GB/T 34711-2017 in English

VALID

Testing method for classification of chemically unstable gases

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 34711-2017
Document status:	VALID
Title in English:	Testing method for classification of chemically unstable gases
Title in Chinese:	化学不稳定性气体分类试验方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-11-01
Implemented on:	2018-05-01
ICS Classification:	13.300-Protection against dangerous goods
Chinese Classification:	A80-Marking, packaging, transport and storage in general
Professional Classification:	GB-National Standard
Related Keywords:	unstable gases introduction test method unstable gases classification basis test conditions judgment criteria result unstable gas mixture test unstable gas high temperature non-flammable no classification test
Related Topics:	test classification chemistry stable gas phase GB/T 34711-2017 Chemical stability of disulfiram acid unstable pcr unstable Stable strain method pcr instability Instability coefficient Experimental gas classification peak height instability GB/T+34711-2017 Method Validation Stability o3 instability instability experiment Monitoring is unstable Method Validation Stability Argon instability gas chemistry gas phase stability unstable pa secretion stability Aging test and long-term stability test unstable zone very unstable acid gas chemistry p0 instability Sheath gas instability carbon unstable experimental instability Unstable pressure Gas classification gas chemistry Gas pressure test unstable enzyme solution instability Unstable e GBT34711 GB/T 34711-2017 Unstable resolution classification test electrochemical stability window Gas control classification Chemical stability experiment execution The stability test box is not filled with water Powder chemical stability test Chemical degassing experimental method Standard gas stability Reagent stability verification method Electrochemical Stability Test Method Classification of immobilization methods What are the electrochemical classification methods? Classification method of chemical instruments and equipment in middle schools Liquid phase method is unstable Test method for hydrothermal stability of catalytic carrier The detection method is uniform, stable and non-stratified Calibration method for all stainless steel thermal stability tester Stability in methodological investigation Specific methods for serum stability testing Relevant material methodological stability requirements Methodological robustness and stability Liquid phase methodology verification failed Electrochemical methods for detecting gases Standard gas stability Methodological verification of stability of related substances

《GB/T 34711-2017化学不稳定性气体分类试验方法》由TC251（全国危险化学品管理标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

Test method for classification of chemically unstable gases

Classification basis	Test conditions	Judgment criteria	Result processing
Normal temperature and pressure test	20℃, 101.3 kPa	Pressure rise ratio f > 1.20	Classified as Class A chemically unstable gas
High temperature and high pressure test	65℃, corresponding initial pressure	Pressure rise ratio f > 1.20	Classified as Class B chemically unstable gas
Mixture test	Measured or calculated according to GB/T 27862	Concentration is below a specific limit and is non-flammable	No classification test is required

Explanation of professional terms and practical application cases

Chemical instability: The property of a gas to undergo dangerous reactions without external combustion support, resulting in increased temperature or pressure.

For example, in high temperature and high pressure tests, acetylene (C₂H₂) is highly chemically unstable due to the triple bond in its molecular structure and is prone to violent reactions. According to the concentration limits in Table A.1 and Table A.2, mixtures containing acetylene need to be classified at specific concentrations.

More samples: GB 18306-2015 JGJ 94-2008 JC/T 2453-2018

Sample only — not a preview of GB/T 34711-2017

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