Registration Dossier

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Appearance / physical state

The substance was determined to be a pale yellow, waxy, solid.

 

Melting/freezing point

Melting temperature was determined by differential scanning calorimetry to be 29 to 60 °C (302 to 333 K) (OECD 102 and EU Method A.1).

 

Boiling point

The substance was determined by differential scanning calorimetry to decompose from approximately 171 °C (44 K) at 103 kPa (OECD 103 and EU Method A.2).

 

Relative density

Relative density of the substance was determined to be 0.946 at 20.0 ± 1 °C using a gas comparison pycnometer (OECD 109 and EU Method A.3).

 

Granulometry

Granulometry was not investigated because the test item is a waxy solid with determined melting point in the range 29 to 60 °C. Particle size influencing toxicological profile is irrelevant because the substance is on the border between the solid and liquid state at ambient temperature. Furthermore, the determined vapour pressures of 0.0345 Pa at 25 °C, 0.0985 Pa at 55 °C and 0.891 Pa at 145 °C indicate that exposure of humans to the test item via the inhalation route is of low concern.

 

Vapour pressure

Vapour pressure was determined to be 0.0345 Pa at 25 °C, 0.0985 Pa at 55 °C and 0.891 Pa at 145 °Cusing the vapour pressure balance method (OECD 104 and EU Method A.4).

 

Partition coefficient

The partition coefficient of the test item was determined to be in the range 7.20 x 10E05 to > 1.0 x 10E10 with a Log10 Pow in the range 5.86 to > 10.0. By area percentage normalisation, approximately 98 % of the test item had a partition coefficient > 1.0 x 10E10 with Log Pow > 10.0 (OECD 117 and EU Method A.8).

 

Water solubility

Water solubility was determined to be < 6.92 x 10E-04 g/L at 20 ± 0.5 °C using the flask method (OECD 105 and EU Method A.6).

 

Surface tension

The study does not need to be conducted because water solubility is below 1 mg/L at 20 °C.

 

Flash point

The substance was determined to have no flash point below 300 °C using the closed cup equilibrium method (EU Method A.9).

 

Auto flammability / self-ignition temperature

Auto-ignition temperature was determined to be 400 ± 5 °C (EU Method A.15).

 

Aerosols

Consideration of the test item as an aerosol is not required because the substance is not supplied in aerosol dispensers.

 

Flammable gases (including chemically unstable gases)

Consideration of the test item as a flammable gas is not required because the substance is a solid.

 

Flammable solids

The substance is a waxy solid with a determined melting temperature of 29 to 60 °C (302 to 333 K) and, for that reason, a flash point determination was performed to fulfil the requirement for information on flammability and provide adequate data for purposes of classification and labelling.

 

Pyrophoric liquids

The study does not need to be conducted because the substance is a solid.

 

Pyrophoric solids

The study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied.

 

Self-heating substances

The study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied.

 

Substances which in contact with water emit flammable gases

The study does not need to be conducted because the substance is known to be soluble in water to form a stable mixture.

 

Explosive properties

Explosive properties were predicted negative based on chemical structure of the test item (EU Method A14).

 

Desensitised explosives

Consideration of the test item as a desensitised explosive is not required because the substance is not explosive and is not placed on the market wetted with water or alcohols or diluted with other substances to suppress explosive properties.

 

Oxidising gases

Further consideration is not requiredbecause the substance is a solid.

 

Oxidising liquids

The study does not need to be conducted because the substance is a solid.

 

Oxidising solids

Oxidising properties were predicted negative based on chemical structure of the test item (EU Method A.21).

 

Stability in organic solvents and identification of degradation products

Investigation of test item stability and identification of degradation products is not required because the stability of the substance is not considered to be critical.

 

Dissociation constant

Investigation of dissociation constant is not required because the substance has no ionic structure.

 

Viscosity

Investigation of test item viscosity is not required because the substance is a solid.

 

Aspiration hazard

The test item is expected to be partially liquid at 40 °C. However, the substance not understood to be a hydrocarbon with a kinematic viscosity of ≤ 20.5 mm2/s and experimental investigation of aspiration hazard is not a standard REACH requirement.

 

Self-reactive substances

The study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive or self-reactive properties and hence, the classification procedure does not need to be applied.

 

Organic peroxides

The study does not need to be conducted because the substance does not fall under the definition of organic peroxides according to GHS and the relevant UN Manual of tests and criteria.

 

Corrosive to metals

The substance is a low melting point solid that could theoretically become liquid during transport. However, testing for corrosion to metals is not a standard REACH endpoint, and experience in handling and use demonstrates that the substance does not materially damage or destroy metals. Further investigation is therefore considered unnecessary.

 

Gases under pressure

Consideration of the test item as a gas under pressure is not required because the substance is a solid.

Additional information