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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conclusive study conducted under GLP; Relevant and adequate for this endpoint
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:
according to guideline
Guideline:
other: OECD TG 105 (1995) and EU A.6 (Commission Regulation (EC) No 440/2008)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Statement of compliance in accordance with Directive 2004/9/EC, Department of Health of the Government of the U.K., 12 September 2014, inspection date 12 to 14 March 2014

Test material

Constituent 1
Reference substance name:
Automatically generated during migration to IUCLID 6, no data available
IUPAC Name:
Automatically generated during migration to IUCLID 6, no data available
Test material form:
other: Light brown solid

Results and discussion

pH valueopen allclose all
pH value:
>= 3.5 - <= 3.8
Temp.:
20 °C
Concentration:
0.1 g/L
Remarks on result:
other: Loading rate exceeding solubility
pH value:
>= 2.8 - <= 3.1
Temp.:
20 °C
Concentration:
1 g/L
Remarks on result:
other: Loading rate exceeding solubility
pH value:
>= 2.5 - <= 3.5
Temp.:
20 °C
Concentration:
10 g/L
Remarks on result:
other: Loading rate exceeding solubility

Applicant's summary and conclusion

Conclusions:
Filtrated loadings of 0.1 to 10 g/L showed pH 2.5 to 3.8.
Executive summary:

In a water solubility study the pH was found to range from 3.5 to 3.8, from 2.8 to 3.1 and from 2.5 to 3.5 at loadings of 0.10, 1 and 10 g/L, respectively. These loadings seemingly exceed the water solubility.