2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium acetate

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:

12-12-2017 – 12- 12-2017

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 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium acetate(CAS No. 84051-
87-6) was done using crushed ice and salt. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath.

GLP compliance:

no

Type of method:

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

Specific details on test material used for the study:

- Name of test material: 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium acetate
- IUPAC name: 2-[(E)-2-{4-[ethyl(2-hydroxyethyl)amino]phenyl}diazen-1-yl]-6-methoxy-3-methyl-1,3-benzothiazol-3-ium acetate
- Molecular formula: C21H26N4O4S
- Molecular weight: 430.5264 g/mole
- Smiles : CCN(CCO)c1ccc(cc1)/N=N/c2[n+](c3ccc(cc3s2)OC)C.CC(=O)[O-]
- Inchl: 1S/C19H23N4O2S.C2H4O2/c1-4-23(11-12-24)15-7-5-14(6-8-15)20-21-19-22(2)17-10-9-16(25-3)13-18(17)26-19;1-2(3)4/h5-10,13,
24H,4,11-12H2,1-3H3;1H3,(H,3,4)/q+1;/p-1
- Substance type: Organic
- Physical state: Liquid

Key result

Melting / freezing pt.:

< -10.4 °C

Atm. press.:

977.5 hPa

Decomposition:

no

Sublimation:

no

Remarks on result:

other: no other details mentioned

Observation Table & Result :

Method Details		Observations
Guideline	-
Method	Freezing Temperature Method
Principle of method	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	ml/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)	Glass thermometer
Atmospheric pressure	hPa	977.5 hPa
Freezing point °C	°C	less than -10.4°C

Conclusions:

The Freezing point determination of 2 -[[4 -[ethyl(2 -hydroxyethyl)amino]phenyl]azo]-6 -methoxy-3 -methylbenzothiazolium acetate(CAS No. 84051-87-6) was done using crushed ice and salt. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath. The freezing point was determine to be less than -10.4°C at 977.5 hPa.

Executive summary:

The Freezing point determination of 2 -[[4 -[ethyl(2 -hydroxyethyl)amino]phenyl]azo]-6 -methoxy-3 -methylbenzothiazolium acetate(CAS No. 84051-87-6) was done using crushed ice and salt. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath. The freezing point was determine to be less than -10.4°C at 977.5 hPa.

Description of key information

The Freezing point determination of 2 -[[4 -[ethyl(2 -hydroxyethyl)amino]phenyl]azo]-6 -methoxy-3 -methylbenzothiazolium acetate(CAS No. 84051-87-6) was done using crushed ice and salt. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath. The freezing point was determine to be less than -10.4°C at 977.5 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

-10.4 °C

Additional information

The Freezing point determination of 2 -[[4 -[ethyl(2 -hydroxyethyl)amino]phenyl]azo]-6 -methoxy-3 -methylbenzothiazolium acetate(CAS No. 84051-87-6) was done using crushed ice and salt. The determination was done on the basis of cooling curve (time vs temperature) obtained when the test item was placed in the cooling bath. The freezing point was determine to be less than -10.4°C at 977.5 hPa.