicable

No

Sublimation

Sublimation temperature(°C), if applicable

No

Mean melting temperature range

°C

271.6-275.1°C

Conclusions:
The Mean melting temperature range of Bis(4-hydroxy-N-methylanilinium) sulphate (CAS No. 55-55-0) was found be 271.6-275.1°C at 972.1hPa.
Executive summary:

The melting point determination of Bis(4-hydroxy-N-methylanilinium) sulphate (CAS No. 55-55-0) 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 found to be 271.6-275.1°C at 972.1hPa.

Description of key information

The Mean melting temperature range of Bis(4-hydroxy-N-methylanilinium) sulphate (CAS No. 55-55-0) was found be 271.6 - 275.1°C at 972.1hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
271.6 °C

Additional information

The melting point determination of Bis(4-hydroxy-N-methylanilinium) sulphate (CAS No. 55-55-0) 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 found to be 271.6-275.1°C at 972.1hPa.

Other supporting studies from handbooks authoritative databases, also supported the selected key study and exhibited the melting point of Bis(4-hydroxy-N-methylanilinium) sulphate at 260 °C (decomp), 259 °C and 250-260 °C respectively.