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EC number: 201-782-8 | CAS number: 87-90-1
- 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 properties
- Type of information:
- experimental study
- Adequacy of study:
- supporting 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:
- Safety Engineering Laboratories, Inc (SEL) contracted with the Chemical Manufacturers Association Chlorinated Pool Chemicals Panel (CMA) performed Trichlor storage fire tests. The purpose of the tests was to identify the differences in exposure fire performance between granular and tableted Trichloroisocyanuric acid (Trichlor) and provide baseline information with respect to the classification of solid oxidizers based on the increase in burning rate of combustibles in the fire.
- Interpretation of results:
- other: oxidising
- Remarks:
- Migrated information
- Conclusions:
- There was no observed significant increase in the overall burn rate of the ordinary combustibles (polyethylene and wood) in any of the Trichlor tests therefore the materials should be categorized according to NFPA definitions as a Class I oxidizer rather than a Class II oxidizer.
- Endpoint:
- oxidising properties
- Type of information:
- experimental study
- Adequacy of study:
- supporting 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:
- Bench scale and Intermediate scale burn tests were performed on both TCCA granules and tablets. The bench scale burn test is an enhanced version of the UN O.1 Test for Solid Oxidizers and the intermediate scale burn test was performed at the 24 or 48 lb (10.9 or 21.8 kg) scale in commercial packaging
- Contact with:
- powdered cellulose
- Interpretation of results:
- other: oxidising
- Remarks:
- Migrated information
- Conclusions:
- The results of the bench scale test, which is similar to the A.17 test, indicate that TCCA is an oxidizer. In intermediate scale burn tests, the active burning time of TCCA was 3 minutes or longer and TCCA did not cause a visual increase in the burning rate of the combustible test packaging. Therefore, TCCA should be categorized according to the proposed criteria and the NFPA definitions as a Class 1 oxidizer.
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.17 (Oxidising Properties (Solids))
- GLP compliance:
- yes
- Sample tested:
- reference mixture as specified
- Parameter:
- maximum burning rate
- Result:
- 1.08 mm/s
- Remarks on result:
- other: Reference mixture (barium nitrate and cellulose). Highest burning rate with 55 wt-%
- Sample tested:
- test mixture as specified
- Parameter:
- maximum burning rate
- Result:
- 3.5 mm/s
- Remarks on result:
- other: 70% of test item with cellulose
- Sample tested:
- reference mixture (not specified)
- Remarks:
- migrated information
- Parameter:
- maximum burning rate
- Result:
- 0.65 other: mm/s (migrated information)
- Remarks on result:
- other: Barium nitrate in an inert atmosphere (argon)
- Sample tested:
- test mixture (not specified)
- Remarks:
- migrated information
- Parameter:
- maximum burning rate
- Result:
- 2.56 other: mm/s (migrated information)
- Remarks on result:
- other: Test substance in an inert atmosphere (argon)
- Interpretation of results:
- Category 2 (oxidising solids) based on GHS criteria
- Conclusions:
- Trichloroisocyanuric acid is oxidizing
Referenceopen allclose all
The key physical indicators of burning rate from the screening test were mass loss rate and burning time calculated from the mass data. The key indicators of burning rate from the intermediate-scale test were peak convective heat release rate (Peak HRR conv) and the active burning time calculated from the radiant heat flux profile of the packaged test material (ie less the burner).
Table 1 summarizes the intermediate-scale fire exposure test data.
Table 1: Intermediate scale fire exposure test data.
Material |
Initial total mass (kg) |
Peak HRR conv |
Peak HRR CO2 |
Peak radiant heat flux (upper sensor) |
Peak radiant heat flux (lower sensor) |
Active burning time |
Mass loss rate |
Mass loss |
Peak surface temperature |
Peak temperature at bottom |
Peak temp inside pkg |
|
kg |
kW |
kW |
kW/m2 |
kW/m2 |
s |
Kg/min |
% |
C |
C |
C |
6 x 4 lb HDPE bottles (net weight of TCCA = 24 lb total) |
|||||||||||
TCCA (3 inch tablets) |
12.14 |
38 |
101 |
1.66 |
1.97 |
230 |
0.42 |
22 |
655 |
108 |
531 |
TCCA (1 inch tablets) |
12.27 |
39 |
86 |
1.51 |
1.63 |
320 |
0.36 |
36 |
618 |
101 |
812 |
6 x 4 lb HDPE bottles (net weight of TCCA = 24 lb total) |
|||||||||||
TCCA (granular) |
12.14 |
55 |
92 |
2.28 |
2.34 |
208 |
0.43 |
35 |
589 |
66 |
432 |
2 x 24 lb pails (net weight of TCCA = 48 lb total) |
|||||||||||
TCCA (tablets) |
24.50 |
21 |
49 |
1.25 |
1.23 |
440 |
0.34 |
16 |
461 |
235 |
279 |
Table 1: Reference mixture (barium nitrate and cellulose) with 40, 50, 55, 60 and 70 wt-% oxidizer (barium nitrate):
Barium nitrate [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
40 |
402 |
0.50 |
50 |
260 |
0.77 |
55 |
185 |
1.08 |
60 |
254 |
0.79 |
70 |
430 |
0.47 |
Table 2: Mixtures of test item with cellulose:
Test item [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
10, 20, 30 |
No tests were performed due to the fact that a mixture with 40 wt. -% test item could not be ignited with a flame |
-- |
40 |
The test item could not be ignited with a flame |
-- |
50 |
322 |
0.62 |
60 |
114 |
1.75 |
65 |
71 |
2.82 |
70 |
57 |
3.50 |
80 |
242 |
0.83 |
90 |
The test item could not be ignited with a flame, the test item melted |
-- |
Table 3: Mixtures with kieselguhr
Test item [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
55 |
The test item could not be ignited with a flame, no reaction was observed |
-- |
Barium nitrate [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
55 |
The barium nitrate could not be ignited with a flame, no reaction was observed |
-- |
Table 4: Mixtures in an inert dry atmosphere (Argon)
Test item [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
70 |
78 |
2.56 |
Barium nitrate [wt. - %] |
Burning time over 200 mm [s] |
Burning rate [mm/s] |
55 |
307 |
0.65 |
60 |
355 |
0.56 |
Description of key information
Three studies are available which demonstrate that TCCA is an oxidizer.
Key value for chemical safety assessment
- Oxidising properties:
- oxidising
Additional information
The key study is an oxidizing study which was performed according to EU Method A17 (Smeykal 2007). TCCA was oxidizing in this test.
Two further studies are available as supporting information which categorize TCCA as an oxidizer according to the National Fire Protection Association (NFPA) criteria.
The 1994 SEL report concluded that at worst TCCA should be categorized as a Class I oxidizer, which is defined by NFPA as 'An oxidizer that does not moderately increase the burning rate of combustible materials with which it comes into contact'.
Bench scale and Intermediate scale burn tests were performed on both TCCA granules and tablets (Buc 2009). The active burning time of TCCA was 3 minutes or longer. TCCA did not cause a visual increase in the burning rate of the combustible test packaging. The report concluded that TCCA should be categorized according to the proposed criteria and the NFPA definitions as a Class I oxidizer.
Justification for classification or non-classification
TCCA was shown to be an oxidizer in the A17 study and therefore warrants a classification as an oxidizer. For CLP TCCA should be classified as oxidizing category 2 with the hazard statement H272: May intensify fire; oxidizer.
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