Nonanal

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2010-03-08 to 2010-03-15

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

GLP compliance:

yes

Type of method:

flask method

Specific details on test material used for the study:

- Name of test material (as cited in study report): n-Nonanal; nonyl aldehyde; Pelargonaldehyde
- Substance type: Colourless liquid with a fruity odour
- Physical state: Liquid
- Composition of test material, percentage of components: No data
- Isomers composition: No data
- Purity test date: 2009-11-03
- Batch No: 20091103145756
- Expiration date of the lot/batch: No data
- Stability under test conditions: > 6 months (at room temperature) after receipt at AQura 2009-11-26
- Storage condition of test material: cool; at room temperature; between 0 and 49 °C; dry, handle under N₂

Water solubility:

101 mg/L

Temp.:

20 °C

Remarks on result:

other: Calculated on basis of mean of 120 hr and 168 hr results.

Details on results:

For results tables please see attached supporting information.

Preliminary Test

Pre-sample	Mass of test item (g)	Volume of water (mL)	Visual observation	Approx. conc. of test item (g/L water)
1	0.5065	0.5	not dissolved	[1013]
2	0.5065	1	not dissolved	[507]
3	0.5065	2	not dissolved	[253]
4	0.5065	10	not dissolved	[51]
5	0.5039	100	not dissolved	[5]
6	0.5039	250	not dissolved	2
7	0.5039	500	not dissolved	1
8	0.56	1000	not dissolved	0.6
9	0.07	1000	not dissolved	0.07
10	0.04	1000	dissolved	0.04
11	0.008	1000	dissolved	0.008

NB: Concentration values in brackets are theoretical.

Main Test

Data from both Main test 1 (samples 1-6) and Main Test 2 (samples 7-12) are presented below:

Sample	Mass of test item (mg)	Volume of water (mL)	Shaking time (hr)	Analysed carbon content (mg C/L)	Concentration of test item (mg/L)	Mean value for time (mg/L)	pH value
1	44	100	24	71	94	91	4.5
2	47	100	24	67	88		4.5
3	44	100	48	69	91	93	4.5
4	46	100	48	72	95		4.5
5	41	100	72	80	105	98	4.4
6	44	100	72	69	91		4.5
7	51	100	72	69	91	94	4.4
8	52	100	72	73	96		4.4
9	52	100	120	79	104	100	4.1
10	53	100	120	73	96		4.3
11	52	100	168	77	101	101	4.3
12	52	100	168	77	101		4.4

The value for sample 5 is not an outlier (Dixon test).

Samples 1-6 mean value of 94 mg/L; std. dev. 6 mg/L; rel. std. dev. 6 %.

Samples 9 -12 mean value of 101 mg/L; std. dev. 0.7 mg/L; rel. std. dev 0.7 %.

The first 3 duplicate sets of samples (1-6) showed a slight tendency of increasing concentration values. The second 3 duplicate sets of samples (9-12) also showed a slight tendency of increasing concentration values.

In the case of the last 2 duplicate sets (after 120 hr and 168 hr) there is only a minimal difference of 1 mg/l ≈ 1 % in relation to the final result. In this case it is considered that the plateau for the water solubility is reached. Therefore, the final result is calculated with the mean values derived from the 120 hr and the 168 hr samples. The mean value after 72 hr was not taken into account for the final calculation. From further testing with again prolonged test periods no further information could be expected.

Conclusions:

The author found that the solubility of the test material was 101 mg/L.

Description of key information

Water solubility 101 mg/L at 20 °C (OECD 105)

Key value for chemical safety assessment

Water solubility:

101 mg/L

at the temperature of:

20 °C