Disodium oxalate

Oxidising properties

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 19 of April 2018 to 25 of April 2018

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)

GLP compliance:

yes

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: 1601762
- Expiration date of the lot/batch: 2021
- Purity test date: 2016

Contact with:

powdered cellulose

Duration of test (contact time):

> 300 s

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 300 s

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 300 s

In the following table there were shown the results of determination for the reference substance with cellulose.

Mixture of potassium bromate and cellulose in mass ratio:	3:7	2:3	3:2
Mean burning time [s]	93.0 ± 3.8	52.0 ± 4.4	18.6 ± 0.9

Interpretation of results:

GHS criteria not met

Conclusions:

The oxidizing properties of magnesium oxalate was determined following the Test UN O.1 of the Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 6th.
The test item does not have oxidizing properties according to the test UN O.1.

Reference 2

Endpoint:

oxidising solids

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

REPORTING FORMAT FOR THE ANALOGUE APPROACH

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
The hypothesis is that properties are likely to be similar or follow a similar pattern as a result of the presence of a common organic part. This is a reasonable assumption for the majority of organic salt compounds (e.g. metal salts of some organic acids).

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
Analogue approach between sodium oxalate (TARGET CHEMICAL) and other oxalate salts such as magnesium oxalate (SOURCE CHEMICAL).
Purity of source and target substance : above 99%

3. ANALOGUE APPROACH JUSTIFICATION
Thus, this endpoint study record is part of a Weight of Evidence approach comprising a read-across and an experimental study. The experimental study was conducted s to fulfil the information requirements as further explained in the provided endpoint summary.

Reason / purpose for cross-reference:

read-across source

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 300 s

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 300 s

Interpretation of results:

GHS criteria not met

Conclusions:

An analogue approach between sodium oxalate salt and magnesium oxalate salt has been conducted. The conclusion of oxidising properties tested of the magnesium oxalate  salts can be extended to sodium oxalate without ambiguity.
The oxidizing properties of test item was determined following the Test UN O.1 of the Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 6th.
The test item does not have oxidizing properties according to the test UN O.1.

Executive summary:

An analogue approach between sodium oxalate salt and magnesium oxalate salt has been conducted.

The hypothesis is that properties are likely to be similar or follow a similar pattern as a result of the presence of a common organic part. This is a reasonable assumption for the majority of organic salt compounds (e.g. metal salts of some organic acids).

Indeed, the conclusion of oxidising properties tested of the magnesium oxalate  salts can be extended to sodium oxalate without ambiguity.

The oxidizing properties of test item was determined following the Test UN O.1 of the Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 6th.

The test item does not have oxidizing properties according to the test UN O.1.

Reference 3

Endpoint:

oxidising solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
Not considered as potentially oxidant based on chemical structure (i.e. The substance does not contain fluorine or chlorine, contains oxygen, but chemically bonded only to carbon or hydrogen).

Description of key information

An analogue approach between sodium oxalate salt and magnesium oxalate salt has been conducted. The conclusion of oxidising properties tested of the magnesium oxalate  salts can be extended to sodium oxalate without ambiguity.

The oxidizing properties of test item was determined following the Test UN O.1 of the Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 6th.

The test item does not have oxidizing properties according to the test UN O.1.

Key value for chemical safety assessment

Oxidising properties:

non oxidising