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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is marketed or used in a non solid or granular form
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING

The substance is isolated by spray drying; the particle size is not a function of the chemical but a function of the spray dryer used; a typical particle size distribution for reactive dyes isolated as low dust granules is as follows:
10 % < 123 µm; 25 % < 159 µm; 50 % < 207 µm; 75 % < 266 µm; 90 < 326 µm

Data source

Materials and methods

Test material

Constituent 1
Chemical structure
Reference substance name:
1-3 dihydroxy-2,4bis-(4-(2-sulfooxyethanesulfonyl)-phenylazo) benzene disodium salt
EC Number:
937-924-7
Molecular formula:
C22H20N4Na2O14S4
IUPAC Name:
1-3 dihydroxy-2,4bis-(4-(2-sulfooxyethanesulfonyl)-phenylazo) benzene disodium salt
Test material form:
solid: particulate/powder
Details on test material:
Name Blendazol Orange Blendwell
Batch no. E331
Appearance Orange powder
Composition 1-3 dihydroxy-2,4bis-(4-(2-sulfooxyethanesulfonyl)-phenylazo)benzene disodium salt
Purity 95 % by HPLC
Homogeneity homogeneous
Expiry date 17 Mar. 2019
Storage Room Temperature: (20 ± 5°C); Kept away from humidity
CAS No. unknown
EINECS-No. 937 924-7

Results and discussion

Remarks on result:
other:

Applicant's summary and conclusion

Executive summary:

The substance is isolated by spray drying; the particle size is not a function of the chemical but a function of the spray dryer used; a typical particle size distribution for reactive dyes isolated as low dust granules is as follows:

10 % < 123 µm; 25 % < 159 µm; 50 % < 207 µm; 75 % < 266 µm; 90 < 326 µm