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

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

key study

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

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)

Principles of method if other than guideline:

The pH of Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1Hpyrazole-3-carboxylic acid complex (CAS No. 12225-21-7) was determined as per test guideline OECD 122. The mean pH of the test dispersionwas determined with the help of digital pH meter.

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

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

EC Number:

235-428-9

EC Name:

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

Cas Number:

12225-21-7

Molecular formula:

C48H33AlN12O27S6

IUPAC Name:

aluminum tris(4-{[3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzenesulfonate)

Test material form:

solid: particulate/powder

Details on test material:

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 appearance : Yellow to greenish-yellow powder.
- Purity as per Certificate of Analysis : 40.79%
- Lot No. : FG/16-17/0427
- Manufactured date : 19 May 2016
- Expiry Date : Shelf life of 8 years
- pH : 3.98 at 26.8°C
- Density : 0.283 g/cm3 at 26.8°C
- Storage conditions : Ambient (+15 to +25°C)
- SAFETY PRECAUTIONS: Gloves, cap and face mask were used in addition to protective body garments and shoes, to ensure adequate personal health and safety and to avoid inhalation and skin contact with the test item.

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

Reagents

Reagent:

water

Results and discussion

pH value

Key result

pH value:

3.98

Temp.:

30 °C

Remarks on result:

other: pH of 1% w/v dispersion of the test item

Any other information on results incl. tables

TEST DESCRIPTION AND RESULT

Method Details		Observations	Remarks if, any
Guideline	OECD 122
Method	Digital pH meter
Principle of Method	The mean pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system
Temperature of 1% w/v test emulsion		30°C
mean pH (RESULT)		3.98
Inference	1. Acidic 2. Basic 3. Neutral	Acidic

Applicant's summary and conclusion

Conclusions:

The pH of 1% w/v dispersion of the test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid complex (CAS No12225-21-7) was 3.98 at 30 °C.

Executive summary:

The pH determination of test item Aluminium, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1Hpyrazole-3-carboxylic acid complex (CAS No. 12225-21-7 ) was done as per the test guideline OECD 122.

The mean pH of 1% w/v dispersion of the test item was determined with the help of digital pH meter. The mean pH was determined to be 3.98 at 30 °C.