Fatty acids, C16-18, reaction products with triethanolamine, di-Me sulfate-quaternized

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

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

Key result

Melting / freezing pt.:

>= 85 - <= 110 °C

Remarks on result:

other: the test item is a solid up to a temperature of 85°C and has no specific melting point

Description of key information

Melting range between 85°C and 110°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

85 °C

Additional information

The data are read across from partially unsaturated TEA-Esterquat which has an almost identical structure.

The melting point of partially unsaturated TEA-Esterquat was investigated using three different methods (OECD Guideline 102 and EU-Method A.1., differential scanning calorimetry and capillary method) and the Penetrometer-Test. According to the observation with the three different methods the following conclusion can be drawn: The test item is a solid at ambient temperature and has the character of a waxy, viscous solidified liquid. The test item has no specific melting point. With increasing temperature, the viscosity of the test item decreases. According to the Penetrometer-Test, the test item is a solid up to a temperature of 85°C. The test item is fluid at 110°C.