Disodium 2,2'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(5-methylsulphonate)

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

August 25, 2014

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

GLP compliance:

no

Type of method:

flask method

Water solubility:

ca. 23 290 mg/L

Temp.:

20 °C

pH:

ca. 5.06

Remarks on result:

other: pH on saturated solution is 4.27

Details on results:

Reference solutions were measured in the spectrophotometer in quantitative mode, thus generating a calibration curve. Calibration curve was smooth and linear at every concentration. Considering that preliminary test resulted in an absorbance keeping the same shape like the references, its value was considered for the 24 hours measurement.

Results: 

Test 1 (24 hs)	23.49	g/l
Test 2 (48 hs)	23.35	g/l
Test 3 (96 hs)	23.04	g/l
Average solubility	23.29	g/l
Standard deviation	0.23
pH mother solution	5.06
pH saturated solution	4.27

 

Conclusions:

The substance has been tested for water solubility according to the flask method as reported in the OECD 105 Guideline. Under the reported experimental conditions the water solubility = 23290 mg/l at 20°C.

Executive summary:

Method: 

The substance has been tested for water solubility according to the flask method as reported in the OECD 105 Guideline.

 

Results:

The water solubility of the substance is 23290 mg/l. The substance is very soluble in water.

Description of key information

OECD TG 105 - 23.290 g/l

Key value for chemical safety assessment

Water solubility:

23 290 mg/L

at the temperature of:

20 °C