Standard No.:	GB/T 19941-2005
English Name:	Leather and fur-Chemical tests-Determination of formaldehyde content
Chinese Name:	皮革和毛皮 化学试验 甲醛含量的测定
Chinese Classification:	Y46    Furs and leathers
Professional Classification:	GB    National Standard
ICS Classification:	59.140.30 59.140.30    Leather and furs 59.140.30
Issued by:	AQSIQ, SAC
Issued on:	2005-09-26
Implemented on:	2006-4-1
Status:	superseded
Superseded by:	GB/T 19941.1-2019 Leather and fur—Determination of formaldehyde content—Part 1: High performance liquid chromatography method GB/T 19941.2-2019 Leather and fur—Determination of formaldehyde content—Part 2: Colorimetric method
Superseded on:	2020-7-1
Superseding:	GB/T 19941.2-2019 Leather and fur—Determination of formaldehyde content—Part 2: Colorimetric method
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

This standard specifies the method for the determination of free and hydrolyzed formaldehyde content in leather and fur products. This standard is applicable to various of leather and fur as well as their products.

1 Scope 1 2 Normative Reference 1 3 Preparation and Standardization of Formaldehyde Stock Solution 1 3.1 Reagents 1 3.2 Preparation of Formaldehyde Stock Solution 2 3.3 Calculation of Formaldehyde Stock Solution Concentration 2 4 Chromatographic Method (HPLC) 2 4.1 Principle 2 4.2 Reagents and Materials 2 4.3 Apparatus 3 4.4 Procedures 3 5 Spectrophotometric Method 5 5.1 Principle 5 5.2 Reagents and Materials 5 5.3 Apparatus 5 5.4 Procedures 6 6 Expression of Results 8 7 Test Report 9 Appendix A (Informative) Feasibility of the Test Methods 10 A.1 Reliability of the HPLC Method 10 A.2 Reliability of the Spectrophotometric Method 10 Appendix B (Informative) Comparison Between the Chapter and Article Numbers in This Standard and the One in ISO/TS 17226: 2003 11 Appendix C (Informative) Technical Differences Between this National Standard and ISO/TS 17226: 2003 and the Reasons Hereof 13