Standard No.:	GB/T 31531-2015
English Name:	Determination of quinoline in dyestuffs and textile dyeing and finishing auxiliaries
Chinese Name:	染料及纺织染整助剂产品中喹啉的测定
Chinese Classification:	G55    Basic standards and general methods for dye
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2015-05-15
Implemented on:	2015-12-1
Status:	to be superseded
Superseded by:	GB/T 31531-2025 Determination of quinoline and isoquinoline in dyestuffs and textile dyeing and finishing auxiliaries
Superseded on:	2026-3-1
Target Language:	English
File Format:	PDF
Word Count:	3500 words
Translation Price(USD):	114.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the determination method of free quinoline content in dyestuffs and textile dyeing and finishing auxiliaries. This standard is applicable to each dosage forms of dyestuffs, dye products and textile dyeing and finishing auxiliaries. Structural formula: ... ... ... ... Molecular formula: C9H7N Relative molecular mass: 129.16 (according to international relative atomic mass in 2009) CAS RN: 91-22-5 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. GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 9722-2006 Chemical reagent - General rules for the gas chromatography 3 Determination methods 3.1 General requirements

Foreword i 1 Scope 2 Normative references 3 Determination methods 4 Minimum quantitation limit, recovery rate and precision 5 Test report