4'-Butyl-4-ethoxy-2,3-difluoro-1,1'-biphenyl

pH

Administrative data

Endpoint:

pH

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2016-10-05 to 2017-01-09

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

CIPAC MT 75 (Determination of pH Values)

Deviations:

no

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

4'-butyl-4-ethoxy-2,3-difluoro-1,1'-biphenyl

EC Number:

695-755-1

Cas Number:

1229661-51-1

Molecular formula:

C18H2F2O

IUPAC Name:

4'-butyl-4-ethoxy-2,3-difluoro-1,1'-biphenyl

Test material form:

solid: particulate/powder

Reagents

Reagent:

water

Results and discussion

pH value

Key result

pH value:

5.8

Temp.:

24 °C

Concentration:

0.1 g/L

Any other information on results incl. tables

An aqueous suspension of the test item with about 1 g of the test item in 100 ml water was prepared for each test. Median values were calculated from unrounded values.

Table 1. pH values of aqueous suspensions containing 0.1 g/L of the test item

Test	A	B	C	blank
Test item / g	1.0029	1.0501	1.0101	-
Demineralized water / mL	100	100	100	100
pH value (after 0 min)	5.87	5.84	5.79	5.66
Temperature / °C (after 0 min)	24.0	24.1	23.9	23.1
pH value (after 1 min)	5.82	5.81	5.79	5.61
Temperature / °C (after 1 min)	24.0	24.1	23.9	23.1

  

A median pH value of 5.8 was measured for the test item in a 0.1 g/L aqueous solution.

Applicant's summary and conclusion

Conclusions:

A pH value of 5.8 was measured for the test item in an aqueous solution (0.1 g/L).

Executive summary:

The pH of the test item was determined in a study conducted according to OECD 122 and CIPAC MT 75. An aqueous suspension of the test item was prepared at room temperature. The solution was shaken for 1 min. The pH value was measured and a second measurement was performed after 1 min. If the pH value changed more than 0.1 pH units during this equilibration time the pH value was measured again after 10 min. Each test was performed thrice. A blank measurement was performed with distilled water. Median values were calculated from unrounded values. A pH value of 5.8 was measured for the test item in an aqueous solution (0.1 g/L).