Aluminium triethanolate

Water solubility

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Water solubility:

< 0.018 mg/L

Conc. based on:

element

Remarks:

Aluminium

Loading of aqueous phase:

1 000 mg/L

Incubation duration:

>= 24 - <= 72 h

Temp.:

20 °C

pH:

>= 5.3 - <= 5.4

Details on results:

The test item is considered to readily hydrolyse to aluminium hydroxide/oxide and ethanol, thus it was not possible to determine the solubility of the test item in the original state.

The aluminium and ethanol concentrations in water were measured to provide an assessment of water solubility. The solubility of the aluminium constituent has been reported. Ethanol is known to be fully miscible with water.

For additional information, the ethanol content was determined using gas chromatography with flame ionization detection and an external standard technique.

Aluminium concentrations determined:

Sample number	Time shaken at ~ 30°C (hours)	Aluminium concentration (mg/L)	Mean aluminium concentration (mg/L)	Solution pH
1A	24	0.0182	0.018	5.4
1B	24	0.0169
2A	48	0.0180	0.018	5.4
2B	48	0.0181
3A	72	0.00505	0.0052	5.3
3B	72	0.00543

Concentration range : 0.0052 to 0.018 mg/L aluminium

Overall result: Less than 0.018 mg/L aluminium at 20.0 ± 0.5 ºC

LOQ: 5 x 10-3 mg /L aluminium (lowest acceptable standard)

Ethanol concentrations

Sample number	Time shaken at ~ 30°C (hours)	Ethanol concentration (mg/L)
1	24	785
2	48	778
3	72	770

Mean ethanol concentration: 778 mg/L

The theoretical amount of ethanol in a nominal 1000 mg/L sample is 852 mg/L.

Conclusions:

The water solubility of the test item (as aluminium) has been determined to be less than 0.018 mg/L of solution at 20°C.

Reference 2

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Justification for type of information:

Additional information on the water solubility of ethanol which is considered to be a degradation product of the substance in water taken from reliable handbook data.

Qualifier:

no guideline followed

Principles of method if other than guideline:

Data from collection of reliable, peer reviewed handbook data.

GLP compliance:

no

Type of method:

other: Unknown

Water solubility:

789 g/L

Temp.:

20 °C

pH:

7

Remarks on result:

completely miscible

The temperature and pH are nominal values which are not quoted in data sources. The ethanol solubility value quoted is the nominal equivalent value to the density which in this case represents full miscibility with water.

Ethanol is often described as infinitely soluble in water.

Conclusions:

Ethanol is fully miscible in water.

Description of key information

The water solubility of the test item (as aluminium) has been determined to be less than 0.018 mg/L of solution at 20°C. The key value is considered to be based on aluminium. Ethanol which is an expected hydrolysis product of the substance is considered fully miscible in water.

Key value for chemical safety assessment

Water solubility:

0.018 mg/L

at the temperature of:

20 °C