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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
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 was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.
GLP compliance:
no
Type of method:
capillary method
Specific details on test material used for the study:
- Name of test material : 5-methoxy-1,3-dihydro-2H-benzimidazole-2-thione
- Molecular formula : C8H8N2OS
- Molecular weight : 180.2302 g/mol
- Smiles notation : COc1ccc2c(c1)nc([nH]2)S
- InChl : 1S/C8H8N2OS/c1-11-5-2-3-6-7(4-5)10-8(12)9-6/h2-4H,1H3,(H2,9,10,12)
- Substance type : Organic
- Physical state : Solid
Key result
Melting / freezing pt.:
>= 255.3 - <= 259.3 °C
Atm. press.:
979 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

TEST DESCRIPTION AND RESULTS

Method Details

Observations

Remarks if, any

Guideline

OECD 102

-

 

 

Method

Capillary/metal block

-

Principle of method

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

-

Grinding of Test item done

 

 

Yes

 

Atmospheric pressure

(in hPa)

 

 

979.0 hPa

Decomposition

 

Decomposition temperature(°C), if applicable

 

No

Sublimation

Sublimation temperature (°C), if applicable

 

 

No

Mean Melting point (°C)

(RESULT)

 

-----

Melting point range (°C), if applicable

 

255.3 °C -259.3 °C

Conclusions:
The melting point determination of Test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The melting point range was determine to be 255.3 °C - 259.3 °C at 979.0 hPa.
Executive summary:

The melting point determination of Test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The melting point range was determine to be 255.3 °C - 259.3 °C at 979.0 hPa.

Description of key information

The melting point determination of Test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The melting point range was determine to be 255.3 °C - 259.3 °C at 979.0 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
255.3 °C

Additional information

The melting point determination of Test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The melting point range was determine to be 255.3 °C - 259.3 °C at 979.0 hPa.

From other reliable sources & authoritative databases melting point of test chemical is determine to be in the range 252-264 °C.