Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex

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:

16-03-2017 – 16-03-2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result performed using standard OECD test guidelines

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Principles of method if other than guideline:

The melting point determination of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex was done as per the test guideline OECD 102, by Capillary/metal block method.

GLP compliance:

not specified

Type of method:

other: Capillary/metal block method

Specific details on test material used for the study:

- Name of test material: Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex
- IUPAC name: aluminum tris(4-{[3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzenesulfonate)
- Molecular formula: C48H33AlN12O27S6
- Molecular weight: 1429.19 g/mole
- Smiles : C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)O)C(=O)O)S(=O)(=O)[O-].[Al+3]
- Inchl: 1S/3C16H12N4O9S2.Al/c3*21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;/h3*1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29);/q;;;+3/p-3
- Substance type: Organic
- Physical state: Solid Red powder

Key result

Atm. press.:

976.8 hPa

Decomposition:

yes

Decomp. temp.:

>= 365.5 - <= 370 °C

Sublimation:

no

Remarks on result:

other: Capillary/metal block method

TEST DESCRIPTION AND RESULT

Method Details		Observations	Remarks if, any
Guideline	OECD 102	-
Method	Capillary/metal block	-
Principle of method	The temperature at which a solid becomes a liquid at standard atmospheric pressure	-
Grinding of Test item done		Not required
Atmospheric pressure	hPa	976.8 hPa
Decomposition	Decomposition temperature (°C), if applicable	Yes
Sublimation	Sublimation temperature(°C), if applicable	No
Decomposition temperature range	°C	365.5 - 370 °C

Conclusions:

The decomposition temperature range of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined in the range of 365.5 - 370°C at 976.8 hPa.

Executive summary:

The melting point determination of Test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The decomposition temperature range was determined to be 365.5 - 370°C at 976.8 hPa.

Description of key information

The decomposition temperature range of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined in the range of 365.5 - 370°C at 976.8 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

370 °C

Additional information

The melting point determination of Test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block. The decomposition temperature range was determined to be 365.5 - 370°C at 976.8 hPa.