Registration Dossier
Registration Dossier
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Diss Factsheets
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EC number: 203-475-4 | CAS number: 107-25-5
- 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
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
The substance is an extremely flammable gas. It is chemically unstable at a temperature greater than 20 °C and/or a pressure greater than 101.3 kPa. Testing for pyrophoric properties as well as water reactivity is not applicable as the substance is a gas. The substance also does not need to be considered as self-reactive as well as self-heating based on its state of matter. In accordance with the chemical structure the substance is no organic peroxide.
Key value for chemical safety assessment
- Flammability:
- extremely flammable
Additional information
The flammability of the substance as well as its explosion limits are derived in a weight-of-evidence approach of three secondary sources, HSDB, GESTIS and Hommel. All values match together. Taking the primary source of the data into account HSDB is considered as the most valid source as the data is derived from US authorities. Therefore this source is chosen as key result.
According to UN-MTC, Section 35.3.2.1 it is classified as chemically unstable gas, category B.
Pyrophoric properties and water reactivity does not need to be considered for the substance based on its state of matter as gas as both categories are not applicable for gases. Additionally self-reactive and self-heating behaviour could be excluded based on the state of matter. Deduced from the chemical structure the substance is no organic peroxide.
Justification for classification or non-classification
The flammability of the substance is derived from three different sources as extremely flammable. Considering the explosion limits (2.6 to 39 vol-%) both conditions of regulation EC/1272/2008 (CLP) for flammable gases are fulfilled. The substance is ignitable in a mixture with air at a ratio of 13vol-% or lesser and also the substance has a explosion range of at least 12 vol-%. Therefore the substance is classified as flammable gas Cat. 1 (H220) resp. R12.
According to UN-MTC, Section 35.3.2.1 it is classified as chemically unstable gas, category B (H231).
As other categories are not relevant as they are either not applicable or could be waived based on the state of matter or the chemical structure the substance does not need further classification for flammability.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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