Carbonic acid disodium salt, reaction products with aniline, 4-nitrobenzenamine, p-phenylenediamine, sodium sulfide, sulfur and p-toluidine

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 December - 19 December, 2016

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:

31 May, 2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Key result

Sample tested:

test mixture as specified

Remarks:

Oxidiser cellulose-mixtures containing 10 to 90 % weight of oxidiser in 10 % increments were prepared.

Parameter:

burning time of reaction over a distance of 200 mm

Remarks on result:

mixture does not ignite and burn

The cone-shaped pile formed during the Preliminary Test could not be ignited therefore the Main Test was performed.The maximum burning rate of the test item in different mixtures was found to be lower than the burning rate of the reference mixture in the Main Test. Yellow 22 is not considered as an oxidizing substance.

Reference measurement

Ratio Ba(NO3)2: Cellulose	Weight Ba(NO3)2(g)	Weight Cellulose (g)	Burning time (sec)	Burning rate (mm/sec)
10 : 90 %	2.00	18.00	527	0.38
20 : 80 %	4.00	16.00	457	0.44
30 : 70 %	6.00	14.00	401	0.50
40 : 60 %	6.00	9.00	463	0.43
50 : 50 %	10.00	10.00	469	0.43
60 : 40 %	9.00	6.00	519	0.39
70 : 30 %	21.00	9.00	751	0.27
80 : 20 %	40.00	10.00	-	-
90 : 10 %	45.00	5.00	-	-

Main Test

Ratio Test item : Cellulose	Weight Test item (g)	Weight Cellulose (g)	Burning time (sec)	Burning rate (mm/sec)	Type of burning
10 : 90 %	2.00	18.00	-	-	ignited but the burnt part was less than 20 cm
20 : 80 %	4.00	16.00	-	-	ignited but did not propagate
30 : 70 %	6.00		14.00		-		-		ignited but did not propagate
40 : 60 %	12.00	18.00	-	-	no ignition
50 : 50 %	15.00	15.00	-	-	no ignition
60 : 40 %	18.00	12.00	-	-	no ignition
70 : 30 %	14.00	6.00	-	-	no ignition
80 : 20 %	16.00	4.00	-	-	ignited but did not propagate
90 : 10 %	18.00	2.00	-	-	ignited but did not propagate

Interpretation of results:

GHS criteria not met

Conclusions:

Yellow 22 is not considered as an oxidizing substance.

Executive summary:

The purpose of this study was to investigate the oxidizing properties of the test item.

The maximum burning rate of the test item in different mixtures was found to be lower than the burning rate of the reference mixture in the Main Test. Yellow 22 is not considered as an oxidizing substance.

Description of key information

The purpose of this study was to investigate the oxidizing properties of the test item. The maximum burning rate of the test item in different mixtures was found to be lower than the burning rate of the reference mixture in the Main Test. Yellow 22 is not considered as an oxidizing substance.

Key value for chemical safety assessment

Oxidising properties:

non oxidising