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Diss Factsheets
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EC number: 215-833-7 | CAS number: 1423-46-7
- 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
Explosiveness
Administrative data
- Endpoint:
- explosive properties of explosives
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
Explosive properties are associated with the presence of certain chemical groups in a molecule which can react to pro-duce very rapid increases in temperature or pressure (UN, 2009)1. Column 2 of REACH Annex VII provides the following specific rules for adaptation of the standard information requirement for explosive properties.
“The study does not need to be conducted if:
(1) there are no chemical groups associated with explosive properties present in the molecule, or
(2) the substance contains chemical groups associated with explosive properties which include oxygen and the calculated oxygen balance is less than -200, or
(3) the organic substance […] contains chemical groups associated with explosive properties, but the exothermic decom-position energy is less than 500 J/g and the onset of exothermic decomposition is below 500 °C, or [….]”
Screening procedures and waiving of testing are described in ECHA Guidance on the Application of the CLP Criteria.
Based on the above rules, the test substance is assessed in a tiered approach:
(1) In the absence of specific data on the explosivity of a test substance, its chemical structure is examined for the pres-ence of functional groups associated with explosive properties. These groups can be directly concerned with the explosive property or otherwise able to contribute to it. If the substance does not contain any groups associated with explosivity then a negative result is likely.
(2) If the substance contains chemical groups associated with explosivity, and if oxygen is present in the molecule, the oxygen balance (OB) is calculated according the following reaction scheme and mathematical equation:
CxHyOz + [x + (y/4) - (z/2)] O2 → x CO2 + (y/2) H2O
Using the formula:
Oxygen balance = -1600 [2x + (y/2)-z]/molecular weight;
If the oxygen balance is less than –200, then testing does not need to be conducted and a negative result can be pre-dicted.
The oxygen balance was developed for compounds containing only nitrate groups and it applies only to organic substanc-es. Extending its use to molecules with other oxygen containing groups should be done with care. As an example the presence of hydroxyl-groups will strongly affect the oxygen balance towards higher values, whereas this group does not contribute to explosive properties. In addition the presence of for instance halogens tends to decrease the flammability and explosivity but this is not accounted for.
(3) If groups associated with explosivity are present in the substance, and the oxygen balance is > -200, the substance may be further assessed by giving consideration to any experimental data indicating possible explosive behavior, namely differential scanning calorimetry (DSC) or differential thermal analysis (DTA) data.
From the structural formula of the test substance, it can be concluded that the substance is not explosive. The substance does not have the functional groups associated with explosive properties or chemical instability.
Therefore it can be concluded beyond reasonable doubt that the test substance is incapable of causing explosions by action of external heating sources. As such further testing is not needed.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.