EN 14666:2005 – Determination of tetraacetyl ethylene diamine (TAED) content in TAED granules Gas chromatographic method

1 Scope
This European Standard specifes a method for the determination of tetraacetyl ethylene diamine (TAED) content greater than or equal to 25 g/100 g in granules.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references,only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 607, Surface active agents and detergents – Methods of sample division.
3 Principle
The TAED granules are dissolved in acetonitrile, the intermal standard is added to this solution and finally it is injected to a gas chromatograph. A flame ionisation detector is used for detection. The results are calculated fromthe peak areas taking into account the response factors that are determined previously.
4 Reagents
During the analysis, unless otherwise specified, use only reagents of recognized analytical grade that have been checked in advance as not interfering with the analytical results.
4.1 Acetonitrile, C2H3N.
4.2 Stearic acid methyl ester, C1gH38O2, 2 99 % (m/m).
4.3 TAED, C1oHgeO2N2,≥99 % (m/m).
4.4 Internal standard solution
Weigh into a 100 ml volumetric flask 250 mg of the stearic acid methyl ester (4.2) to the nearest 0,1 mg and make up to the mark with acetonitrile (4.1).
4.5 Carrier gas, for gas chromatography.
4.6 Auxiliary gases, for gas chromatography.
5 Apparatus
Normal laboratory apparatus and the fllowing:
5.1 Gas chromatograph, with splitsplitless injector, flame ionisation detector and integrator or computer.
5.2 Fused silica capillary column, capable of the separation characteristics shown in Figure A1.
NOTE A 25 m length, 0,25 mm internal diameter and 0,25 um film thickness fused silica capillary column with 100% crosslinked dimethlpoliloxane stationary phase is advisable.
EN 14666:2005 – Determination of tetraacetyl ethylene diamine (TAED) content in TAED granules Gas chromatographic method