Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
review article or handbook
Title:
State of the substance at 20°C and 101,3 kPa
Year:
2012
Bibliographic source:
McGraw-Hill Science & Technology Dictionary: H acid
Report date:
2012

Materials and methods

Principles of method if other than guideline:
Database antry

Test material

Constituent 1
Chemical structure
Reference substance name:
4-amino-5-hydroxynaphthalene-2,7-disulphonic acid
EC Number:
201-975-7
EC Name:
4-amino-5-hydroxynaphthalene-2,7-disulphonic acid
Cas Number:
90-20-0
Molecular formula:
C10H9NO7S2
IUPAC Name:
4-amino-5-hydroxynaphthalene-2,7-disulfonic acid

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odouropen allclose all
Form:
crystalline
Colour:
gray
Odour:
odourless
Substance type:
organic

Applicant's summary and conclusion

Conclusions:
gray powder or crystalline substance