Hydrochloric acid, reaction products with aniline and nitrobenzene, sulfonated, sodium salts

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

key study

Study period:

01/2012

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Principles of method if other than guideline:

pH measurement in aqueous solution

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Test material

Test material information

Constituent 1

Reference substance name:

Hydrochloric acid, reaction products with aniline and nitrobenzene, sulfonated, sodium salts

EC Number:

291-454-0

EC Name:

Hydrochloric acid, reaction products with aniline and nitrobenzene, sulfonated, sodium salts

Cas Number:

90411-76-0

Molecular formula:

Mixture of components, no definitve molecular formula existing.

IUPAC Name:

Complex mixture of phenazine dyes - IUPAC name not available

Test material form:

solid: particulate/powder

Details on test material:

- Purity: 80.6 % (according to the sponsor)

Results and discussion

pH value

pH value 1

pH value:

10.3

Remarks on result:

other: 0.5 g substance in 49.51 g water at room temperature

pH value 2

pH value:

10.4

Remarks on result:

other: 1.0 g substance in 9.01 g water at room temperature

Any other information on results incl. tables

The substance was stirred for 30 min at room temperature with a magnetic stirrer. The concentration ratio was once 1:99 and once 1:9 (substance / water).

Applicant's summary and conclusion

Conclusions:

The measured pH value of the substance at different concentrations in aqueous solution was in the range of 10.3 - 10.4.

Executive summary:

The substance was stirred for 30 min at room temperature with a magnetic stirrer. The concentration ratios were 1:99 and 1:9 (substance / water). The pH value was in the range of 10.3 - 10.4 in the aqueous solution.