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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 Feb 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data from analytical test report

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Data from analytical test report
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, reduced, oxidized, potassium sodium salts
EC Number:
290-714-0
EC Name:
Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-nitro-, reaction products with 4-[(4-aminophenyl)azo]benzenesulfonic acid, reduced, oxidized, potassium sodium salts
Cas Number:
90218-39-6
Molecular formula:
C38H24N8Na4O12S4
IUPAC Name:
tetrasodium 2-[(1E)-2-{2-sulfonato-4-[(1E)-2-{4-[(1E)-2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl]phenyl}ethenyl]-5-[(1E)-2-{4-[(1E)-2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl]benzene-1-sulfonate
Test material form:
solid

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odour
Key result
Form:
solid: particulate/powder
Colour:
violet
Substance type:
organic

Applicant's summary and conclusion

Conclusions:
The substance is described as violet solid.