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Diss Factsheets

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June-September 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
Version / remarks:
UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 7th rev.ed., 2019 (UN-MTC)
Deviations:
no
GLP compliance:
not specified
Specific details on test material used for the study:
d(0.5):0.67 µm
BET 133 m²/g
Contact with:
powdered cellulose
Duration of test (contact time):
> 180 s
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
108 s
Remarks on result:
other: burn-off without flames
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
73 s
Remarks on result:
other: burn-off without flames

The sample was a powder according to the sieve analysis 26% of the particles were smaller than 500 µm. The sample was ground for 5 minutes. After grinding, 98% of the particles are smaller than 500 µm. The ground sample was used.

Reference mixtures (ratio of potassium to cellulose (by mass):

3:7* - mean burning time (n=5) 129 s (burn-off with flames)

2:3* - mean burning time (n=5) 53s (burn off with flames)

*based on the fast burning times of the sample-to-cellulose mixture (4:1) no testing of other reference mixtures was necessary

Interpretation of results:
Category 3 (oxidising solids) based on GHS criteria
Conclusions:
Comparing the mean burning times of the sample mixtures with cellulose (t1 and t2) with the mean burning time of the reference mixture (R1), t1 or t2 are
Executive summary:

Palladium dihydroxide is tested for oxidising properties using UN-Test O.1. Comparing the mean burning times of the sample mixtures with cellulose (t1 and t2) with the mean burning time of the reference mixture (R1), t1 or t2 are <R1. Therefore, it is concluded that palladium dihydroxide fulfils the classification criteria of Division 5.1 "Oxidizing substances", Packing group III, according to the Transport classification or hazard class 'oxidising solids', category 3, according to CLP.

Description of key information

Palladium dihydroxide is tested for oxidising properties using UN-Test O.1. Comparing the mean burning times of the sample mixtures with cellulose (t1 and t2) with the mean burning time of the reference mixture (R1), t1 or t2 are <R1. Therefore, it is concluded that palladium dihydroxide fulfils the classification criteria of Division 5.1 "Oxidizing substances", Packing group III, according to the Transport classification or hazard class 'oxidising solids', category 3, according to CLP.

Key value for chemical safety assessment

Oxidising properties:
oxidising

Additional information

Justification for classification or non-classification

Palladium dihydroxide fulfils the classification criteria of Division 5.1 "Oxidizing substances", Packing group III, according to the Transport classification or hazard class 'oxidising solids', category 3, according to CLP.