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Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
data is from experimental reports
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Principles of method if other than guideline:
The water solubility determination of test item Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS No. 3087-16-9) was done as per the OECD guideline 105 and by spectrophotometric analytical method as per OECD 101.
GLP compliance:
not specified
Type of method:
flask method
Specific details on test material used for the study:
- Name of test material (as cited in study report): Hydrogen [4-[4-(dimethylamino)-alpha-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt
- Molecular formula : C27H26N2O7S2.Na
- Molecular weight: 576.623 g/mol
- Substance type: Organic
- Physical state: Solid
Key result
Water solubility:
492 554 mg/L
Conc. based on:
test mat.
Temp.:
28 °C
Remarks on result:
other: No additional details mentioned

Sample Stirring time (hours)

Concentration obtained on the basis of standard curve (mg/l)

Dilution factor

Solubility value obtained (mg/l)

24

-

-

-

48

5.0123

40000

200852

72

9.8032

80000

784256

Considering the water solubility for 48 hrs and 72 hrs the mean water solubility was calculated as follows:

Mean water solubility value for 48 hour run sample + 72 hour run sample

=(200852+784256)/2

=492554 mg/L

Conclusions:
The water solubility determination of test item Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt;CAS No.3087-16-9 was done by spectrophotometric method. The water solubility was determined to be 492554 mg/L at 28°C.
Executive summary:

The water solubility determination of test item Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS No. 3087-16-9) was done as per the OECD guideline 105 and by spectrophotometric analytical method as per OECD 101. The solubility of Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS: 3087-16-9 ) in water was determined to be 492554 mg/L at 28°C.

Description of key information

The water solubility determination of test item Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS No. 3087-16-9) was done as per the OECD guideline 105 and by spectrophotometric analytical method as per OECD 101. The solubility of Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS: 3087-16-9 ) in water was determined to be 492554 mg/L at 28°C.

Key value for chemical safety assessment

Water solubility:
492 554 mg/L
at the temperature of:
28 °C

Additional information

The water solubility determination of test item Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS No. 3087-16-9) was done as per the OECD guideline 105 and by spectrophotometric analytical method as per OECD 101. The solubility of Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt (CAS: 3087-16-9 ) in water was determined to be 492554 mg/L at 28°C.

Based on the value, Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt can be considered to be highly soluble in water.