Dimanganese trioxide

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

May 2017

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

Specific details on test material used for the study:

The test item contained 100 % particles which are smaller than 500 µm.

Contact with:

other: fibrous cellulose

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 180 s

Remarks on result:

other: flameless carbonization with slight development of smoke

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 180 s

Remarks on result:

other: carbonization with flame

Sample tested:

reference: 3:7 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

> 128.2 s

Remarks on result:

other: combustion with flame

Sample tested:

reference: 2:3 mixture potassium bromate + cellulose

Parameter:

mean burning time

Remarks on result:

not measured/tested

Remarks:

Due to the slow burning time of the test item / cellulose mixtures, additional testing of the reference mixtures potassium bromate / cellulose with mxing ratios 2:3 and 3:2 was not required.

Sample tested:

reference: 3:2 mixture potassium bromate + cellulose

Parameter:

mean burning time

Remarks on result:

not measured/tested

Remarks:

Due to the slow burning time of the test item / cellulose mixtures, additional testing of the reference mixtures potassium bromate / cellulose with mxing ratios 2:3 and 3:2 was not required.

Burning time of test item (five-fold determination):

ratio test item / cellulose [weight -%]	burning time t [s]	median burning time [s]
1:1	>180; >180; >180; >180; >180; -> flameless carbonization with slight development of smoke	t1: >180
4:1	>180; >180; >180; >180; >180; ->carbonization with flame	t2: >180

Burning time of reference item (five-fold determination, if applicable):

ratio potassium bromate / cellulose [weight -%]	burning time t [s]	median burning time [s]
1:1	>112; >128; >131; >127; >123; ->burning with flame	R1: >128,2
2:3	41; -*;-*;-*; -*; -> smoking combustion with flame	R2: -
3:2	41; -*;-*;-*; -*; ->heavily smoking combustion with flame	Re: -

*due to the clear results of the test item mixtures, additional testing was not required

Due to the slow burning time of the test item / cellulose mixtures, additional testing of the reference mixtures potassium bromate / cellulose with mxing ratios 2:3 and 3:2 was not required.

Interpretation of results:

other: No classifiaction as oxidising solid.

Conclusions:

The burning time of the test item mixtures with cellulose (4:1 and 1:1) is greater (> 180 s) than the burning time of the refernce mixture of potassium bromate and cellulose (3:7) (128.2 s). Therefore, the test item dimanganese trioxide does not have to be classified as oxidising solid according to:
-UN Transport Regulation (Division 5.1)
-GHS and EC 1272/2008 (CLP Regulation)

Executive summary:

The testing of the oxidising properties of dimanganese trioxide has been conducted according to UN Regulation Test O.1 (2009) by evaluating the burning times dimanganese trioxide / cellulose mixtures with the ratios of 4:1 and 1:1. The results were then compared to the reference mixture consisting of potassium bromate and cellulose (ratio 3:7). Testing with the potassium bromate / cellulose mixtures 2:3 and 3:2 were not performed, because the burning times of the mixtures of the test item with cellulose were higher than the burning time of the reference mixture 3:7.

According to the results the test item dimanganese trioxide does not have to be classified as oxidising solid according to:

-UN Transport Regulation (Division 5.1)

-GHS and EC 1272/2008 (CLP Regulation)

Description of key information

The testing of the oxidising properties of dimanganese trioxide has been conducted according to UN Regulation Test O.1 (2009) by evaluating the burning times dimanganese trioxide / cellulose mixtures with the ratios of 4:1 and 1:1. The results were then compared to the reference mixture consisting of potassium bromate and cellulose (ratio 3:7). Testingwith the potassium bromate / cellulose mixtures 2:3 and 3:2 were not performed, because the burning times of the mixtures of the test item with cellulose were higher than the burning time of the reference mixture 3:7.

According to the results the test item dimanganese trioxide does not have to be classified as oxidising solid according to:

-UN Transport Regulation (Division 5.1)

-GHS and EC 1272/2008 (CLP Regulation)

Key value for chemical safety assessment

Oxidising properties:

non oxidising