Thiophanate-methyl

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:

2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Duration of test (contact time):

>= 2 - <= 13 s

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

preliminary test

Remarks on result:

other: only 5 % burned with gentle yellow flame.

Key result

Sample tested:

test mixture as specified

Remarks:

2:1 sample-to-cellulose ratio

Parameter:

preliminary test

Remarks on result:

other: only 10 % burned gently woth yellow flame

Key result

Sample tested:

test mixture as specified

Remarks:

1:2 sample-to-cellulose ratio

Parameter:

preliminary test

Remarks on result:

other: only 10 % burned gently with yellow flame

Sample tested:

reference mixture as specified

Remarks:

3:2 barium nitrate/cellulose

Parameter:

burning rate

Result:

29 s

As neither mixture of 2:1, 1:1 or 1:2 test substance/cellulose burned to completion, the test item is considered to be non-oxidising.

Test substabce / cellulose ratio	Duration of combustion (seconds)	Observations
2:1	14	Tip of cone only burned with a gentle yellow sooty flame, remainder (approximately 90 %) did not burn
1:1	2	Tip of cone only burned with a gentle yellow sooty flame, remainder (> 95%) did not burn
1:2	13	Tip of cone only burned with a gentle yellow sooty flame, remainder (approximately 90%) did not burn

By comparison, the reference mixture (3:2 barium nitrate/cellulose) burned vigorously to completion in 29 seconds.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item is not oxidising.

Executive summary:

A study according to EU Method A.17 was performed to determine the oxidising properties of the test item. The test item was grounded to powder and mixed with powdered cellulose. Three ratios test item-to-cellulose were tested - 2:1, 1:1 and 1:2. Only 5 to 10 % of the formed cones of the test item burned gently with yellow flames. The test item did not show any oxidising properties.

Reference 2

Endpoint:

oxidising gases

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Reference 3

Endpoint:

oxidising liquids

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a solid

Description of key information

The test item has not to be classified as oxidising solid, oxidising liquid or oxidising gas.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

Oxidising gases

The test item is a solid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as oxidising gases.

Oxidising solids

A study according to EU Method A.17 was performed to determine the oxidising properties of the test item. The test item was grounded to powder and mixed with powdered cellulose. Three ratios test item-to-cellulose were tested - 2:1, 1:1 and 1:2. Only 5 to 10 % of the formed cones of the test item burned gently with yellow flames. The test item did not show any oxidising properties.

Additionally, according the screening procedures as described in Appendix 6 of the Recommendations on the Transport of dangerous goods Manual of Test and Criteria sixth revised editions United Nations 2015 for organic compounds, the classification procedure for oxidising substances of Division 5.1 need not to be applied if:

(a) The compound does not contain oxygen, fluorine or chlorine; or

(b) The compound contains oxygen, fluorine or chlorine and these elements are chemically bonded only to carbon or hydrogen.

 As the oxygen in the test item is solely chemically bonded only to carbon or hydrogen the classification procedure does not need to be applied.

Oxidising liquids

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as oxidising liquids.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No. 1272/2008

Based on the chemical structure and taking into account the provisions laid down in Regulation (EC) No 1272/2008 (CLP), as amended for the 15th time in Regulation (EU) 2020/1182, the substance is not considered to be classified for oxidising properties.