5,11,17,23,29,35,41,47-octa-tert-butyl-49,50,51,52,53,54,55,56-octahydroxy-2λ⁶,8λ⁶,14λ⁶,20λ⁶,26λ⁶,32λ⁶,38λ⁶,44λ⁶-octathianonacyclo[43.3.1.1³,⁷.1⁹,¹³.1¹⁵,¹⁹.1²¹,²⁵.1²⁷,³¹.1³³,³⁷.1³⁹,⁴³]hexapentaconta-1(49),3,5,7(56),9,11,13(55),15,17,19(54),21(53),22,24,27,29,31(52),33,35,37(51),39(50),40,42,45,47-tetracosaene-2,2,8,8,14,14,20,20,26,26,32,32,38,38,44,44-hexadecone; 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrahydroxy-2λ⁶,8λ⁶,14λ⁶,20λ⁶-tetrathiapentacyclo[19.3.1.1³,⁷.1⁹,¹³.1¹⁵,¹⁹]octacosa-1(25),3,5,7(28),9,11,13(27),15(26),16,18,21,23-dodecaen-2,2,8,8,14,14,20,20-octone

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study has been performed according to EC guidelines and according to GLP principles.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2007

Report date:

2007

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: European Economy Community (EEC), EEC-Directive 92/69 EEC, Part A, Methods for the Determination of Physico-Chemical properties, A.17: "Oxidizing Properties (solids)", EEC Publication No. L383, December 1992.

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

481-490-7

EC Name:

-

Molecular formula:

multi-constituent.

IUPAC Name:

5,11,17,23,29,35,41,47-octa-tert-butyl-49,50,51,52,53,54,55,56-octahydroxy-2λ⁶,8λ⁶,14λ⁶,20λ⁶,26λ⁶,32λ⁶,38λ⁶,44λ⁶-octathianonacyclo[43.3.1.1³,⁷.1⁹,¹³.1¹⁵,¹⁹.1²¹,²⁵.1²⁷,³¹.1³³,³⁷.1³⁹,⁴³]hexapentaconta-1(49),3,5,7(56),9,11,13(55),15,17,19(54),21(53),22,24,27,29,31(52),33,35,37(51),39(50),40,42,45,47-tetracosaene-2,2,8,8,14,14,20,20,26,26,32,32,38,38,44,44-hexadecone; 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrahydroxy-2λ⁶,8λ⁶,14λ⁶,20λ⁶-tetrathiapentacyclo[19.3.1.1³,⁷.1⁹,¹³.1¹⁵,¹⁹]octacosa-1(25),3,5,7(28),9,11,13(27),15(26),16,18,21,23-dodecaen-2,2,8,8,14,14,20,20-octone

Details on test material:

- Name of test material (as cited in study report): TC4ASO2
- Substance type: multi-constituent
- Physical state: white powder
- Analytical purity: 97.8%
- Composition of test material, percentage of components: 92.9% 4-tert-Butylsulfonylcalix(4)arene (CAS 204190-49-8)
4.9% 4-tert-Butylsulfonylcalix(8)arene
- Lot/batch No.: AYUI-1Y
- Expiration date of the lot/batch: 07 October 2007
- Stability under storage conditions: Stable
- Storage condition of test material: At room temperature in the dark

Study design

Contact with:

powdered cellulose

Results and discussion

Test results (Oxidising solids)

Test results (Oxidising solids) 1

Sample tested:

test mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.84 other: mm/s (migrated information)

Remarks on result:

other: Test in air atmosphere; suspected to be false positive.

Test results (Oxidising solids) 2

Sample tested:

reference mixture (not specified)

Remarks:

migrated information

Parameter:

maximum burning rate

Result:

0.8 other: mm/s (migrated information)

Remarks on result:

other: Test in air atmosphere

Any other information on results incl. tables

In an air atmosphere, the maximum burning rate was measured for the 10/90 (w/w) test substance/cellulose mixture: 0.84
mm/s. This is slightly higher than the maximum burning rate for the reference substance (0.80 mm/s). Because this result
was suspected to be false positive, additional tests were performed.

Test in inert atmosphere

An attempt was made to ignite the 70/30 (w/w) barium nitrate/cellulose pile using an electronic ignition source in a nitrogen atmosphere (oxygen content < 2%). Since the pile could not be ignited under these conditions, the test was repeated under an atmosphere containing approximately 10% oxygen (the atmosphere was generated by using a 1:1 mixture of air and pure nitrogen). The pile could not be ignited under these conditions. Thereafter, the oxygen content was increased until the pile ignited. The pile burned for about 5 seconds with a yellow/green flame and emitted sparks. Grey smoke was observed after the flame extinguished.

 

The test substance/cellulose mixture (10/90 (w/w)) could not be ignited using an electronic ignition source in a nitrogen atmosphere and in an atmosphere containing approximately 10% oxygen. The pile could neither be ignited when the oxygen content was increased to a value at which the 70/30 (w/w) barium nitrate/cellulose mixture was capable to cause a burning reaction. Based on this, it was concluded that the test substance has no oxidizing properties. 

 

Applicant's summary and conclusion

Interpretation of results:

other: no oxidising properties

Remarks:

Migrated information

Conclusions:

Based on the results of both tests and on the difference in burning behaviour, it was concluded that TC4ASO2 has no oxidizing properties in the sense that it cannot sustain a reaction with cellulose at a burning rate higher than that of a reference mixture or stimulate combustion of cellulose through a mechanism as found characteristic for substances having oxidizing properties.