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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:
2017-03-04 – 2017-03-04
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:
other: as mentioned below
Principles of method if other than guideline:
The Freezing point determination of 9,10-Anthracenedione, 1,4- diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No.97862-23-2) was done using crushed ice and salt.
GLP compliance:
no
Type of method:
other: standard laboratory method
Specific details on test material used for the study:
- IUPAC name: 9,10-Anthracenedione, 1,4-diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs.
- Substance type: Organic
- Physical state: Liquid
Key result
Melting / freezing pt.:
-12.71 °C
Atm. press.:
982.3 hPa
Remarks on result:
other: other details not available

Method Details

Observations

Method

Freezing temperature determination according to Cooling Curve method using MicroLab FS-524

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Principle of Freezing

Point test

The freezing point of a pure sample is

determined by making measurements of the temperature as a function of time while the sample is submerged in a constant temperature bath at a temperature below that of the expected

freezing point of the sample. The data

(Temperature vs. time) is plotted; this plot is known as a cooling curve. The freezing point is the value of temperature in the flat portion of the curve.

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Quantity of test

item used

g

1 ml

Type of cooling bath used

·        

·        

·        

·        

·        

Crushed Ice- Salt

Type and model no. of temperature sensor used

·        

·        

·        

·        

Glass

thermometer

 

Atmospheric pressure

hPa

982.3 hPa

Freezing point °C

°C

less than -12.71 °C

Conclusions:
The Freezing point determination of 9,10-Anthracenedione, 1,4 diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No.97862-23-2) was done using crushed ice and salt. No freezing was observed up to-12.71°C. Hence, the freezing point was inferred to be less than -12.71°C at 982.3 hPa.
Executive summary:

The Freezing point determination of 9,10-Anthracenedione, 1,4 diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No.97862-23-2) was done using crushed ice and salt. No freezing was observed up to-12.71°C. Hence, the freezing point was inferred to be less than -12.71°C at 982.3 hPa.

Description of key information

The Freezing point determination of 9,10-Anthracenedione, 1,4 diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No.97862-23-2) was done using crushed ice and salt. No freezing was observed up to-12.71°C. Hence, the freezing point was inferred to be less than -12.71°C at 982.3 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-12.71 °C

Additional information

The Freezing point determination of 9,10-Anthracenedione, 1,4 diamino-, N,N'-bis(4-C7-17-branched alkylphenyl) derivs. (CAS No.97862-23-2) was done using crushed ice and salt. No freezing was observed up to-12.71°C. Hence, the freezing point was inferred to be less than -12.71°C at 982.3 hPa.