Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
supporting study
Study period:
2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Part of a guideline study with GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
pH determination of an aqueous suspension
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Aspartic acid
EC Number:
200-291-6
EC Name:
Aspartic acid
Cas Number:
56-84-8
Molecular formula:
C4H7NO4
IUPAC Name:
aspartic acid
Test material form:
solid: crystalline
Details on test material:
Supplier: Sponsor.
Batch No.: PRCA 015.
CAS No. 56-84-8.
Appearance: White, crystalline.
Purity: Approx. 99 %.
pH: 2.5 – 3.5 (4 g/L at 20 °C).
Melting range: 265 – 271 °C.
Solubility in water: 5 g/L at 25°C.
Conditions of storage: In the refrigerator, in the dark, may be used under light.
Date of expiry: 31 December 2002.

Results and discussion

pH value
pH value:
3.03
Concentration:
10 g/L
Remarks on result:
other: Suspension at ambient temperature

Applicant's summary and conclusion

Conclusions:
The pH of a 1 % w/v suspension of L-aspartic acid was determined to 3.03.
Executive summary:

The pH of a 1 % w/v suspension of L-aspartic acid was determined to 3.03.