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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Water solubility

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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Type of method:
flask method

Test material

Constituent 1
Reference substance name:
Valproic acid
IUPAC Name:
Valproic acid
Details on test material:
- Supplied by Parke-Davis Pharmaceutical Research Division
- The percentages of active component (valproic acid) were determined by a gas-chromatographic assay for purposes of dose calculation.

Results and discussion

Water solubility
Key result
Water solubility:
1.69 g/L
Conc. based on:
test mat.
Loading of aqueous phase:
5 other: g
Incubation duration:
>= 72 - <= 76 h
Temp.:
20 °C
pH:
4

Applicant's summary and conclusion

Conclusions:
Valproic acid has a water solubility of 1.69 g/L at 20°C.