reaction mass of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-2H -isothiazol-3-one

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

key study

Study period:

6 Jan 2003 - 29 Sept 2003

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2003

Report date:

2003

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

CIPAC MT 75 (Determination of pH Values)

GLP compliance:

yes

Test material

Test material information

Constituent 1

Details on test material:

10.60% CMIT, 3.60% MIT

Titration of acidity and alkalinity

Details on titrant used:

The experimental method used followed that described in CIPAC MT75. Test substance was dispersed into double distilled water at a rate of 10 g/L (1%) of active ingredient. The pH of this preparation, and the distilled water used to prepare the dilution, were measured with a calibrated pH meter.

Results and discussion

pH value

Key result

pH value:

3.43

Temp.:

20 °C

Concentration:

10 g/L

Any other information on results incl. tables

The diluting water had a pH of 5.81. The three replicate test measurements were 3.41, 3.43 and 3.44, with a mean of 3.43. All measurements were taken at 20.0°C.

Applicant's summary and conclusion

Conclusions:

The diluting water had a pH of 5.81. The three replicate test measurements were 3.41, 3.43 and 3.44, with a mean of 3.43. All measurements were taken at 20.0°C.

Executive summary:

The pH of an aqueous solution of Kathon 886 MW Biocide containing 1% w/v total active ingredient content was measured to be 3.43 (mean of three results), the diluting water had a pH of 5.81.