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EC number: 233-357-8 | CAS number: 10127-27-2
Oxidising properties
Administrative data
- 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
- Remarks:
- according to UN Manual of Tests and Criteria, Rev. 6 (2015)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test O.3 (Gravimetric test for oxidizing solids)
- Version / remarks:
- Rev. 6 (2015)
Test material
- Reference substance name:
- Sodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)]hydroxychromate(1-)
- EC Number:
- 233-357-8
- EC Name:
- Sodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)]hydroxychromate(1-)
- Cas Number:
- 10127-27-2
- Molecular formula:
- C16H11CrN5O8S.Na
- IUPAC Name:
- sodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)]hydroxychromate(1-)
Constituent 1
Results and discussion
Test results (Oxidising solids)open allclose all
- Sample tested:
- 1:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Result:
- > 180 s
- Sample tested:
- 4:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Result:
- > 180 s
- Sample tested:
- reference: 3:7 mixture potassium bromate + cellulose
- Parameter:
- mean burning time
- Result:
- 115 s
Any other information on results incl. tables
The test item was sieved over a 500 µm sieve. The content of residual moisture was determined at 50°C in vacuum. The test item had a content of residual moisture of 4.7 %.
Table 1: Burning times of calcium peroxide/cellulose mixtures 1:2
run |
mCaO2 /g |
mcellulose /g |
t20-80 /s |
BR20-80 /g/s |
observations |
1 |
10.00 |
20.02 |
51.0 |
0.24 |
- |
2 |
10.01 |
20.01 |
61.0 |
0.20 |
- |
3 |
10.04 |
19.99 |
46.2 |
0.26 |
- |
4 |
10.04 |
20.02 |
46.8 |
0.26 |
- |
5 |
10.00 |
20.01 |
40.4 |
0.30 |
- |
Table 2: Burning times of test item/cellulose mixtures 4:1
run |
mtest item /g |
mcellulose /g |
t20-80 /s |
BR20-80 /g/s |
observations |
1 |
24.00 |
6.02 |
152.2 |
0.024 |
Cone burned |
2 |
24.05 |
6.01 |
243.4 |
0.015 |
Cone burned |
3 |
24.01 |
6.02 |
282.6 |
0.013 |
Cone burned |
4 |
24.04 |
6.00 |
166.4 |
0.022 |
Cone burned |
5 |
23.98 |
6.04 |
171.4 |
0.021 |
Cone burned |
The mean burning rate of the mixture of the test item/cellulose 4:1 was 0.019 g/s. According to the UN manual the tolerable range is ± 10 % of the mean burning rate (0.017 – 0.021 g/s). As the burning rate of the test item mixture clearly differed from the relevant reference mixture the observed deviations had no influence on the final result.
Table 3: Burning times of test item/cellulose mixtures 1:1
run |
mtest item /g |
mcellulose /g |
t20-80 /s |
BR20-80 /g/s |
observations |
1 |
15.00 |
15.00 |
130.8 |
0.069 |
Cone burned |
2 |
15.07 |
15.02 |
218.2 |
0.041 |
Cone burned |
3 |
15.00 |
15.03 |
177.4 |
0.051 |
Cone burned |
4 |
15.01 |
15.00 |
245.2 |
0.037 |
Cone burned |
5 |
15.07 |
15.00 |
186.2 |
0.048 |
Cone burned |
The mean burning rate of the mixture of the test item/cellulose 1:1 was 0.049 g/s. According to the UNmanual the tolerable range is ± 10 % of the mean burning rate (0.044 – 0.054 g/s). As the burning rate of the test item mixture clearly differed from the relevant reference mixture the observed deviations had no influence on the final result.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- Based on the test results the test item does not have to be classified as oxidizing solid, division 5.1 of the UN Recommendations on the Transport of Dangerous Goods/Manual of Test and Criteria and according to Regulation (EC) 1272/2008, 2.14
- Executive summary:
The objective of this study was the determination of the oxidizing properties of the test item according to the
Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, 6thedition, New York and Geneva, 2015: Part III, Division 5.1, Section 34.4.3, Test O.3 Gravimetric test for oxidizing solids
The burning time of the mixtures of the test item with cellulose (4:1 and 1:1) was greater than the burning time of the reference mixture of calcium peroxide and cellulose (1:2). Based on the test results the test item does not have to be classified as oxidizing solid according to Regulation (EC) 1272/2008.
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