AS 1767.2.4-1999

1 - AS 1767.2.4-1999 INSULATING LIQUIDS - TEST METHODS - DETECTION AND DETERMINATION OF SPECIFIED ANTI-OXIDANT ADDITIVES IN ....
4 - PREFACE
5 - CONTENTS
7 - 1. Scope
7 - SECTION I – METHODS FOR THE DETECTION OF ANTI-OXIDANT ADDITIVES
7 - 2. Detection of 2.6-di-tert-butyl-paracresol (DBPC) by thin layer chromatography
7 - 2.1 Summary of the method
7 - 2.2 Reagents
7 - 2.3 Equipment
7 - 2.4 Procedure
8 - 3. Detection of n-phenyl ... naphtylamine (PAN) and alpha-phenyl .. naphtylamine (PBN) by thin layer chromatography
8 - 3.1 Summary of the method
8 - 3.2 Reagents
8 - 3.3 Equipment
8 - 3.4 Procedure
9 - 4. Detection of anthranilic acid in new insulating oils by thin layer chromatography
9 - 4.1 Summary of the method
9 - 4.2 Reagents
9 - 4.3 Equipment
9 - 4.4 Procedure
10 - SECTION II – METHODS FOR THE DETERMINATION OF ANTI-OXIDANT ADDITIVES
10 - 5. Determination of 2.6-di-tert-butyl-paracresol
10 - 5.1 Quantitative determination by infra-red spectrophotometry
10 - 5.1.1 Summary of the method
10 - 5.1.2 Reagents
10 - 5.1.3 Equipment
10 - 5.1.4 Sample condition
11 - 5.1.5 Calibration
11 - 5.1.6 Reference oil
12 - 5.1.7 Procedure
12 - 5.1.8 Calculation
12 - 5.1.9 Precision
13 - 5.2 Semi-quantitative determination by thin layer chromatography
13 - 5.2.1 Summary of the method
13 - 5.2.2 Reagents
13 - 5.2.3 Equipment
13 - 5.2.4 Procedure
14 - 5.2.5 Results
14 - 6. Determination of n-phenyl--beta-naphtylamine by spectrophotometry
14 - 6.1 Summary of the method
15 - 6.2 Reagents
15 - 6.3 Equipment
15 - 6.4 Procedure
15 - 6.5 Calculation
15 - 6.6 Lower limit of detection
17 - APPENDIX ZZ - VARIATIONS TO IEC 60666 FOR APPLICATION IN AUSTRALIA

Sets out the methods to be used for the detection and determination of specified anit-oxidant additives in new hydrocarbon insulating oils. This Standard is based on but is not equivalent to, and has been reproduced from, IEC 60666:1979.

The methods described are to be used for the detection and determination of specified antioxidant additives in new hydrocarbon insulating oils. The detection methods are to be applied to assess whether or not a hydrocarbon insulating oil contains an anti-oxidant additive as specified by the supplier.The determination methods are used for the quantitative determination of anti-oxidant additives previously detected by the appropriate detection method.Note. - In certain cases, the methods described may also be used for oils in service.

First published as AS 1767.2.4-1999