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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
22nd October to 10th November 2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study following UN guideline, but not conducted according to GLP or equivalent Quality Assurance system (as requested by CLP Regulation).
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other:
Principles of method if other than guideline:
The pH value of a 10% test substance solution.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2,5-Dihydroxy-3,6-dimethyl-3,6-bis(dihydroxyphosphinyl)- 1,4,2,5-dioxadiphosphorinane-2,5-dioxide
EC Number:
921-798-5
Cas Number:
32421-74-2
Molecular formula:
C4H12O12P4
IUPAC Name:
2,5-Dihydroxy-3,6-dimethyl-3,6-bis(dihydroxyphosphinyl)- 1,4,2,5-dioxadiphosphorinane-2,5-dioxide
Test material form:
other: Liquid
Details on test material:
- Name of test material (as cited in study report): ADPA Dimer Acid Solution
- Physical state: Clear colourless liquid

Results and discussion

pH value
pH value:
1.3
Concentration:
100 g/L

Applicant's summary and conclusion

Conclusions:
The pH value of a 10% (w/v) solution of the test substance at room temperature is 1.3.