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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:
17-03-2018 – 17- 03-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The Freezing point determination of Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate was done using crushed ice and salt.
GLP compliance:
not specified
Type of method:
other: standard laboratory method
Specific details on test material used for the study:
- Name of test material: Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate- Molecular formula: C25H28N2O2- Molecular weight: 388.508 g/mole- Smiles : [N+](=C1/C=CC(\C=C1)=C(\c1ccccc1)c1ccc(cc1)N(C)C)(\C)C.C(C)(=O)[O-]- Inchl: 1S/C23H25N2.C2H4O2/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4;1-2(3)4/h5-17H,1-4H3;1H3,(H,3,4)/q+1;/p-1- Substance type: Organic- Physical state: maroon lustrous liquid
Key result
Melting / freezing pt.:
< -9.69 °C
Atm. press.:
976.2 hPa
Remarks on result:
other: other details not available

TEST DESCRIPTION AND RESULT

Method Details

Observations

Remarks if, any

Method

Freezing Temperature Method

-

 

Principle of Freezing point test

The freezing point of a pure sample is the temperature at which transition from liquid to solid state takes place at atmospheric pressure.

-

Quantity of test item used

g

1 ml

Type of cooling bath used

 

Cold Water Crushed Ice Crushed Ice-Salt Dry Ice

Other (specify)

 

 

Crushed Ice- Salt

Type and model no. of temperature sensor used

 

Glass thermometer Thermocouple Thermistor

Other (specify)

Thermistor

Atmospheric pressure

hPa

976.2 hPa

Freezing point

°C

°C

less than -9.69 °C

 

Conclusions:
The Freezing point of Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate was determined using freezing temperature method. No freezing was observed up to -9.69 °C.
Executive summary:

The Freezing point determination of Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate was done using crushed ice and salt. No freezing was observed up to -9.69°C. Hence, the freezing point was inferred to be less than -9.69 °C at 976.2 hPa.

Description of key information

The Freezing point of Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate was determined using freezing temperature method. No freezing was observed up to -9.69 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-9.69 °C

Additional information

The Freezing point determination of Reaction mass of Methanaminium, N-​[4-​[[4-​(dimethylamino)​phenyl]​phenylmethylene]​-​2,​5-​cyclohexadien-​1-​ylidene]​-​N-​methyl-​ & acetate was done using crushed ice and salt. No freezing was observed up to -9.69°C. Hence, the freezing point was inferred to be less than -9.69 °C at 976.2 hPa.