Reaction products of diazotised 2-amino-5-nitrobenzenesulfonic acid coupled with resorcinol, subsequently coupled with diazotized 2-amino-4-nitro-6-sulfo-phenol, chelated with iron, sodium 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

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

GLP compliance:

no

Type of method:

flask method

Water solubility:

ca. 33.81 g/L

Temp.:

20 °C

pH:

4.91

test 1 (24hs)	33.28 g/l
test 2 (48hs)	32.28 g/l
test 3 (96hs)	35.87 g/l
average solubility	33.81 g/l
standard deviation	1.85
pH mother solution	5.77
pH satured solution	4.91

Conclusions:

Water solubility = 33.81 g/L at 20°C and pH 4.91.

Executive summary:

Method:

The water solubility was determined according to OECD guideline 105 by means of flask method. Reference solutions were measured in the spectrophotometer in quantitative mode, thus generating a calibration curve.

Results:

The water solubility of the tested substance at 20°C is 33.81 g/L and pH 4.91.

Description of key information

OECD TG 105 - 33.81 g/L at 20°C and pH 4.91.

Key value for chemical safety assessment

Water solubility:

33.81 g/L

at the temperature of:

20 °C