1 Scope
This standard specifies the determination method of 4-aminoazobenzene in dye products and the limit requirements of 4-aminoazobenzene in dye products.
This standard is applicable to the determination and limit of 4-aminoazobenzene in commercial dye, dye products, dye intermediate and textile dyeing auxiliaries by adopting gas chromatography/mass spectrography (GC-MS).
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies
GB/T 6682-2008 Water for Analytical Laboratory Use-Specification and Test Methods (ISO 3696: 1987, MOD)
GB/T 8170-2008 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
Foreword I
1 Scope
2 Normative References
3 Requirements
4 Principle
5 Determination Method
6 Determination Lower Limit, Recovery Rate and Precision
7 Test Report
Appendix A (Normative) 4-aminoazobenzene Types
Appendix B (Informative) Standard Gas Chromatogram of 4-Aminoazobenzene Ethyl Acetate
