Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Physico-chemical properties were determined from experimental testing, except partition coefficient that was derived from a structural analogue. Some endpoints were waived, based on chemical structure.

The substance is a solid at ambient temperature, with low volatility.

In water, it is slightly soluble, denser (so likely to sink), with no surface-active properties anticipated.

It has low potential for bioaccumulation.

It is NOT classified as dangerous with regard to physical hazards,based on CLP criteria.

From granulometry, the substance contains a limited fraction of particles fine enough to be inhaled, but they are not anticipated to reach the thoracic fraction. However, dust explosion potential should be considered.

Additional information

 

Summary of relevant physico-chemical properties:

Endpoint (method)

Data

Appearance

(visual)

White crystalline powder.

Melting point

(EU A1, capillary)

81°C

Boiling point

(OECD 103/EU A2, Siwoloboff)

Decomposes (darkening) from ca 265°C before boiling. (normal atmP)

Relative density

(OECD 109/EU A3, pycnometer)

D20/4 = 1.17

Particle size distribution

(EUR 20268 EN, laser diffraction)

Median diameter (d50) = 330 µm

Inhalable fraction (<100µm) = 13%

Thoracic fraction (<10µm) = 0%

Dust particles (<500µm) = 70%

Vapour pressure

(OECD 104/EU A4, effusion by VP balance)

0.07 Pa at 25°C

Log Kow

(OECD 117/EU A8, HPLC)

2.9 (at 35°C)

Water solubility

(OECD 105/EU A6, flask)

44.6 mg/L (20°C, pH ca 7.5)

Surface tension

(data waiving, based on structure and use)

No potential for surface-active properties.

Flammability

(UN N1)

(EU A9/ISO 2719, PM closed cup)

(data waiving, based on structure and experience)

.

No propagation in contact with a flame.

Flash Point=142°C

No flammable properties expected if contact with air or water.

Explosive properties

(data waiving, based on structure)

No potential.

Oxidising properties

(data waiving, based on structure)

No potential.

 Self-reactive properties

(data waiving based on chemical structure)

 No potential.

 Organic peroxide

(data waiving based on chemical structure)

 Not a peroxide.

 Corrosion to metals

(data waiving, solid)

 Unlikely for solids (method not applicable).