Disodium {sulfonylbis[4,1-phenylenediazene-2,1-diyl(1-ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-5,3-diyl)]}dimethanesulfonate

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

29-Nov-2010 to 17-Jan-2011

Reliability:

2 (reliable with restrictions)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Acid Yellow RN 2903

IUPAC Name:

Acid Yellow RN 2903

Details on test material:

Identification: Acid Yellow RN 2903
Batch Number: Vers. Kilo 6, 26.05.2009
Purity: 65.7 %
Expiry Date: August 01, 2015
Storage Conditions: At room temperature at about 20 °C

Study design

Contact with:

other: powdered cellulose

Duration of test (contact time):

s

Results and discussion

Any other information on results incl. tables

During the preliminary test the Acid Yellow RN 2903/cellulose mixture only burned for about
2-3 seconds, glowed under the ignition source and colored black. Underneath the black surface the unaltered test item/cellulose mixture remained. The barium nitrate/cellulose mixture during the same test burned for 66 seconds with a sizzling flame.

 

In order to confirm the results from the preliminary test, a main test was performed. For all prepared Acid Yellow RN 2903/cellulose mixtures only surface burning or no burning was observed and therefore no burning rates could be calculated. Therefore the test was stopped according to the guideline. In comparison: the fastest barium nitrate/cellulose mixture contained 50% barium nitrate.

Details of the individual measurements are given in Table 1 and Table 2.

Table 1       Burning rate of the barium nitrate/cellulose mixtures

Barium nitrate	Cellulose powder	Burning time	Burning rate
[%]	[%]	[s/200 mm]	[mm/s]
70	30	372	0.538
60	40	385	0.519
50	50	318	0.629*

 

* Fastest reference mixture (barium nitrate/cellulose)

 

Table 2       Burning rates of the Acid Yellow RN 2903mixtures

Acid Yellow RN 2903	Cellulose powder	Burning time	Burning rate	Reaction
[%]	[%]	[s/200 mm]	[mm/s]
10	90	-	-	Weak and broad flame, flame did not expand , surface colored black under the ignition source, underneath some unaltered residue
20	80	-	-	Flame extinguished after a few seconds, surface glowed, smoldered and colored black under the ignition source, underneath some unaltered residue, no ignition
30	70	-	-	Flame extinguished after a few seconds, surface glowed, smoldered and colored black under the ignition source, underneath some unaltered residue, no ignition
40	60	-	-	Flame extinguished after a few seconds, flame did not expand, surface smoldered and colored black under the ignition source, underneath some unaltered residue
50	50	-	-	No ignition, surface glowed and colored black under the ignition source, underneath some unaltered residue, the glow did not expand
60	40	-	-	No ignition, surface glowed and colored black under the ignition source, underneath some unaltered residue, glow did not expand
70	30	-	-	No ignition, surface glowed and colored black under the ignition source, underneath some unaltered residue, glow did not expand
80	20	-	-	No ignition, surface glowed and colored black under the ignition source, underneath some unaltered residue, glow did not expand
90	10	-	-	No ignition, surface glowed, foamed and colored black under the ignition source, underneath some unaltered residue, glow did not expand

 

RESULTS AND DISCUSSION

The determination of the oxidizing properties of Acid Yellow RN 2903 was performed in

accordance with the EEC Directive 92/69, EEC Publication No. L383, December 1992 and

Council Regulation (EC) No. 440/2008, Methods for the determination of physico-chemical

properties, A.17 “Oxidizing Properties (solids)”.

During the preliminary test the Acid Yellow RN 2903/cellulose mixture only burned for about

2-3 seconds, glowed under the ignition source and colored black. Underneath the black surface

the unaltered test item/cellulose mixture remained. The barium nitrate/cellulose mixture during

the same test burned for 66 seconds with a sizzling flame.

In order to confirm the results from the preliminary test, a main test was performed. For all

prepared Acid Yellow RN 2903/cellulose mixtures only surface burning or no burning was

observed and therefore no burning rates could be calculated. Therefore the test was stopped

according to the guideline. In comparison: the fastest barium nitrate/cellulose mixture contained

50% barium nitrate. Details of the individual measurements are given in Table 1andTable 2 (see above).

In conclusion, Acid Yellow RN 2903 has no oxidizing properties.

Applicant's summary and conclusion

Interpretation of results:

other: no oxidising properties

Remarks:

Migrated information

Conclusions:

Acid Yellow RN 2903 is considered to have no oxidizing properties.

Executive summary:

Acid Yellow RN 2903 is considered to have no oxidizing properties because all test item/cellulose mixtures only showed surface burning or no burning. Therefore no burning rates were calculated.