Reaction products of amines, dicoco alkyl and glycollic acid

Endpoint summary

Additional information

Appearence and physical state

The substance is an odourless dark amber viscous liquid.

Pour point

In an OECD Guideline 102 (Melting point / Melting Range) study a sample of test material was poured into a test jar which was then enclosed in a glass jacket. The sample was heated to 46°C in a water bath set at 48°C before being allowed to cool in air to 35°C. The sample was transferred to a bath maintained at -1°C to 2°C and cooled to 10°C, then transferred to a bath maintained at -18°C to -15°C. Starting at 8°C and at intervals of 3°C, the sample was tilted to a horizontal position for a period of 5 seconds, during which the sample was observed for signs of flow. The pour point of the test material has been determined to be 269 ± 3 °K (-4.15°C). The test material is a liquid and will not melt. The pour point of the test material is below 0°C.

Melting Point

In an OECD Guideline 103 (Boiling point/boiling range) study, Differential Scanning Calorimetry (DSC). was used to determine the melting point of the test material. An estimated boiling value was calculated using an adaptation of the Stein and Brown method (Episuite, 2000 US EPA v3.11 (June 2003)).

The boiling point has been determined to be greater than 360°C at 100.68 kpa. Slight gradual volatilisation which became more significant from approximately 328°C was observed. No boiling point could be determined. A calculated value of boiling point gave a result of 645°C. The test material undergoes decomposition before boiling.

Density

In a key study performed according to OECD Guideline 109 (Density of liquids and solids) using the pyncnometer method, the density of the test material was calculated by comparison of mass of the test material against that of water using the density of water at the test temperature.

The results of the duplicate determinations were 887.97 kg/m3 and 887.94 kg/m3. The density of the test material has been determined to be 888 kg/m3 at 20.2±0.5°C.

Vapour Pressure

In a key study performed in accordance with EU Method A.4 and OECD Guideline 104 using a vapour pressure balance, the vapour pressure of the test material has been determined to be 2.3E-08 Pa at 25°C. The test material is not volatile.

Partition Coefficient (Octanol-Water)

The key study was performed in accordance with OECD Guideline 117, HPLC Method. Testing was carried out at approximately neutral pH to limit dissociation. The results indicated that approximately 97.5% of the test material had a log10 Pow >6.01 and approximately 60.6% > 9.4.

Water solubility

The experimental determination of the test material was performed in accordance with OECD Guideline 105 (water solubility). The method is not ideally suited to the testing of complex reaction mixtures. Therefore, the water solubility was estimated by visual inspection (shake-flask method) and computer-based estimation software (WSKOWWIN version 1.41 US EPA 2000) on the primary component.

The water solubility of the test material has been determined to be less than 1.60E-03 g/L of solution at 20±0.5°C by visual inspection. A calculated value of water solubility of the primary component of the test material 2 -hydroxy,N,N-dicoco alkyl acetamide (C12 chain lengths) gave a result of 1.21E-08 g/L at 25°C. The test material is considered to be insoluble in water

Surface tension

In accordance with the REACH Annex VII Column 2 adaptation for this endpoint a surface tension study does not have to be performed where the water solubility of the test material is below 1 mg/L at 20°C.

Flammability (Flash Point)

The flammability of the liquid test material was determined in accordance with EU Method A.9 (Flash-Point).The Setaflash 13740-2 tester was used over the temperature range ambient to 110°C and the Setaflash 13770-2 tester was used over the temperature range 115°C to 230°C.

The flash point of the test material has been determined to be 226±2°C. In accordance with CLP Regulation (EC) No 127/2008 the test material is not classified as flammable

Auto-ignition temperature

In a key study according to EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)) the test material was injected into a heated test flask and the flask observed for signs of ignition over a 300 second period. The test material has been determined to have an auto-ignition temperature of 368 ± 5°C. In accordance with CLP Regulation (EC) No 127/2008 the test material is not considered to be self-heating.

Explosive Properties

In accordance with column 2 of REACh Annex VII, the study does not need to be conducted if there are no chemical groups associated with explosive properties present in the molecule.

Moreover, according to CLP and UN criteria, no structural group associated with self-reactive properties is present, therefore subsequent classification shall not apply either.

Oxidising Properties

Based on the internationally recognized UN Recommendation criteria the test material is considered to be non-oxidizing and therefore is not to be tested experimentally for the classification under division 5.1 as oxidizing substances. Thus it can be concluded beyond a reasonable doubt that the test material is not capable of causing fire or enhancing the risk of fire when in contact with combustible material.

Stability in organic solvents

The stability of the test substance in Arachis oil BP, used as the vehicle in a 28-day repeated dose oral toxicity study, was determined by comparing the chromatograms of the test substance stored in this vehicle at concentrations of 6.25, 62.5 and 250 mg/L on day 0 and on day 14.

Results show the solutions of the test material in Arachis oil BP are stable with concentrations ranging from 92 - > 100% of nominal at the end of the 14 -days.

Dissociation Constant

In accordance with section 1 of REACH Annex XI, the dissociation constant study does not need to be performed as the substance is not soluble in water.

Viscoscity

The viscosity of the test substance was determined according to ASTM D445-97 Standard Test Method for Kinematic Viscosity of Transparent and Opaque liquids (the Calculation of Dynamic Viscosity). Viscosities were measured on 5 different batches at two temperatures, and the ranges were:

Viscosity at 100 deg. C is 6.2 to 6.5 cSt

Viscosity at 40 deg. C is 35.5 to 37.7 cSt