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EC number: 222-908-8 | CAS number: 3658-77-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Endpoint summary
Administrative data
Description of key information
Physico-chemical properties were available from literature, or determined from experimental testing. Some endpoints were waived, based on chemical structure.
The substance is a dense solid at ambient temperature, with low volatility. It turns to a wet paste when exposed to air, due to degradation.
In water, it is very soluble, with no surface-active properties. It will ionise in basic media, therefore solubility and partitioning are anticipated to undergo pH-dependency.
It has low potential for bioaccumulation and aquatic chronic toxicity.
It decomposes upon heating, but is NOT classified as dangerous with regard to physical hazards, based on CLP criteria. However, dust explosion potential should be considered, due to small particle size.
Additional information
Summary of relevant physico-chemical properties:
Endpoint |
Data |
Appearance (visual) |
White to pale yellow powder. |
Melting point (literature) |
ca 79°C |
Boiling point (OECD 103/EU A2, dynamic) |
decomposes from ca 200°C before boiling at ca 230°C |
Relative density (OECD 109/EU A3, pycnometer with replacement liquid) |
1.3217 |
Vapour pressure (OECD 104/EU A4/effusion Knudsen) |
0.81 Pa at 25°C (close extrapolation) |
Partition coefficient (literature, flask-like method) |
Log Kow = 0.95 (at pH 2.5, non-ionised form) LogD = - 0.133 in pure water (pH not specified) |
Water solubility (OECD 105/EU A6, flask method) |
176 g/L (20°C, pH ca 2) |
Surface tension (OECD 115/EU A5/plate) |
71.78 mN/m, at 1 g/L |
Flammability (UN N1, preliminary test) |
No ignition in contact with a flame. (melts only) |
Self-Ignition Temperature, Self-heating properties (data waiving) |
No relative self-ignition, or self-heating, anticipated, as a low melting solid. |
Flammability if contact with air or water (data waiving) |
No pyrophoric properties expected, or release of flammable gas, based on chemical structure and experience. |
Explosive properties (UN MTC App.6/DSC screening test and Test series 1) |
No structural alert, but maximum decomposition energy = -950 J/g in the temperature range of 220-400°C. Koenen tube, time/pressure and Trauzl tests negative. |
Oxidising properties (data waiving) |
No oxidising properties anticipated, based on chemical structure. |
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. |
Particle size distribution (OCDE110/ISO13320/laser diffraction in air) |
Median diameter (D50) = 184 μm Thoracic fraction (<10 μm) = 5.8 % Dust particles (<500 μm) = 88.2 % |
Dissociation constant (literature, titration-like method) |
pKa = 8.56 |
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