Standard No.:	FZ/T 50014-2008
English Name:	Method for the determination of residual sulphur in viscoce fibres-direct iodimetry
Chinese Name:	纤维素化学纤维残硫量测定方法 直接碘量法
Chinese Classification:	W50    Chemical fibre in general
Professional Classification:	FZ    Professional Standard - Textile
ICS Classification:	59.060.01 59.060.01    Textile fibres in general 59.060.01
Source Content Issued by:	NDRC
Issued on:	2008-02-01
Implemented on:	2008-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	60.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the method for the determination of residual sulphur by oxidation reduction - direct iodimetry. This standard is applicable to the fibers prepared by viscose process. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 601 Chemical Reagent - Preparations of Standard Volumetric Solutions GB/T 4146 Textile Terms and Terminology (Parts of Chemical Fibers) GB/T 8170 Rules for Rounding off of Numerical Values GB/T 14334-2006 Sampling Method for Man-made Staple Fibres

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Theory 5 Reaction Formula 6 Reagents and Materials 7 Apparatus 8 Sampling 9 Testing Environment 10 Analysis Procedures 11 Result Calculation 12 Testing Report Annex A (Informative) Preparation of Iodine Standard Titration Solution