Reaction mass of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine and N-(2-ethylhexyl)-1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]naphthalen-1-amine

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

31-08-2017 – 31- 08-2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

comparable to guideline study

Justification for type of information:

Experimental test result performed using standard OECD test guidelines.

Qualifier:

according to guideline

Guideline:

other: as mentioned below

Principles of method if other than guideline:

The Freezing point determination of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No.93964-07-9) was done using crushed ice and salt.

GLP compliance:

not specified

Type of method:

other: crushed ice and salt method (Freezing Temperature Method)

Specific details on test material used for the study:

- Name of the test material: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Regulatory name: N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine
- Molecular formula: C32H37N5
- Molecular weight: 491.6793 g/mol
- Smiles: CCCCC(CC)CNc1ccc2ccccc2c1/N=N/c3ccc(cc3C)/N=N/c4ccc(cc4)C
- InChI: 1S/C32H37N5/c1-5-7-10-25(6-2)22-33-31-19-15-26-11-8-9-12-29(26)32(31)37-36-30-20-18-28(21-24(30)4)35-34-27-16-13-23(3)14-17-27/h8-9,11-21,25,33H,5-7,10,22H2,1-4H3/b35-34+,37-36+
- Substance type: Organic
Physical form: Dark red clear liquid

Key result

Melting / freezing pt.:

< -11.84 °C

Atm. press.:

972.4 hPa

Remarks on result:

other: no other details mentioned

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	972.4 hPa
Freezing point °C	°C	less than -11.84 °C

 

Conclusions:

The Freezing point of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine; CAS No. 93964-07-9 was determined using
freezing temperature method. No freezing was observed up to less than -11.84 °C.

Executive summary:

The Freezing point determination of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was done using crushed ice and salt. No freezing was observed up to -11.84°C. Hence, the freezing point was inferred to be less than -11.84 °C at 972.4 hPa.

Description of key information

The Freezing point of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine; CAS No. 93964-07-9 was determined using freezing temperature method. No freezing was observed up to less than -11.84 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-11.84 °C

Additional information

The Freezing point determination of N-(2-ethylhexyl)-1-[[2-methyl-4-[(4-methylphenyl)azo]phenyl]azo]naphthalen-2-amine (CAS No. 93964-07-9) was done using crushed ice and salt. No freezing was observed up to -11.84°C. Hence, the freezing point was inferred to be less than -11.84 °C at 972.4 hPa.