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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 March 1996 to 13 March 1996
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1996
Report date:
1996

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
static 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

Vapour pressure
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
26.8 Pa
Remarks on result:
other: +/-2.7 Pa

Applicant's summary and conclusion

Conclusions:
The value of the vapour pressure of Pacified Reactive Black 31 at 20°C wasfound to be :

p (20°C) = 26.8 +/- 2.7 Pa = 0.20 +/- 0.02 mm Hg
Executive summary:

The determination of the vapour pressure was based on the following guidelines:

European Economic community (EEC) EEC directive 92/69 EEC, Part A, Methods for the determination of physico-chemical properties, A4 "Vapour Pressure", EEC Publication No, L383, December 1992.

OECD Guidelines for testing chemicals, Guideline No.104: "Vapour pressure curve", adopted May 12, 1981.

Using hte Static Technique, the value of the vapour pressure of Pacified Reactive Black 31 at 20°C was determined to be :

p (20°C) = 26.8 +/- 2.7 Pa = 0.20 +/- 0.02 mm Hg