Standard No.:	GB/T 32684-2016
English Name:	Plastics一Phenolic resins Determination of free formaldehyde content
Chinese Name:	塑料 酚醛树脂 游离甲醛含量的测定
Chinese Classification:	G31    Basic standards and general methods for synthetic resin and plastic
Professional Classification:	GB    National Standard
ICS Classification:	83.080.01 83.080.01    Plastics in general 83.080.01
Issued by:	AQSIQ; SAC
Issued on:	2016-06-14
Implemented on:	2017-1-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	100.0
Delivery:	via email in 1 business day

Plastics - Phenolic resins - Determination of free formaldehyde content 1 Scope This standard specifies the methods for determining the free formaldehyde content in phenolic resins and its modified resins. This standard is applicable to the determination of free formaldehyde content in phenolic resins and its modified resins. The result only represents the actual free formaldehyde content in the resin during determination, and has no direct relationship with the free formaldehyde content during or after resin processing. 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 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling (GB/T 3186-2006, ISO 15528:2000, IDT) GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 free formaldehyde formaldehyde that is present in unbound form as formaldehyde, formaldehyde dihydrate (dihydroxymethylene) or polyoxymethylene in a condensation resin  

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Test methods 5 Test report