Yttrium trinitrate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Finished on 29 May 1995

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)

Deviations:

no

GLP compliance:

no

Contact with:

other: 1) sawdust 2) fibrous cellulose

Sample tested:

reference: 3:7 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

106 s

Remarks on result:

other: Result according to the current method.

Sample tested:

reference: 2:3 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

61 s

Remarks on result:

other: Result according to the current method.

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

254 s

Remarks on result:

other: Combustion with little flames.

Remarks:

Result according to the current method.

Key result

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Remarks on result:

mixture does not ignite and burn

Remarks:

Result according to the current method.

1) Test according to the UN method in place in 1995:

 

Sample	Ratio sample / sawdust	Burning time (s)				Observations
		N°1	N°2	N°3	Average
Yttrium trinitrate	4/1	-	-	-	-	Combustion is initiated near the wire but the reaction stops when the power is turned off; incomplete reaction
Yttrium trinitrate	1/1	-	-	-	-	Combustion is initiated near the wire but the reaction stops when the power is turned off; incomplete reaction
Ammonium persulfate	1/1	40	34	41	38

 

Combustion is initiated near the wire but the reaction stops when the power is turned off. The reaction is incomplete.

Therefore, yttrium trinitrate is not considered as an oxidising material according to the UN method in place in 1995.

2) Test according to the current UN method (see test result box):

Sample	Ratio sample / cellulose	Burning time (s)						Observations
		N° 1	N° 2	N° 3	N° 4	N° 5	Average
Yttrium trinitrate	4/1	-	-	-	-	-	-	No combustion
Yttrium trinitrate	1/1	243	348	171	241	266	254	Combustion with little flames
Potassium bromate	3/7	113	105	102	107	103	106
Potassium bromate	2/3	85	60	60	46	52	61

The mixture of yttrium trinitrate / cellulose in the ratio 4/1 does not burn.
The mixture of yttrium trinitrate / cellulose in the ratio 1/1 burns with little flames. All the burning times are higher than those of the reference mixture.

According to these results, yttrium trinitrate is not considered as oxidiser and should not be classified under Division 5.1.

Interpretation of results:

GHS criteria not met

Conclusions:

Yttrium trinitrate gave a negative result according to the UN method in place in 1995 and according to the current method.
Yttrium trinitrate is not considered as an oxidiser.

Description of key information

Lodel (1995; Klimisch 1) studied the oxidising properties of yttrium trinitrate according to UN Recommendations on the Transport of Dangerous Goods (Manual of Tests and Criteria, Third edition, 1995). The substance was observed not to be oxidising.

Key value for chemical safety assessment

Oxidising properties:

no

Justification for classification or non-classification

Yttrium trinitrate was demonstrated not to have oxidising properties and thus needs not to be classified for this endpoint according to the CLP criteria.