Molybdenum, N,N-bis(C11-14-branched and linear alkyl)carbamodithioate oxo thioxo complexes

Endpoint summary

Description of key information

Appearance/physical state/colour

Key study:

The appearance, physical state and colour of the test material was not performed to a specific guideline, nor performed under GLP conditions. It was performed as part of the Certificate of Analysis. General observations conducted within a trustworthy Laboratory of the non-EU manufacturer determined the test material to be a brown liquid at 20°C and 101.3kPa (Vanderbilt Chemicals, LLC, 2018).

 

Melting point

Key study:

In an OECD Guideline 102 study performed under GLP conditions, the melting temperature of the test material has been determined to range from 235 K (-38°C), at which it was slightly pliable and gum-like, to 229 K, (-44°C), at which it was crystalline (Springborn Laboratories, Inc., 1996).

 

Boiling point

Key study:

The boiling point of the test material was conducted in a study performed to the standardized guideline OECD 103, under GLP conditions. Two samples were run using the DSC method. Black charred material was left in the crucible at the end of the test, this is characteristic of boiling with decomposition. The boiling point of the test material has been determined to be 271 ºC (Smithers Viscient (ESG) Ltd., 2018).

 

Relative density

Key study:

The density and relative density of the test material was conducted in a study performed to the standardized guideline OECD 109, under GLP conditions. The procedure was performed using a PAAR DMA 35 density meter, a calibration check was performed with double-distilled water, and quintuplicate determinations were performed with the test substance. The density of the test substance was determined to be 1.0317 g/cm^3 (1031.7 kg/m^3) at 20°C. The relative density of the test substance was determined to be 1.0317 (Smithers Viscient (ESG) Ltd., 2018).

 

Particle size distribution (Granulometry)

Waiver:

The study does not need to be conducted because the test substance or used in a non solid or granular form. Thus the study has been waived.

 

Vapour pressure

Key study:

In an OECD Guideline 104 study performed under GLP conditions, the vapour pressure the test material at 18°C (290 K) is determined to be less than 0.07 torr (10 Pa), the lower limit for the static method used (Springborn Laboratories, Inc., 1996).

 

Partition coefficient

Waiver:

No method of analysis could be developed; the test substance does not dissolve in water or in octanol. It was therefore concluded that the partition coefficient test therefore was not technically feasible. Thus the study has been waived.

 

Water solubility

Key study:

In an OECD Guideline 105 study, conducted according to GLP, the water solubility of the test material at 20°C is 1x10E-3 g/L (Springborn Laboratories, Inc., 1996).

 

Surface tension

Waiver:

The study does not need to be conducted because water solubility of the test material is below 1mg/L at 20 °C. It was therefore concluded that the surface tension test is not scientifically technically feasible. Thus the study has been waived.

 

Flash point

Key study:

The flash point of the test material was conducted in a study performed to the standardized guideline EU Test Method A.9., under GLP conditions. A Setaflash model 70000-0 instrument (Stanhope-Seta), which employs the closed cup equilibrium method, was used. The preliminary test gave no flash point up to 110°C. Two definitive tests were therefore performed at 110°C and both gave no flash point at 110°C. The flash point of the test substance was determined to be >110°C (Smithers Viscient (ESG) Ltd., 2018).

 

Auto-flammability

Key study:

The auto-ignition temperature of the test material was conducted in a study performed to the standardized guideline EU Test Method A.15., under GLP conditions. The test substance was injected as droplets with a syringe into the centre of the flask, the time when any flash or flame was observed was read from the chart trace, or the test was run for at least five minutes. The procedure was repeated at different temperatures and with different sample volumes until the minimum value of the ignition temperature was obtained. The auto-ignition temperature of the test substance was 317 ± 3°C, with an injection volume of 200 µL (Smithers Viscient (ESG) Ltd., 2018).

 

Flammability

Waiver:

The study does not need to be conducted because the test substance is a liquid, therefore the study is technically not feasible. Thus the study has been waived.

 

Explosive properties

Key study:

The explosive properties of the test material were conducted in a study performed to the standardized guideline EU Test Method A.14., under GLP conditions. The explosive properties assessment has been based on the provided structural information only and information on the original materials used for preparation. The provided structure does not have any explosophores associated with its structure. As the test substance has variable composition with variable amount of oxygen and sulphur the oxygen balance was calculated for the range of different numbers of oxygen and sulphur atoms based on the most likely molecular formulas. The mean calculated oxygen balance ranged from -214.14 to -211.53%. These values are all below -200% which would not suggest explosive properties. Based on the theoretical structural assessment and the DSC analysis, the test substance is not considered to have explosive properties (Smithers Viscient (ESG) Ltd., 2018).

 

Oxidizing properties

Key study:

The oxidizing properties of the test material were conducted in a study performed to the standardized guideline EU Test Method A.21., under GLP conditions. The sample was found to have a mean pressure rise time greater than that observed for the nitric acid reference sample. The test substance is therefore not considered to be an oxidising liquid (Smithers Viscient (ESG) Ltd., 2018).