{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2014

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

no guideline followed

Principles of method if other than guideline:

Spectrometry of the aqueous extract from the test item

GLP compliance:

no

Type of method:

other: spectrometry

Specific details on test material used for the study:

- Lot/batch No.:407940

Key result

Water solubility:

ca. 75 mg/L

Remarks on result:

other: mean value of the 2 tests.

Concentration of the test item in the aqueous extract

	1 g of test item	0.25 g of test item
Filtration	0.45 µm	0.45 µm
Dilution Factor	10	10
Result of the spectrometric analysis   (Spectro DU640 BECKMAN)	DOmeasuredat 425 nm = 0.3412 within the matrix [methanol-water 50/50]	DOmeasuredat 427 nm = 0.3093 within the matrix [methanol-water 50/50]
Calculated Concentration of reference	Concref= 19.48 mg/L	Concref= 19.48 mg/L
DO of reference	DOrefat 426 nm = 0.8381	DOrefat 426 nm = 0.8381
Quantity of MG-F in water	=79 mg/L	=72 mg/L
Mean of the 2 tests	75 mg/L

Conclusions:

The solubilty of the test item in water is 75 mg/L by spectrometry.

Description of key information

Solubility measured by spectrometry

Key value for chemical safety assessment

Water solubility:

75 mg/L

at the temperature of:

22 °C