Reaction product of acid red 143 (free acid) or the respective sodium salt (e.g Lansyn red F-5B) (UVCB) with Tetrabutylammonium bromide (CAS nr.: 1643-19-2) resulting in a mixture of AR143-(TBN)2 (Main component), AR143-(TBN), AR143-(TBN)3, AR143-(TBN) without alkyl tail, AR143-(TBN)2 without alkyl tail.Chemical name main component AR143-(TBN)2:di-(tetra-n-butylammonium) salt of 1-benzoyl-4-[4'-(1'',1''-dimethylpropyl)-phenoxy]-6-phenylamino-2,7-dioxo-2,7-dihydro-3H-naphtho(1,2,3-de)quinolin, disulfonic acid

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

15/05/2008 - 29/06/2008

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

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

Version / remarks:

The purpose of this study was the determination of the oxidizing properties of the test item according to the consolidated version of Council Directive 67/548/EEC Annex V,
Part A: Methods for the determination of physico-chemical properties. A. 17. Oxidizing properties.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

473-100-9

EC Name:

-

Details on test material:

- Sample-No: AR-143-MTP
- Empirical formula: C78H66N2010P2S2
- Molecular weight: 1317.48 glmol
- Purity: > 99 % [a/a] Prima 1
- Physical state: Red solid
- Storage conditions: ambient temperature

Study design

Contact with:

other: Cellulose microcrystalline (Avicel(c))

Duration of test (contact time):

>= 5 - <= 15 min

Results and discussion

Test results (Oxidising solids)

Key result

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

0.79 mm/s

Remarks on result:

other: The maximum burning rate of the reference mixture of cellulose and barium nitrate was 0.84 mm/s.

Applicant's summary and conclusion

Conclusions:

The test item has no oxidizing properties in the sense of the consolidated version of Council Direc- tive 67/548/EEC Annex V, Method A.17.

Executive summary:

Preliminary test:

Two test mixtures with the test item and cellulose 2:1 burned not down, the flame extinguished after approximately one second.

Three test mixtures with barium nitratelcellulose 2:1 burned down completely in 85, 88 and 97 s. Due to the results of the preliminary test the full test had to be performed.

Main test:

Five tests were performed for the reference mixture with40, 50, 55, 60 and 70 percent oxidizer.

The highest burning rate 0.84 mm/s was found for the mixture with 55% oxidizer
Mixtures of the test item with cellulose were prepared in10%-increments. Additional tests with 5 and 100 wt. % test item and pure cellulose were performed.

Due to the fact that the mixture with 20% of test item burned slower and mixtures with 30 and 50% the flame went out or could not be ignited, no tests were performed for mixtures with 40, 60, 70, 80 and 90%.

Six tests were performed for the mixtures with the highest burning rates of 5 and 10 wt.% of test item.

The maximum burning rate of the mixtures of the test item and cellulose (0.79 mm/s) was less than the maximum burning rate of the reference mixture of cellulose and barium nitrate (0.84 mm/s)