1,1'-(methylenedi-4,1-phenylene)bis(3-butylurea)

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:

1993-11-23 to 1994-09-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

EC 92/69

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

Analytical purity: >= 99.65 %
Lot/batch No.: 93.166

Contact with:

powdered cellulose

Key result

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

2.02 mm/s

Key result

Sample tested:

reference mixture (not specified)

Parameter:

maximum burning rate

Result:

2.12 mm/s

Results

Preliminary study:

A weak reaction was noted: evolution of white smoke, blackening of the test article. No inflammation was noted.

Main study

First series of tests

 

Mixture (% W/W) Test article/ cellulose	Observations	Duration of combustion/ 200 mm	Burning rate (mm/sec)
10/90	blackening of the test article, white smoke	98.50 sec	2.03
20/80	blackening of the test article, white smoke	117.51 sec	1.70
30/70	blackening of the test article, white smoke	122.16 sec	1.64
40/60	blackening of the test article, white smoke	131.68 sec	1.52
50/50	blackening of the test article, white smoke	140.86 sec	1.42
60/40	blackening of the test article, white smoke	164.45 sec	1.22
70/30	blackening of the test article, white smoke	186.08 sec	1.07
80/20	blackening of the test article	243.69 sec	0.82
90/10 *	weak reaction ; extrusion of test article and formation of black balls on surface ; evolution of black smoke	259.54 sec	0.77

*test performed twice for confirmation ; the second test showed a combustion of 241.09 sec/200 mm.

 

Second series of tests

The main study was repeated 6 times with the mixtures 10/90, 20/80 and 30/70:

Mixture (% W/W) Test article/ cellulose		Observations		Duration of combustion/ 200 mm		Burning rate (mm/sec)		Maximum burning rate (mm/sec)
10/90 10/90 10/90 10/90 10/90 10/90		- - - - - -		108.71 sec 106.59 sec 105.13 sec 120.69 sec 101.50 sec 99.00 sec		1.84 1.88 1.90 1.66 1.97 2.02		2.02
Mean:                     1.88 Maximum difference between burning rates and mean:                      12 %
20/80 20/80 20/80 20/80 20/80 20/80		- - - - - -		123.00 sec 119.00 sec 112.00 sec 121.73 sec 124.39 sec 127.50 sec		1.63 1.68 1.79 1.64 1.61 1.57		1.79
Mean:                     1.65 Maximum difference between burning rates and mean:                      8 %
30/70 30/70 30/70 30/70 30/70 30/70		- - - - - -		151.53 sec 132.65 sec 123.13 sec 150.45 sec 132.61 sec 128.86 sec		1.32 1.51 1.62 1.33 1.51 1.55		1.62
Mean:                     1.47 Maximum difference between burning rates and mean:                      10 %
	Reference mixture (% W/W) Barium nitrate/ cellulose		Observations		Duration of combustion/ 200 mm		Burning rate (mm/ sec)
	60/40		-		94.54 sec		2.12

N.B.: the reference mixture 60/40 (barium nitrate/ cellulose - % (W/W) was determined as presenting the fastest burning rate during the last determination at the laboratory.

Interpretation of results:

GHS criteria not met

Conclusions:

HAT ISO was tested for oxidising properties according to EU Guideline A 17. HAT ISO did not present any oxidizing properties in this test. Therefore, no classification and labelling is required according to Regulation 1272/2008/EEC (CLP).

Executive summary:

HAT ISO was tested for oxidising properties according to EU Guideline A 17. The test article and a defined combustible substance are mixed in various ratios. Each mixture is then formed into a pile and the pile is ignited at one end . The maximum burning rate determined is compared with the maximum burning rate of the reference mixture (barium nitrate). HAT ISO did not present any oxidizing properties in this test.

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 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 liquid.

Oxidising solids

HAT ISO was tested for oxidising properties according to EU Guideline A 17. The test article and a defined combustible substance are mixed in various ratios. Each mixture is then formed into a pile and the pile is ignited at one end . The maximum burning rate determined is compared with the maximum burning rate of the reference mixture (barium nitrate). HAT ISO did not present any oxidizing properties in this test.

Justification for classification or non-classification

HAT ISO was tested for oxidising properties according to EU Guideline A 17. HAT ISO did not present any oxidizing properties in this test. Therefore, no classification and labelling is required according to Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) 2019/521.