Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Physico-chemical properties were determined from experimental testing.

Some endpoints were waived, based on chemical structure and/or experience.

The substance is a crystalline solid at ambient temperature, with almost no inhalable particles, and low volatility.

In water, it is slightly soluble, with no dissociation anticipated, but should display weak surface-active properties. However, despite the standardised test shows surface-active potential under the experimental conditions, it is not considered as a true surfactant, due to the chemical structure of the substance, non-intended use and observed behaviour of the substance in the water solubility and partition coefficient studies.

It has potential for bioaccumulation and aquatic chronic toxicity, based on CLP criteria.

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

Additional information

Summary of relevant physico-chemical properties:

Endpoint

Data

Appearance

(visual)

White crystalline solid.

Melting point

(eq.to OECD 102, DSC)

ca 80 °C

Boiling point

(OECD 103, Siwoloboff capillary)

324 °C at 99.4 kPa

Relative density

(OECD 109, gas comparison pycnometer)

D204= 1.081

Vapour pressure

(eq.to OECD 104, dynamic/ebulliometer)

0.054 Pa at 20°C (extrapolated)

Partition coefficient

(OECD 123, slow-stirring)

log Kow = 5.09 (at 25°C)

Water solubility

(OECD 105, column elution)

1.88 mg/L at 20°C (pH 6.5)

Surface tension

(OECD 115/EU A5, ring)

59.3 mN/m, at 90% saturation expected (i.e. ca 1.7 mg/L), and 20.2°C.

Flammability

(EU A10, preliminary test)

No ignition in contact with a flame.

Flammability if contact with air or water

(data waiving)

No pyrophoric properties expected, or release of flammable gas, based on chemical structure and experience.

Auto-flammability, Self-heating properties

(data waiving)

(eq.to EU A15)

.

No relative self-ignition or self-heating anticipated, as a low melting solid.

When melted, Auto-Ignition temperature ca 255°C.

Explosive properties

(data waiving)

No explosive properties anticipated (based on chemical structure and calorimetric test).

Oxidising properties

(data waiving)

No oxidising properties anticipated (based on chemical structure).

Stability in organic solvents

(data waiving)

Not expected to be critical.

 Dissociation constant

(data waiving)

 No ionisable function.

 Self-reactive properties

(data waiving)

 No potential, based on chemical structure.

 Organic peroxide

(data waiving)

 Not a peroxide, based on chemical structure.

 Corrosivity to metals

(data waiving)

 Test method not applicable to solids.

 Granulometry

(sieving)

 99.9% (m/m) > 100 µm. No inhalable particles.

2% < 630 µm. Low potential for dust explosion.