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Diss Factsheets
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EC number: 231-891-6 | CAS number: 7775-19-1
- 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
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Flammability
Administrative data
Link to relevant study record(s)
- 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:
- substances / mixtures which in contact with water emit flammable gases
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16/06/2010 to 18/06/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test N.5 (Test method for substances which in contact with water emit flammable gases)
- Deviations:
- not specified
- GLP compliance:
- yes
- Test procedure:
- step 3
- Max. rate of gas release:
- 0.12 L/kg h
- Remarks on result:
- no reaction with water observed
- Test procedure:
- step 2
- Max. rate of gas release:
- 0.09 L/kg h
- Remarks on result:
- no reaction with water observed
- Test procedure:
- step 1
- Max. rate of gas release:
- 0.09 L/kg h
- Remarks on result:
- no reaction with water observed
- Interpretation of results:
- other: EU GHS criteria not met
- Conclusions:
- The sample does not show ignition when gas released and in addition the gas evolution is lower than 1 litre per kilogramm of substance and hour.
- Executive summary:
Substances/mixtures which in contact with water test was done according to UN Test N.5 under GLP compliance. The sample does not show ignition when gas released and in addition the gas evolution is lower than 1 litre per kilogramm of substance and hour.
- Endpoint:
- self-heating substances / mixtures
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12/06/2010 to 16/06/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)
- Deviations:
- not specified
- GLP compliance:
- yes
- Test procedure:
- 100 mm sample cube at 140°C
- Max. temp. reached:
- 140
- Induction time (h):
- 24
- Result:
- negative outcome (no effect observed)
- Remarks on result:
- other: Appearance before: White crystalline solid. Appearance after: A white honeycomb-like solid remained, which was reduced to approximately half of its initial volume. It was determined that the test substance should be classified as not a self-heating subs
- Interpretation of results:
- other: EU GHS criteria not met
- Conclusions:
- No positive effect was observed (appearance before test: white crystalline solid, appearance after test: a white honeycomb-like solid remained, which was reduced to approximately half of its initial volume).
- Executive summary:
Self-heating substances/mixtures test was performed according to the UN manual of test and criteria Test N.4 under GLP compliance. No positive effect was observed (appearance before test: white crystalline solid, appearance after test: a white honeycomb-like solid remained, which was reduced to approximately half of its initial volume). The substance does not need to be classified as self-heating substance.
- Endpoint:
- flammable solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12/06/2010 to 16/06/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.10 (Flammability (Solids))
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- other: HSE Code of Physico-Chemical Properties 1982.
- Deviations:
- not specified
- GLP compliance:
- yes
- Test procedure:
- burning rate test: preliminary screening test
- Remarks on result:
- substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
- Interpretation of results:
- other: EU GHS criteria not met
- Conclusions:
- From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.
- Executive summary:
Flammability test was done according to EU method A.10 under GLP compliance. From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.
Referenceopen allclose all
Full test results:
Run | Powder quantity (g) | Max. rate of gas generation (L.hr-1.kg-1) | Ignition/No ignition |
1 | 25 | 0.09 | No ignition |
2 | 25 | 0.09 | No ignition |
3 | 25 | 0.12 | No ignition |
It was determined that sodium metaborate is not classified as a material of class 4.3. The gas was not tested for flammability.
Appearance before test: White crystalline solid.
Appearance after test: A white honeycomb-like solid remained, which was reduced to approximately half of its initial volume.
It was determined that the test substance should be classified as not a self-heating substance of Class 4, Division 4.2.
From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required.
Initially the sample melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.
Description of key information
Flammable solids
Flammability test was done according to EU method A.10 under GLP compliance. From the preliminary screening test the sample was seen not to ignite and therefore no further testing was required. Initially the sample melted to a white paste, boiled then glowed pale red while in contact with the ignition source. No propagation of this reaction was observed.
Substances/mixtures which in contact with water emit flammable gaese
Substances/mixtures which in contact with water test was done according to UN Test N.5 under GLP compliance. The sample does not show ignition when gas released and in addition the gas evolution is lower than 1 liter per kilogram of substance and hour.
Self-heating substances/mixtures
Self-heating substances/mixtures test was performed according to the UN manual of test and criteria Test N.4 under GLP compliance. No positive effect was observed (appearance before test: white crystalline solid, appearance after test: a white honeycomb-like solid remained, which was reduced to approximately half of its initial volume). The substance does not need to be classified as self-heating substance.
Pyrophoric solids
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.
Key value for chemical safety assessment
- Flammability:
- not classified
Additional information
Justification for classification or non-classification
The substance does not need to be classified for each of the flammability endpoints as there is no ignition of the test item and no propagation was observed. Further the test item did not undergo any dangerous self-heating when tested in a 100mm sample cube at 140°C. In addition, no ignition of an evolved gas was observed and also no gas evolution greater than 1 litre per kilogramm substance per hour. The substance is also known to be stable in contact with air at room temperature for prolonged periods of time (days).
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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