Registration Dossier

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 November - 2 December, 2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2016

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The method used is based on the filtration of the test substance through a Gooch crucible pore size number 5. The water solubility is determined by the weight difference.
Type of method:
other: Determination by weight difference

Test material

Constituent 1
Reference substance name:
1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives
EC Number:
235-521-4
EC Name:
1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives
Cas Number:
12262-32-7
Molecular formula:
not applicable
IUPAC Name:
Reaction product of 1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)- with sodium polysulfide, leuco derivatives
Test material form:
solid

Results and discussion

Water solubility
Key result
Water solubility:
ca. 15.6 mg/L
Temp.:
25 °C
pH:
ca. 5

Applicant's summary and conclusion

Conclusions:
The water solubility of the substance Leuco Sulphur Green 2 was determined to be 15.6 mg/L under the test conditions