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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 26, 2011 - March 29, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable study with detailed documentation according to a standard guideline method.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The test item and water were mixed in three different ratios (1:9, 1:1, 9:1) and pH values were measured during a water solubility test.
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,8-diazabicyclo[5.4.0]undec-7-ene
EC Number:
229-713-7
EC Name:
1,8-diazabicyclo[5.4.0]undec-7-ene
Cas Number:
6674-22-2
Molecular formula:
C9H16N2
IUPAC Name:
2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine
Test material form:
other: Liquid
Details on test material:
- Name of test material (as cited in study report): 1,8-Diazabicyclo-5,4,0-undecene-7
- Physical state: Liquid
- Analytical purity: 99.7%
- Lot/batch No.: O 2905
- Storage condition of test material: Ambient temperature

Results and discussion

pH valueopen allclose all
pH value:
12.6
Temp.:
23 °C
Concentration:
10.1 other: g/100g
pH value:
13.9
Temp.:
23 °C
Concentration:
50.1 other: g/100g
pH value:
15.8
Temp.:
23 °C
Concentration:
89.8 other: g/100g

Any other information on results incl. tables

 Weight of the test item [g] Amount of water added [g]  Sample size [g/100]  Ratio  Observation  pH 
 1.01 9.01  10.1  1:9  Clear, colourless and homogeneous mixture  12.6 
 5.04 5.02 50.1  1:1  Clear, colourless and homogeneous mixture  13.9 
 4.49 0.51  89.8  9:1  Clear, colourless and homogeneous slightly viscous mixture  15.8

Applicant's summary and conclusion

Conclusions:
At 23°C the pH of a 10.1 g/100g solution in water was found to be 12.6, the pH of a 50.1 g/100g solution in water was found to be 13.9, the pH of a 89.1 g/100g solution in water was found to be 15.8.
Executive summary:

The test item and water were mixed in three different ratios (1:9, 1:1, 9:1) and pH values were measured during a water solubility test. At 23°C the pH of a 10.1 g/100g solution in water was found to be 12.6, the pH of a 50.1 g/100g solution in water was found to be 13.9, the pH of a 89.1 g/100g solution in water was found to be 15.8.