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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:
November 16 – December 11, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes
Type of method:
capillary method
Specific details on test material used for the study:
Composition: Benzenesulfonic acid, 2,4,5-trichloro-, sodium salt – 100%
CAS# 53423-65-7
EC# 258-548-3
Physical Description: White powder
Stability: Test substance was expected to be stable for the duration of testing.
Expiration Date: December 31, 2018
Key result
Melting / freezing pt.:
> 300 °C

Replicate #

Melting Ranges Observed (°C)

Melting Point Observed (°C)

Initial

Final

Individual

Mean

1

>300.0

>300.0

>300.0

>300.0 

2

>300.0

>300.0

>300.0

Conclusions:
The melting point of the test substance >300°C.
Executive summary:

In a GLP guideline study, the melting point of the test substance was measured by the capillary technique using the Stuart SMP20 Melting Point Apparatus based on the procedures described in  OPPTS 830.7200, OECD TG 102, and EC method A1. This procedure was repeated with the test substance to obtain two measurements. The temperature during this test reached >300°C. Therefore, the test was stopped and the melting point was reported as greater than the temperature (°C) observed at termination of testing.

Description of key information

The melting point is >300°C.

Key value for chemical safety assessment

Additional information