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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report date:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
yes
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
5-(dithiolan-3-yl)valeric acid
EC Number:
214-071-2
EC Name:
5-(dithiolan-3-yl)valeric acid
Cas Number:
1077-28-7
Molecular formula:
C8H14O2S2
IUPAC Name:
5-(1,2-dithiolan-3-yl)pentanoic acid
impurity 1
Reference substance name:
unknown
IUPAC Name:
unknown
impurity 2
Chemical structure
Reference substance name:
Water
EC Number:
231-791-2
EC Name:
Water
Cas Number:
7732-18-5
Molecular formula:
H2O
IUPAC Name:
dihydrogen oxide
Test material form:
solid: bulk
Details on test material:
This composition is the usual techical grade of AlzChem AG. It will be used when test substance has this composition (or is very closed) or no specific information is available

Results and discussion

Water solubility
Key result
Water solubility:
ca. 0.87 g/L
Conc. based on:
test mat.
Temp.:
22 °C
pH:
> 3 - <= 3.6

Any other information on results incl. tables

Sample

Result (g/l at 22 °C)

Method

1stsaturated solution

0.87

HPLC

2ndsaturated solution

0.87

HPLC

3rdsaturated solution

0.88

HPLC

Average

0.87

(-)

Applicant's summary and conclusion

Conclusions:
The average water solubility of alpha-Lipoic acid is 0.87 g/L at 22 °C.
Executive summary:

The average water solubility of alpha-Lipoic acid is 0.87 g/L at 22 °C.