Phosphonium, tetraphenyl-, salt with 4,4'-sulfonylbis[phenol], compd. with 4,4'-sulfonylbis[phenol] (2:2:1)

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Testing was conducted between 17 October 2003 and 03 November 2003.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Specific details on test material used for the study:

Sponsor's identification SBCAT-03
Description white powder
Lot number UK030622B
Date received 09 October 2003
Storage conditions room temperature in the dark

Data relating to the identity, purity and stability of the test material are the responsibility of the
Sponsor.

The following compositional information was supplied by the Sponsor:

The test material is a mixture of 4,4'-sulfonylbisphenol, partially salted with tetraphenyl
phosphonium ions.

Due to the absence of a suitable analytical method to simultaneously quantify all components,
separate analytical methods have been used to monitor the tetraphenyl phosphonium ions and the 4,4' -sulfonylbisphenol content of the test material.

Key result

Water solubility:

>= 0.095 - <= 0.222 g/L

Conc. based on:

test mat.

Loading of aqueous phase:

0.01 g/L

Incubation duration:

>= 24 h

Temp.:

30 °C

pH:

>= 8.2 - <= 8.4

Details on results:

Results
Preliminary test
The preliminary estimate of water solubility was 0.225 g/1.
Definitive test
The mean peak areas relating to the standard and sample solutions are shown in "Any other information on results".

The treatment and final solution pH for each test material sample solution are shown in "Any other information on results".

The concentration (g/l) of test material in the sample solutions is shown in "Any other information on results".

Validation
The linearity of the detector response with respect to concentration was assessed over a nominal
concentration range of 0 to 200 mg/I and 0 to 100 mg/I for the tetraphenyl phosphonium ion and
4,4'-sulfonylbisphenol analytical methods respectively. These were satisfactory with correlation
coefficients of 0.999 and 1.000 being obtained.

Tetraphenyl phosphonium ion -Mean peak areas relating to the standard and sample solutions

 

Solution	Mean Peak Area
Standard 40.3 mg/l	2.232 x 10^3
Standard 40.4 mg/l	2.216 x 10^3
Sample 1A	6.218 x 10^3
Sample 1B	6.125 x 10^3
Sample 2A	6.043 x 10^3
Sample 2B	6.050 x 10^3
Sample 3A	6.025 x 10^3
Sample 3B	6.129 x 10^3

4,4' -sulfonylbisphenol - Mean peak areas relating to the standard and sample solutions

 

Solution	Mean Peak Area
Standard 40.0 mg/l	1.941 x 10^3
Standard 42.7 mg/l	2.074 x 10^3
Sample 1A	2.333 x 10^3
Sample 1B	2.339 x 10^3
Sample 2A	2.168 x 10^3
Sample 2B	2.154 x 10^3
Sample 3A	2.465 x 10^3
Sample 3B	2.425 x 10^3

 

Sample Number	Time Shaken at ~30°C (hours)	Time equilibrated at 20°C (hours)	Solution pH
1	24	24	8.4
2	48	24	8.4
3	72	24	8.2

Sample Number	Concentration (g/l)
	Monitoring Tertaphenyl Phosphonium Ion	Monitoring 4-4’-sulfonylbisphenol
1	0.224	9.62 x 10^-2
2	0.220	8.90 x 10^-2
3	0.221	0.101
Mean	0.222	9.54 x 10^-2
Range	0.220 to 0.224	8.90 x 10^-2to 0.101

Conclusions:

The water solubility of the test material has been determined to be equivalent to 0.222 g/1 of test
material in solution at 20.0 ± 0.5 °C when monitoring the tetraphenyl phosphonium ion, and
equivalent to 9.54 x 10-2 g/1 of test material in solution at 20.0 ± 0.5 °C when monitoring the
4,4'-sulfonylbisphenol content of the test material.

Executive summary:

Water Solubility (Tetraphenyl phosplwnium ion). Equivalent to 0.222 g/1 of test material in solution at 20.0 ± 0.5 °C, using the flask method, Method A6 of Commission Directive 92/69/EEC and Method 830.7840 of the OPPTS Guidelines.

Water Solubility (4,4'-sulfonylbisphenol). Equivalent to 9.54 x 10·2 g/1 oftest material in solution at 20.0 ± 0.5 ° C, using the flask method, Method A6 of Commission Directive 92/69/EEC and Method 830.7840 of the OPPTS Guidelines.

Description of key information

The water solubility of the test material has been determined to be equivalent to 0.222 g/1 of test material in solution at 20.0 ± 0.5°C when monitoring the tetraphenyl phosphonium ion, and equivalent to 9.54 x 10-2 g/1 of test material in solution at 20.0 ± 0.5°C when monitoring the 4,4'-sulfonylbisphenol content of the test material

Key value for chemical safety assessment

Water solubility:

0.222 g/L

at the temperature of:

20 °C