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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31 Mar - 03 May 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Food and Consumer Product Safety Authority (VWA), Den Haag, The Netherlands
Type of method:
other: visual observation
Water solubility:
> 500 g/L
Temp.:
20 °C
pH:
12.6

Test 1

1 mL double distilled water was added to 1.02 g of the test substance. The mixture became warm. After stirring for 30 minutes at 20.2 ± 0.6 °C, the mixture was a light yellow gel with the stirring bar fixed in. After 18.8 hours, an extra volume of 9 mL double distilled water was added and an extra stirring bar. After 1 hour stirring at 20.2 ± 0.6 °C, no undissolved test substance was observed (nominal concentration 0.1x10³ g/L). The pH of the water mixture was 11.9.

 

Test 2

1 mL double distilled water was added to 0.53 g of the test substance and stirred for 30 minutes at 20.2 ± 0.6 °C (nominal concentration 0.5x10³ g/L). After the stirring period, the mixture was still clear. The pH of water mixture was 12.6.

 

Test 3

1 mL double distilled water was added to 1.00 g of the test substance (nominal concentration 1.0×10³ g/L). The mixture became warm and was a light yellow viscous liquid. After stirring for 30 minutes at 20.2 ± 0.6 °C, the mixture was a light yellow gel with the stirring bar fixed in.

 

Conclusion

After the stirring period, the test sample from test 2 was clear and no undissolved test substance was observed. From this, it was concluded that the water solubility of Penta ethylene hexamine at 20 °C was > 0.5x10³ g/L. The pH of the aqueous sample was 12.6.

Conclusions:
The water solubility of the test substance at 20 °C is > 500 g/L. The pH of the aqueous sample was 12.6.

Description of key information

The water solubility of the test substance at 20 °C is > 500 g/L. The pH of the aqueous sample was 12.6.

Key value for chemical safety assessment

Water solubility:
500 g/L
at the temperature of:
20 °C

Additional information