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EC number: 232-149-4 | CAS number: 7789-21-1
- 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
Oxidising properties
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidising liquids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Principles of method if other than guideline:
- Investigation of the reaction of fluorosulphuric acid with cellulose and its behaviour towards another oxidizable organic substance without any functional groups (charcoal)
- GLP compliance:
- no
- Sample tested:
- other: not specified (migrated information) max. temperature
- Parameter:
- other: max. temperature
- Result:
- ca. 135 other: °C (migrated information)
- Remarks on result:
- other: Test 1: mixing ratio (fluorosulphuric acid / cellulose) = 1:1
- Sample tested:
- other: not specified (migrated information) max. temperature
- Parameter:
- other: max. temperature
- Result:
- ca. 53 other: °C (migrated information)
- Remarks on result:
- other: Test 2: mixing ratio (fluorosulphuric acid / cellulose) = 4:1 (probably insufficient contact of the temperature sensor with the mixture)
- Sample tested:
- other: not specified (migrated information) max. temperature
- Parameter:
- other: max. temperature
- Result:
- ca. 82 other: °C (migrated information)
- Remarks on result:
- other: Test 3: mixing ratio (fluorosulphuric acid / cellulose) = 4:1
- Sample tested:
- other: not specified (migrated information) max. temperature
- Parameter:
- other: max. temperature
- Result:
- ca. 70 other: °C (migrated information)
- Remarks on result:
- other: Test 4: mixing ratio (fluorosulphuric acid / charcoal) = 1:1
- Sample tested:
- other: not specified (migrated information) max. temperature
- Parameter:
- other: max. temperature
- Result:
- ca. 50 other: °C (migrated information)
- Remarks on result:
- other: Test 5: mixing ratio (fluorosulphuric acid / charcoal) = 4:1 (only imprecise temperature measurement due to the inhomogeneous consistency)
- Interpretation of results:
- GHS criteria not met
- Executive summary:
Heitkamp D, 2009
The performance of the standard test method for oxidizing properties of liquids according to the UN Manual, test method O.2 did not appear feasible because of corrosion of test devices and workplace safety issues. Therefore a simplified method was applied: In two test series cellulose and charcoal were mixed with fluorosulphuric acid according to the mixing ratios of UN test procedure UN O.2 and the temperatures were recorded. The temperature rise was caused by decomposition of the material (cellulose) or by the heat of adsorption (charcoal).
During the performance of the tests, an ignition did not occur. There was no indication for any oxidizing behaviour.
It was concluded that fluorosulphuric acid is not an oxidizing liquid as defined by the European CLP Regulation (EC No 1272/2008).
Reference
Result:
From the tests it can be concluded that fluorosulphuric acid is not an oxidizing liquid as defined by the European CLP
Regulation (EC No. 1272/2008).
Justification:
As expected, fluorosulphuric acid exhibits an exothermic reaction with cellulose and charcoal, respectively. The
hydroxylic functional groups of cellulose are chemically attacked, and in consequence decomposition occurs with
elimination of water and hydrogen fluoride, respectively. The decomposition becomes evident in the blackening of
the material. However, the temperature rise upon mixing with charcoal is caused by the heat of adsorption.
During the performance of the tests, an ignition did not occur. The observed behaviour fully agrees with the
properties of an inorganic reactive acid derivative. There was no indication for any oxidizing behaviour.
Details:
Table 1: test details
|
|
Mixing ratio |
Sample |
Observation |
Test 1 |
Fluorosulphuric acid / Cellulose |
1:1 |
m(Fluorosulpuric acid) = 2.5g m(Cellulose) = 2.5g |
- blackening - liberation of whitish grey gas - formation of bubbles - max. temperature approx. 135 °C |
Test 2 |
Fluorosulphuric acid / Cellulose |
4:1 |
m(Fluorosulphuric acid) = 4g m(Cellulose) = 1g |
- blackening - liberation of whitish grey gas - formation of bubbles - max. temperature approx. 53 °C * |
Test 3 |
Fluorosulphuric acid / Cellulose |
4:1 |
m(Fluorosulphuric acid) = 8g m(Cellulose) = 2g |
- blackening - liberation of whitish grey gas - formation of bubbles - max. temperature approx. 82 °C |
Test 4 |
Fluorosulphuric acid / Charcoal |
1:1 |
m(Fluorosulphuric acid) = 2.5g m(Charcoal) = 2.5 g |
- liberation of whitish grey gas - max. temperature approx. 70 °C |
Test 5 |
Fluorosulphuric acid / Charcoal |
4:1 |
m(Fluorosulphuric acid) = 8g m(Charcoal) = 2g |
- liberation of whitish grey gas - mixture coagulates and stiffens - max. Temperature approx. 50 °C ** |
* (probably insufficient contact of the temperature sensor with the mixture)
** (only imprecise temperature measurement due to the inhomogeneous consistency)
Description of key information
It was concluded that fluorosulphuric acid is not an oxidizing liquid as defined by the European CLP Regulation (EC No 1272/2008).
Key value for chemical safety assessment
- Oxidising properties:
- non oxidising
Additional information
Justification for classification or non-classification
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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