Hexanediamide, N1,N1,N6,N6-tetrakis(2-hydroxyethyl)-

Hydrolysis

Administrative data

Endpoint:

hydrolysis

Type of information:

experimental study

Adequacy of study:

key study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1999

Report date:

1999

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)

Deviations:

no

Test material

Test material information

Constituent 1

Radiolabelling:

no

Results and discussion

Dissipation DT50 of parent compound

Dissipation DT50 of parent compound 1

pH:

4

Temp.:

25 °C

DT50:

> 1 yr

Dissipation DT50 of parent compound 2

pH:

7

Temp.:

25 °C

DT50:

> 1 yr

Dissipation DT50 of parent compound 3

pH:

9

Temp.:

50 °C

Hydrolysis rate constant:

0.002 h-1

DT50:

297.5 h

Type:

(pseudo-)first order (= half-life)

Remarks on result:

other:

Dissipation DT50 of parent compound 4

pH:

9

Temp.:

70 °C

Hydrolysis rate constant:

0.015 h-1

DT50:

47.29 h

Type:

(pseudo-)first order (= half-life)

Remarks on result:

other:

Dissipation DT50 of parent compound 5

pH:

9

Temp.:

85 °C

Hydrolysis rate constant:

0.049 h-1

DT50:

14.02 h

Type:

(pseudo-)first order (= half-life)

Remarks on result:

other:

Dissipation DT50 of parent compound 6

pH:

9

Temp.:

25 °C

Hydrolysis rate constant:

0.004 d-1

DT50:

174 d

Type:

(pseudo-)first order (= half-life)

Remarks on result:

other:

Applicant's summary and conclusion

Validity criteria fulfilled:

yes