1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

October 1992- January 1993

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes

Contact with:

powdered cellulose

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

0.59 other: mm/s

Sample tested:

other: not specified maximum burning rate of cellulose only

Parameter:

other: maximum burning rate of cellulose only

Result:

0.8 other: mm/s

Remarks on result:

other: (sigmacell 50)

Sample tested:

reference mixture (not specified)

Parameter:

maximum burning rate

Result:

0.8 other: mm/s

Remarks on result:

other: cellulose/barium nitrate 40:60

Preliminary test:

The test mixture was prepared by mixing 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene thoroughly with dried cellulose in the proportions 2 of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene to 1 of cellulose by weight.

A plugged 35 mm glass funnel was filled with the test mixture and inverted onto an asbestos board.

An attempt was made to ignite the pile with a gas burner resulting in a burn time of 3 mins 56.8 sec. A pile of 3:2 barium nitrate: cellulose mixture of equal dimensions took 1 min 45.8 secs to burn.

Main test:

Test mixtures were prepared by mixing 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene in different proportions (10 % - 90 % of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene) with dried cellulose powder by weight. A barium nitrate reference mixture was prepared in the proportions 3 of barium nitrate to 2 of cellulose by weight. The test mixtures were then formed into olles 250 mm long and attempts made to ignite one end. After ignition, the first 30 mm of each pile was allowed to burn and the time (in seconds) recorded for the next 200 mm to burn.

Results:

Ratios/cellulose -1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene	Burn times	Burning rate
	(sec)	(mm/sec)
10:90	melted/ no burn
20:80	melted/no burn
30:70	1006	0.20
40:60	472	0.42
50:50	455	0.44
60:40	432	0.46
70:30	397	0.50
80:20	423	0.47
90:10	330	0.61
cellulose only (sigmacell 50)	359	0.56
cellulose + barium nitrate (40:60)	250	0.80

% substance by weight	Time taken for 200 mm to burn/seconds
	A	B	C	D	E	F	Mean	rate/mm/second
30	365	390	364	367	401	397	381	0.52
20	405	410	410	395	400	423	407	0.49
10	310	351	355	338	358	330	340	0.59

Interpretation of results:

GHS criteria not met

Conclusions:

No oxidising properties was determined for 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene.

Executive summary:

The determination of oxidsing properties was determined according to EU method A.17.

Test mixtures were prepared by mixing 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene in different proportions (10 % - 90 % of 1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene) with dried cellulose powder by weight. A barium nitrate reference mixture was prepared in the proportions 3 of barium nitrate to 2 of cellulose by weight. The test mixtures were then formed into olles 250 mm long and attempts made to ignite one end. After ignition, the first 30 mm of each pile was allowed to burn and the time (in seconds) recorded for the next 200 mm to burn.

1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene is non oxidising.

Description of key information

No oxidising properties were determined for 


  

1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene.

Key value for chemical safety assessment

Oxidising properties:

no

Justification for classification or non-classification

1,3-bis(3-methyl-2,5-dioxo-1H-pyrrolinylmethyl)benzene has no oxidising properties and hence no classification according to both Directive 67/548/EEC and GHS (Regulation EC 1272/2008) is required.