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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

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