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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From April 02, 2018 to April 23, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.21 (Oxidising Properties (Liquids))
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: Oxidation/Reduction (OCSPP 830.6314)
Deviations:
no
GLP compliance:
yes
Contact with:
monoammonium phosphate
Key result
Sample tested:
other: color change in combination with otehr chemical substances
Parameter:
other: Colur change
Remarks on result:
other: No oxidising properties

Over the 24-hour period any evidence of chemical incompatibility (hissing, fuming and bubbling, popping, evolution of flame, splattering or another violent reaction) or colour change observed can be summarized as follows:

Reactant

Chemical Incompatibility

Color Change

Water

None observed

Initial orange mixture of gel and liquid became clear orange gel after 1 hour. No further colour changes over 24 hours.

Monoammonium phosphate

None observed

No color change over 24 hours; remained light orange mixture of gel and liquid

Turpentine Oil

None observed

No color change over 24 hours; remained light orange mixture of solid and liquid

Potassium Permanganate

Temperature increase from 21.7 °C to a maximum of 42.4 °C

Dark brown mixture became black paste within 1 minute. No further colour changes over 24 hours.

Zinc powder

None observed

Grey mixture observed after ~ 15 seconds. No further color change over 24 hours.

No significant temperature increase (an increase of 5 °C or more) was observed when the Test Article was combined at a ratio of 1:1 with water, monoammonium phosphate, oil of turpentine, and zinc metal; no colour change was observed with exception of water where the original mixture of orange gel and liquid, became a clear orange gel after 1 hour.

When combined with potassium permanganate, the temperature increased from 21.7 °C at the start of the test to a maximum of 42.4 °C within ~ 15 seconds of mixing. The mixture turned from a dark brown mixture to a black paste after 1 minute. After 24 hours the sample temperature was 22.0°C.

 

Table2        Observations of the Test Article in Water

Time

Observation

Sample Temperature (°C)

After ~ 15 sec mixing

Orange mixture of gel and liquid

20.7

1 minute

No change

20.7

2 minutes

No change

21.0

3 minutes

No change

21.2

4 minutes

No change

21.4

5 minutes

No change

21.5

15 minutes

No change

22.0

1 hour

Clear orange gel

22.2

24 hours

Clear orange gel

21.9

Note: Room temperature was 22.5°C at the beginning and 22.0°C at the end of the testing period.

 

Table3        Observations of the Test Article in Monoammonium Phosphate

Time

Observation

Sample Temperature (°C)

After ~ 15 sec mixing

Light orange mixture of gel and liquid

21.1

1 minute

No change

20.9

2 minutes

No change

21.0

3 minutes

No change

21.0

4 minutes

No change

21.1

5 minutes

No change

21.2

15 minutes

No change

21.9

1 hour

No change

22.1

24 hours

Light orange mixture of gel and liquid

22.0

Note: Room temperature was 22.3°C at the beginning and 22.0°C at the end of the testing period.

Table4        Observations of the Test Article in Potassium Permanganate

Time

Observation

Sample Temperature (°C)

After ~ 15 sec mixing

Dark brown mixture

42.4

1 minute

Black paste

39.4

2 minutes

No change

35.8

3 minutes

No change

33.4

4 minutes

No change

31.5

5 minutes

No change

29.8

15 minutes

No change

24.1

1 hour

No change

22.5

24 hours

Black paste

22.0

Note: Room temperature was 21.7°C at the beginning and 22.3°C at the end of the testing period.

Table5        Observations of the Test Article in Turpentine Oil

Time

Observation

Sample Temperature (°C)

After ~ 15 sec mixing

Orange mixture of solid and liquid

20.0

1 minute

No change

19.3

2 minutes

No change

19.7

3 minutes

No change

20.1

4 minutes

No change

20.3

5 minutes

No change

20.6

15 minutes

No change

21.9

1 hour

No change

22.3

24 hours

Orange mixture of solid and liquid

21.9

Note: Room temperature was 21.8°C at the beginning and 21.9°C at the end of the testing period.

Table6        Observations of the Test Article in Zinc Metal Powder

Time

Observation

Sample Temperature (°C)

After ~ 15 sec mixing

Grey mixture

22.8

1 minute

No change

22.7

2 minutes

No change

228

3 minutes

No change

22.8

4 minutes

No change

22.8

5 minutes

No change

22.8

15 minutes

No change

22.6

1 hour

No change

22.2

24 hours

Grey mixture

22.0

Note: Room temperature was 22.3°C at the beginning and 21.9°C at the end of the testing period.

 

Interpretation of results:
other: CLP criteria not met
Conclusions:
Under the study conditions, the test substance is not a oxidiser.
Executive summary:

The oxidation/reduction of the liquid test substance was determined according to OCSPP 830.6314 and EU Method A.21, in compliance with GLP. Over the 24 h period no evidence of chemical incompatibility (hissing, fuming and bubbling, popping, evolution of flame, splattering or another violent reaction) and no colour changes were observed with reactants with the exception that the contents of the test tube containing the test substance in water where the original mixture of orange gel and liquid, became a clear orange gel after 1 h and with potassium permanganate became black paste after 1 minute of mixing. No significant temperature increase (an increase of 5 °C or more) was observed when the test substance was combined with each of the reactants, with exception of potassium permanganate, where the temperature increased from 21.7°C to a maximum of 42.4°C within ~ 15 seconds of mixing. No significant temperature increase (an increase of 5 °C or more) was observed when the test substance was combined with each of the reactants, with exception of potassium permanganate, where the temperature increased from 21.7 °C to a maximum of 42.4 °C within ~ 15 seconds of mixing. Under the study conditions, the test substance is not a oxidiser (Meghan, 2018).

Description of key information

The oxidising properties were determined according to OCSPP 830.6314 and EU Method A.21 (Meghan, 2018).

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification

Based on the study result, the test substance was considered as not oxidising and not classified according to CLP (EC 1272/2008) criteria.