Standard No.:	GB/T 30773-2014
English Name:	Determination of residual phenol content in phenolic resins by gas chromatography
Chinese Name:	气相色谱法测定 酚醛树脂中游离苯酚含量
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
Source Content Issued by:	AQSIQ; SAC
Issued on:	2014-07-08
Implemented on:	2014-12-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	8000 words
Translation Price(USD):	240.0
Delivery:	via email in 1 business day

Determination of residual phenol content in phenolic resins by gas chromatography 1 Scope This standard specifies two methods, using gas chromatography, of measuring the residual phenol content of phenolic resins. This standard is applicable to the determination of residual phenol content in phenolic resins. 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. ISO 1042: 1998 Laboratory glassware - One-mark volumetric flasks ISO 6353-2: 1983 Reagents for chemical analysis - Part2: Specifications - First series ISO 10082: 1999 Plastics - Phenolic resins - Classification and test methods 3 Principle A test portion is dissolved in a suitable solvent and the residual phenol content determined by gas chromatography. 4 Terms and definitions For the purposes of this document, the terms and definitions contained in ISO 10082: 1999 and the following terms and definitions apply. 4.1 internal standard reference material added in known quantity to the test solution to determine the response factor for the phenol 4.2 mass ratio ratio of the mass of the phenol to the mass of an internal standard in the test solution   4.3 peak area ratio ratio of the phenol peak area to the internal-standard peak area

Foreword i 1 Scope 2 Normative references 3 Principle 4 Terms and definitions 5 Reagents and materials 6 Apparatus 7 Procedure 8 Expression of results 9 Precision 10 Test report Annex A (Informative) Examples of operating conditions Annex B (Informative) Examples of operating conditions Annex C (Informative) Precision