Hydrogen [4-[4-(dimethylamino)-α-(2-hydroxy-3,6-disulphonato-1-naphthyl)benzylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium, monosodium salt

Water solubility

Link to relevant study record(s)

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

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.