1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

06 December-19 December, 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

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)

Test material

Test material information

Constituent 1

Reference substance name:

1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives

EC Number:

235-521-4

EC Name:

1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives

Cas Number:

12262-32-7

Molecular formula:

not applicable

IUPAC Name:

Reaction product of 1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)- with sodium polysulfide, leuco derivatives

Test material form:

solid

Specific details on test material used for the study:

Expiry date 26 March 2020

Study design

Contact with:

powdered cellulose

Results and discussion

Test results (Oxidising solids)

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:

other: 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.

Remarks:

C.I. Leuco Sulfur Green 2 is not considered as an oxidizing substance.

Any other information on results incl. tables

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	-	-

* was measured in a separate study, under the study number: 805-155-1821

 

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 did not propagate
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	-	-	no ignition
90 : 10 %	18.00	2.00	-	-	no ignition

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

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. C.I. Leuco Sulfur Green 2 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. C.I. Leuco Sulfur Green 2 is not considered as an oxidizing substance.