Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 229-347-8 | CAS number: 6484-52-2
- 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)
- Endpoint:
- flammable solids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied
- Endpoint:
- substances / mixtures which in contact with water emit flammable gases
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water
- Endpoint:
- pyrophoric solids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied
- Endpoint:
- self-heating substances / mixtures
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
Ammonium nitrate is an oxidizing inorganic salt. Heating will result in oxidation of the ammonium ion by the nitrate ion and reduction of the nitrate ion by the ammonium ion; the substance decomposes into N2O and water molecules.
NH4NO3 ---> N2O + 2H2O
This (exothermic) decomposition reaction probably takes place above its melting temperature of 169.6°C.
Ammonium nitrate will not react with oxygen in the air and will therefore not be a self-heating substance.
Supporting information:
-Nitrogen in the nitrate is on the highest oxidation level (+5) .
-Ammonium nitrate is not a flammable solid. - Endpoint:
- pyrophoric solids
- Type of information:
- not specified
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: secondary source
- Guideline:
- other: not mentioned
- Principles of method if other than guideline:
- no information in the reference
- GLP compliance:
- not specified
- Key result
- Test procedure:
- ignition time on contact with air
- Remarks on result:
- no ignition on contact with air (not further specified)
- Interpretation of results:
- study cannot be used for classification
- Conclusions:
- According to the National Fire Protection Agency (NFPA), ammonium nitrate has a flammability of 0, which includes any material that will not burn.
Referenceopen allclose all
According to the National Fire Protection Agency (NFPA), ammonium nitrate has a flammability of 0, which includes any material that will not burn.
Description of key information
Ammonium nitrate is an oxidizing inorganic salt. Heating will result in oxidation of the ammonium ion by the nitrate ion and reduction of the nitrate ion by the ammonium ion; the substance decomposes into N2O and water molecules.
NH4NO3 ---> N2O + 2H2O
This (exothermic) decomposition reaction probably takes place above its melting temperature of 169.6°C.
Ammonium nitrate will not react with oxygen in the air and will therefore not be a self-heating substance.
Supporting information:
-Nitrogen in the nitrate is on the highest oxidation level (+5) .
-Ammonium nitrate is not a flammable solid.
Key value for chemical safety assessment
- Flammability:
- non flammable
Additional information
Justification for classification or non-classification
Based on the available data, no classification for ammonium nitrate according to CLP Regulation (EC) No 1272/2008 for the following hazards:
- Flammable solids
- Pyrophoric solids
- Self-heating substances
- Substances which in contact with water emits flammable gases
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.

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