Reaction products of C18 (unsaturated) fatty acids and dimethyl sulfate and triethanolamine

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
This read-across is based on the hypothesis that source and target substances have similar (eco)toxicological properties because
• they share structural similarities with common functional groups: One quaternised ethanolamine moiety, one to three, mainly two ester groups with a typical UVCB distribution with long-chain fatty acids of natural origin. The molecular structure is almost identical.
• they are manufactured from similar resp. identical precursors (triethanolamine, long-chain fatty acids, dimethyl sulphate) under similar conditions. Therefore, common breakdown products via physical and biological processes, which result in structurally similar chemicals are evident
• A constant pattern in the changing of the potency of the properties across the TEA-Esterquats by chain-length and the grade of esterification is not observed, because the fatty acid chain-length distribution is too narrow and similar and the distribution of mono-, di-, and tri-esters is identical. Some variation caused by variation in C=C double bonds may occur and will be discussed at the relevant endpoint.

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
See justification for read-across attached to chapter 13 of this IUCLID file.

3. ANALOGUE APPROACH JUSTIFICATION
See justification for read-across attached to chapter 13 of this IUCLID file.

4. DATA MATRIX
See justification for read-across attached to chapter 13 of this IUCLID file.

Reason / purpose for cross-reference:

read-across: supporting information

Reason / purpose for cross-reference:

read-across source

Relative self-ignition temperature:

> 402 °C

Remarks on result:

other:

Remarks:

at atm. press. of 1013.0 hPa

Conclusions:

No self-ignition temperature was observed for the analogue source test substance until the maximum temperature of 402°C, according to the testing guideline for auto-flammability (solids-determination of relative self-ignition temperature) in the sense of the consolidated version of Council Directive 67/548/EEC, Annex V, Method A.16 (Council Directive 92/69/EEC).

Description of key information

No self-ignition temperature observed.

Additional information

No experimental data are available for the target substance oleic acid-based TEA-Esterquat. However, the self-ignition temperature was determined for the source substance partially unsaturated TEA-Esterquat. A justification for read-across is attached to Iuclid section 13.

No self-ignition temperature was observed until the maximum temperature of 402°C, according to the testing guideline for auto-flammability (solids-determination of relative self-ignition temperature) in the sense of the consolidated version of Council Directive 67/548/EEC, Annex V, Method A.16 (Council Directive 92/69/EEC).