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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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