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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
3.3.2022 - 18.3.2022
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2022

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
GLP compliance:
yes
Type of method:
column elution method

Test material

Constituent 1
Chemical structure
Reference substance name:
1-[(2-chloro-4-nitrophenyl)azo]-2-naphthol
EC Number:
220-562-2
EC Name:
1-[(2-chloro-4-nitrophenyl)azo]-2-naphthol
Cas Number:
2814-77-9
Molecular formula:
C16H10ClN3O3
IUPAC Name:
1-[(2-chloro-4-nitrophenyl)diazenyl]-2-naphthol
Test material form:
solid: particulate/powder
Details on test material:
Batch no. 9A475
Purity >98

Results and discussion

Water solubility
Key result
Water solubility:
> 0 - < 0.1 mg/L
Conc. based on:
test mat.
Temp.:
20 °C
pH:
> 6.09 - < 6.47

Applicant's summary and conclusion

Conclusions:
The water solubility of the test item, Pigment Red 4, established by the column elution method (< 0.1mg/L) is under limit of quantification of used analytical method (LOQ = 0.1 mg/L).