hydronium;iron(3+);hexahydroxide;disulfate

pH

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

Test material information

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 value

pH value 1

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

pH value:

>= 2.8 - <= 3.1

Temp.:

20 °C

Concentration:

1 g/L

Remarks on result:

other: Loading rate exceeding solubility

pH value 3

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.