2H-Tetrazol-5-amine, potassium salt (1:1)

Water solubility

Administrative data

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

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Deviations:

yes

Remarks:

Sampling interval was seven hours, 25 hours and four days. Temperature during shaking of the vessels was 20 ± 1°C. As the vessels were thermostated at 20 ± 0.1°C before sampling. Both deviations areconsidered as uncritical.

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Test material

Test material information

Constituent 1

Reference substance name:

potassium 5-amino-1H-1,2,3,4-tetrazol-1-ide

Cas Number:

136369-04-5

Molecular formula:

CH2KN5

IUPAC Name:

potassium 5-amino-1H-1,2,3,4-tetrazol-1-ide

Test material form:

solid: particulate/powder

Details on test material:

Batch no.: 08KI030

Results and discussion

Water solubility

Key result

Water solubility:

ca. 601.68 g/L

Conc. based on:

test mat.

Temp.:

20 °C

pH:

ca. 10

Details on results:

Water solubility of 5-Aminotetrazol Potassium is 602 ± 15 g/L (= kg/m3) at 20 ± 0.5°C.

Applicant's summary and conclusion

Conclusions:

Water solubility of 5-Aminotetrazol Potassium is 602 ± 15 g/L (= kg/m3) at 20 ± 0.5°C.

Executive summary:

In a preliminary study, the solubility of the test item in water was estimated as > 500 g/L. In the main study, approx.10 g test item were weighed into each of six individual vessels,

5.0 mL water were added, and the vessels were shaken at 20 ± 1.0°C. On the first day and the second day, respectively, vessel 1 was taken from the shaking apparatus, thermostated at 20 ± 0.5°C and centrifuged. A sample was taken and analysed using HPLC as shaking of the test vessels was continued. No differences above 15% in the concentration of the solution could be determined between the sampling days 1 and 2, supporting the hypothesis, that the maximum concentration of the test item had been reached. For safety purposes, the flasks were shaken for

further four days. On the sixth day, all vessels (1 – 6) were sampled and analysed in the same fashion. At the plateau, the concentration of 5-Aminotetrazol Potassium in water had reached 601.68 ± 15.22 g/L at 20 ± 0.5°C (mean value ± standard deviation of six individual vessels).