Sulphophthalic acid derivatives reaction products of fatty alcohol C12-C14 and sodium hydroxide

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

October from 08 to 12, 2018

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Reason / purpose for cross-reference:

reference to other study

Remarks:

validated analytical method

Guideline:

OECD Guideline 105 (Water Solubility)

Version / remarks:

adopted July 27, 1995

Guideline:

EU Method A.6 (Water Solubility)

Guideline:

EPA OPPTS 830.7840 (Water Solubility)

Principles of method if other than guideline:

The study was conducted following the principles indicated by the abovementioned internationally accepted guidelines and recommendationss.
A miscibility test was performed.

GLP compliance:

yes (incl. QA statement)

Type of method:

other: miscibility test

pH:

ca. 6

Remarks on result:

completely miscible

Remarks:

at 20.5-23.2 °C

Details on results:

The test resulted to be miscible with water at room temperature.

Water miscibility test

Test item (ml)	Ultra-pure water (ml)	Observation	pH value
90	10	clear, homogeneous single-phase liquid	6.03
10	90	clear, homogeneous single-phase liquid	6.00
50	50	clear, homogeneous single-phase liquid	5.91

Conclusions:

The test resulted to be miscible with water at room temperature and pH ca 6.

Executive summary:

The water solubility of the test item was ivestigated following the indications and principles outlined into the OECD guideline 105.

In the course of the preliminary solubility tests the test item was mixed with ultrapure water in 2:1 test item/water ratio. After shaking homogeneous single-phase samples could be observed and no saturated solution could be prepared. Thus, additional pre-tests were also prepared: the test item was mixed with water in 1:9, 9:1 and 1:1 ratios. After shaking homogeneous single-phase samples could be observed, showing that the test item is miscible with water. Based on these observations, a miscibility test was performed.

The miscibility of the test item with water was tested at three different ratios (i.e. test item : water at 1 : 9, 9 : 1, 1: 1), at ambient temperature. Miscibility was checked visually after vigorous shaking.

The test resulted to be miscible with water at room temperature.

Conclusion

The test resulted to be miscible with water at room temperature and pH ca 6.

Description of key information

The test resulted to be miscible with water at room temperature and pH ca 6.

Key value for chemical safety assessment

Water solubility:

100 000 mg/L

at the temperature of:

20 °C

Additional information

Miscibility test