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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

Surface tension

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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
December 1995
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1995

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
ring method

Test material

Constituent 1
Chemical structure
Reference substance name:
A mixture of: disodium 6-[3-carboxy-4,5-dihydro-5-oxo-4-sulfonatophenyl)pyrazolin-4-yl-azo]-3-[2-oxido-4-(ethensulfonyl)-5-methoxyphenylazo]-4-oxidonaphthalene-2-sulfonate copper (II) complex; disodium 6-[3-carboxy-4,5-dihydro-5-oxo-4-sulfonatophenyl)pyrazolin-4-yl-azo]-3-[2-oxido-4-(2-hydroxyethylsulfonyl)-5-methoxyphenylazo]-4-oxidonaphthalene-2-sulfonate copper (II) complex;
EC Number:
423-940-7
EC Name:
A mixture of: disodium 6-[3-carboxy-4,5-dihydro-5-oxo-4-sulfonatophenyl)pyrazolin-4-yl-azo]-3-[2-oxido-4-(ethensulfonyl)-5-methoxyphenylazo]-4-oxidonaphthalene-2-sulfonate copper (II) complex; disodium 6-[3-carboxy-4,5-dihydro-5-oxo-4-sulfonatophenyl)pyrazolin-4-yl-azo]-3-[2-oxido-4-(2-hydroxyethylsulfonyl)-5-methoxyphenylazo]-4-oxidonaphthalene-2-sulfonate copper (II) complex;
Cas Number:
85585-91-7
IUPAC Name:
4-[2-(7-{2-[4-(ethenesulfonyl)-2-hydroxy-5-methoxyphenyl]diazen-1-yl}-8-hydroxy-6-sulfonaphthalen-2-yl)diazen-1-yl]-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid 4-[2-(8-hydroxy-7-{2-[2-hydroxy-4-(2-hydroxyethanesulfonyl)-5-methoxyphenyl]diazen-1-yl}-6-sulfonaphthalen-2-yl)diazen-1-yl]-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid dicopper tetrasodium hydride
Test material form:
solid
Specific details on test material used for the study:
Identification: Pacified Reactive Black 31
Description: Dark blue crystals
Batch: 9T-55
Purity: 89%
Storage: At room temperature in the dark
Stability under storage conditions: Stable

Results and discussion

Surface tension
Key result
Surface tension:
71.6 mN/m
Temp.:
20 °C
Conc.:
1.007 g/L

Applicant's summary and conclusion

Conclusions:
Based on the criteria as outlined in the EEC guideline, it is concluded that Pacified Reactive Black 31 should not be regarded as a surface active material.
Executive summary:

The determination of the surface tension of an aqueous solution of Pacified Reactive Black 31 was based on EEC-Directive 92/69 EEC, A.5 "Surface tension" (1992).

The surface tension of an aqueous solution of Pacified Reactive Black 31 at a concentration of 1.007 g/l was 71.6 mN/m. Temperature of the measurement was 20°C.

Based on the criteria as outlined in the EEC guideline, it is concluded that Pacified Reactive Black 31 should not be regarded as a surface active material.