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Diss Factsheets

Physical & Chemical properties

Water solubility

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-11-08 – 2016-11-22
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental result performed using standard methods of analysis
Qualifier:
according to guideline
Guideline:
other: spectrophotometric method
Principles of method if other than guideline:
The water solubility determination of test substance (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylamm- onium chloride was done as per the spectrophotometric method
GLP compliance:
no
Type of method:
other: spectrophotometric method
Specific details on test material used for the study:
- Name of test material:(8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylamm- onium chloride
- Molecular formula: C19H20N5O3Cl
- Molecular weight: 401.852 g/mol
- Smiles notation: [N+](c1cc(\N=N\c2c3cc([N+](C)(C)C)ccc3ccc2O)ccc1N)([O-])=O.[ClH-]
- Substance type: Organic
- Physical state: Solid
Key result
Water solubility:
7 141.2 mg/L
Conc. based on:
test mat.
Temp.:
28 °C
Remarks on result:
other: other details not available

Sample stirring

Concentration obtained on

the basis of standard curve

Dilution factor

Solubility value obtained

(mg/L)

24 hour

18.405 mg/L

400

7362 mg/L

48 hour

17.066 mg/L

400

6826.4 mg/L

72 hour

18.640 mg/L

400

7456 mg/L
Conclusions:
The water solubility determination of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride;CAS No.68391-32-2 was done by spectrophotometric method. The water solubility was determined to be 7141.2 mg/L at 28°C.
Executive summary:

The water solubility determination of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride;CAS No.68391-32-2 was done by spectrophotometric method. The water solubility was determined to be 7141.2 mg/L at 28°C.

Description of key information

The water solubility determination of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride;CAS No.68391-32-2 was done by spectrophotometric method. The water solubility was determined to be 7141.2 mg/L at 28°C.Based on the above value,it can be concluded that the test chemical is very soluble in water

Key value for chemical safety assessment

Water solubility:
7 141.2 mg/L
at the temperature of:
28 °C

Additional information

The water solubility determination of test item [8-[(4-amino-3-nitrophenyl)azo]-7-hydroxy-2-naphthyl]trimethylammonium chloride;CAS No.68391-32-2 was done by spectrophotometric method. The water solubility was determined to be 7141.2 mg/L at 28°C.Based on the above value,it can be concluded that the test chemical is very soluble in water

Other supporting studies from review article also suggests that the water solubility value of chemical (8-((4-Amino-3-nitrophenyl)azo)-7-hydroxy-2-naphthyl)trimethylamm- onium chloride was determined to be in the range of 10000 mg/L to 100000 mg/L at room temperature.

As the data from lab has K1 reliability and the test was performed using standard methods of analysis which has the value of water solubility as 7141.2 mg/L at 28 degree C ,thus considered as key study for the chemical safety assessment