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EC number: 273-321-9 | CAS number: 68956-82-1
- 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
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2006-08-23 to 2006-08-24
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.14 (Explosive properties)
- Version / remarks:
- , 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- 2006-12-20
- Parameter:
- other: More sensitive to shock than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: More sensitive to friction than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: Explosive under influence of flame
- Remarks on result:
- negative (not further specified)
- Parameter:
- other: Explosive (not specified)
- Remarks on result:
- negative (not further specified)
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The test item was not considered to have explosive properties in the experimental conditions.
- Endpoint:
- explosive properties of explosives
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Qualifier:
- according to guideline
- Guideline:
- other: BS EN 13821:2002 (E) – Determination of minimum ignition energy of dust / air mixtures.
- Qualifier:
- according to guideline
- Guideline:
- other: BS EN 14034 Determination of explosion characteristics of dust clouds Part 1: Determination of the maximum explosion pressure and Part 2: Determination of the maximum rate of explosion pressure rise (dp/dt) of dust clouds.
- GLP compliance:
- yes
- Key result
- Test series:
- other: BS EN 13821:2002 (E)
- Method:
- other: Minimum Ignition Energy
- Parameter:
- limiting impact energy (J)
- Value:
- 0.006
- Result:
- other: dust explosion class: 3
- Conclusions:
- Minimum ignition energy testing has shown that this material is very sensitive to ignition from electrostatic discharges (MIE = 5 - 6 mJ).
The 20 L Sphere Test gave a Pmax of 8.8 bar and a Kst value of 309 bar.m.s-1 therefore the sample falls within the St 3 classification or high explosion severity potential. - Executive summary:
Interpretation of Results and Recommendations
Minimum ignition energy testing has shown that this material is very sensitive to ignition from electrostatic discharges (MIE = 5 - 6 mJ), therefore spark discharges from isolated personnel, metal conductors (including metal hand tools such as scoops and knifes as well as larger equipment), conductive process materials and propagating brush discharges (produced from thin insulating materials in close proximity to an earthed conductor) will present a risk.
This characteristic implies the need for extreme caution in the avoidance of electrostatic ignition sources. This should include, but is not limited to:
- Minimisation of charging mechanisms (use of low energy handling methods and slow transfers).
- Rigorous earthing of plant, personnel and conductive process materials.
- Avoidance of large scale storage (eg. in silos or volumes greater than 1m³) of insulating powders or granules to minimise charge accumulation and reduce the possibility of cone discharges.
If avoidance of ignition sources is employed as the basis of safety, a careful and rigorous identification and mitigation of ignition sources (including non-electrostatic ignition sources) should be undertaken. If not already known it is recommended this materials electrostatic properties are evaluated to assess its ability to accumulate and retain hazardous levels of charge (powder volume resistivity & charge relaxation time testing).
The MIE of a material is highly sensitive to temperature. If data obtained at ambient temperature is applied to an elevated temperature processing environment, a suitable safety margin should be employed. Published correlations exist regarding applicable correction factors.
The 20 L Sphere Test gave a Pmax of 8.8 bar and a Kst value of 309 bar.m.s-1 therefore the sample falls within the St 3 classification or high explosion severity potential. It should be borne in mind that owing to the non uniformity of dust clouds, a repeat of the test could cause the Kst value to fluctuate by ± 10 %. Consideration must be given to this if applying the data for use in explosion protection / prevention measures.
As the Kst has been found to be in the St 3 category (high explosive severity potential) then it may be prudent to consider inert gas blanketing as a basis of safety. The Limiting Oxygen Concentration test would define the oxygen concentration below which dispersed dust ignition is not possible. The data obtained can be used directly in the sizing of explosion vent or containment systems. It is usually found that there is some correlation between explosion severity and ignition sensitivity. If avoidance of ignition sources forms part of the basis of safety for handling Py Kar, consideration should be given to the conduct of ignition sensitivity tests.
Referenceopen allclose all
Six negative assays were recorded: No friction sensitivity was noted with the test item with a loading of 360 Newtons.
Six negative assays were recorded: No shock sensitivity was noted with the test item.
Six negative assays were recorded: No heat sensitivity was noted with the test item.
The test item was not considered to have explosive properties in the experimental conditions.
MINIMUM IGNITION ENERGY
The minimum ignition energy of Py Kar has been determined to be in the range of 5 - 6 mJ.
Comment : Ignition produced an orange flame and black smoke.
Full Test Results
Spark Energy (mJ) |
Weight Dispersed (g) |
Number of Dispersions |
Ignition? Yes (y) / No (n) |
Flame | Pressure |
1000 | 0.5 | 1 | y | Medium | High |
500 | 0.5 | 1 | y | Medium | Low |
100 | 0.5 | 1 | y | Medium | High |
60 | 0.5 | 1 | y | Large | Medium |
40 | 0.5 | 1 | y | Large | High |
25 | 0.5 | 1 | y | Medium | Medium |
15 | 0.5 | 20 | n | - | - |
20 | 0.5 | 1 | y | Medium | Low |
15 | 1.0 | 11 | y | Medium | Low |
10 | 1.0 | 11 | y | Medium | Low |
8 | 1.0 | 19 | y | Medium | Low |
6 | 1.0 | 20 | n | - | - |
6 | 2.0 | 20 | n | - | - |
6 | 3.0 | 6 | y | Large | High |
5 | 3.0 | 20 | n | - | - |
5 | 5.0 | 20 | n | - | - |
5 | 7.0 | 20 | n | - | - |
5 | 10.0 | * 20 | n | - | - |
5 | 2.0 | 20 | n | - | - |
5 | 1.0 | 20 | n | - | - |
5 | 0.5 | 20 | n | - | - |
* - Full dispersion chamber
EXPLOSION SEVERITY
Pmax = 8.8 bar @ 250 g.m-3
(dP/dt)max = 1139 bar.s-1 @ 250 g.m-3
Kst value = 309 bar.m.s-1
St class = 3
Ambient Temperature = 20°C
Comment
In accordance with the test procedure, the values reported above are the mean values of the maxima found in the three test series.
Full Test Results: mean of test series 1 - 3
Concentration (g.m-3) |
Pm (barg) |
(dP/dt)m (bar.s-1) |
60 | 6.1 | 267 |
125 | 7.6 | 749 |
250 | 8.8 | 1139 |
500 | 7.7 | 858 |
750 | 6.7 | 619 |
1000 | 6.4 | 557 |
Dust Explosion Risk
Minimum Ignition Energy (“MIE”, mJ): 5 - 6
Explosion severity (20 litre sphere):
- Maximum explosion pressure Pmax (bar g): 8.8
- Kst value (bar.m.s-1): 309
- St class: 3
Minimum Ignition Energy (MIE) – Tested ground
20 Litre Sphere Test (20L) – Tested ground
The results of testing are highly dependent on the composition and physical nature of the sample. In dust explosion testing, for example, the particle size distribution, moisture content, particle shape and preparation method can all markedly affect results. For this reason, any change in manufacturing / handling procedures or composition should be accompanied by a review of the relevant data. Chilworth Technology Ltd would be pleased to provide specific advice, including interpretation and application of experimental data. Site visits to discuss operational safety or to perform plant inspections and measurements can be arranged on request.
Description of key information
Resin acids and rosin acids, cobalt salts was not considered to have explosive properties in the experimental conditions.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Justification for classification or non-classification
Resin acids and Rosin acids, cobalt salts does not need to be classified according to CLP Regulation (EC) No 1272/2008.
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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