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GB/T 28729-2025: Nitrous oxide
Status: Valid GB/T 28729: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 28729-2025 | English | 369 |
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Nitrous oxide
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GB/T 28729-2025
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| GB/T 28729-2012 | English | 209 |
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Nitrous oxide
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GB/T 28729-2012
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PDF similar to GB/T 28729-2025
Basic data | Standard ID | GB/T 28729-2025 (GB/T28729-2025) | | Description (Translated English) | Nitrous oxide | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G86 | | Classification of International Standard | 71.100.20 | | Word Count Estimation | 18,161 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 28729-2012 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 28729-2025: Nitrous oxide---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT28729-2025
ICS 71.100.20
CCSG86
National Standard of the People's Republic of China
Replaces GB/T 28729-2012
Nitrous oxide
Released on August 1, 2025
Implementation on February 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 28729-2012 “Nitrogen Oxide”. Compared with GB/T 28729-2012, except for structural adjustments and editorial changes,
In addition to the dynamic, the main technical changes are as follows.
--- Deleted the content related to the use, molecular formula and relative molecular mass of nitrous oxide in the scope (see Chapter 1,.2012 Edition
In Chapter 1 of the Regulations, a description of the use of nitrous oxide in the adipic acid tail gas recovery process for non-medical purposes was added to the scope of application (see
Chapter 1);
---Changed the technical requirements table, divided into two tables according to the medical and non-medical uses of nitrous oxide, and increased the non-medical use by 99.9%.
The purity requirements for nitrous oxide have been changed, and the limit values for ammonia, nitric oxide and nitrogen dioxide have been added.
Seek (see Chapter 4, Chapter 3 of the.2012 edition);
--- Added the requirements for nitrous oxide batching (see 5.1);
--- Changed the requirements for nitrous oxide sampling and sampling safety (see 5.2, 4.1 of the.2012 edition);
--- Changed the sampling requirements for nitrous oxide (see 5.3, 4.1 of the.2012 edition);
--- Changed the calculation method of nitrous oxide purity (see 6.1.2, 4.2 of the.2012 edition);
--- Added the method for determining the argon content in nitrous oxide (see 6.2);
--- Added the determination method of ammonia content, nitric oxide content and nitrogen dioxide content in nitrous oxide (see 6.3);
--- Added requirements for exhaust gas treatment (see 6.11);
--- Changed the requirements of the inspection rules and added provisions for numerical rounding (see Chapter 7, 4.1 of the.2012 edition);
--- Changed the marking requirements (see 8.1, 5.1 and 5.2 of the.2012 edition);
--- Changed the labeling requirements (see 8.2, 5.2 of the.2012 edition);
--- Changed the provisions on packaging, filling, transportation and storage (see Chapter 9, Chapter 5 of the.2012 edition);
--- Changed the safety information of nitrous oxide (see Chapter 10, 5.9 of the.2012 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Gas Standardization Technical Committee (SAC/TC206).
This document was drafted by. Dalian Date Gas Co., Ltd., Fujian Youlite Material Technology Co., Ltd., Chongqing Metrology Quality Inspection Research Institute
Research Institute, Fujian Detianchen New Materials Technology Co., Ltd., Chongqing Tonghui Gas Co., Ltd., Jiangsu Huazhong Gas Co., Ltd., China Shipbuilding (Handan)
Rui Special Gas Co., Ltd., Haohua Gas Co., Ltd. Southwest Branch, Shanghai Fanwei Instrument Equipment Co., Ltd., China Metrology and Testing
Society, China Institute of Metrology, China Industrial Gases Association, Shanghai Huaai Chromatography Analysis Technology Co., Ltd., Air Liquide (China)
Investment Co., Ltd., Shenyang Zhongfu Kejin Pressure Vessel Co., Ltd., Modern Science and Technology College of China Jiliang University, Southwest Research and Design Institute of Chemical Industry
Limited Company.
The main drafters of this document are. Li Fufen, Na Zhaoyu, Hu Delong, Wu Pan, Wu Junhui, Lai Xiaofeng, Cao Suying, Pan Zhenhuan, Fang Hua, Huang Jiadou,
Ye Yingheng, Hong Feng, Wang Cheng, Zhu Jiangtao, Zhang Shuai, He Bo, Yang Kang, Yang Yangzhongfu, Chen Yali, Tang Xiamei, Bo Chungan, Zhang Tiqiang, Wang Honghong, Guo Guangyu,
Yin Hao, Li Ming, Gong Bing, and Ma Yichun.
The previous versions of this document and the documents it replaces are as follows.
---First issued in.2012 as GB 28729-2012 "Nitrous Oxide";
---This is the first revision.
Nitrous oxide
1 Scope
This document specifies the technical requirements for nitrous oxide and the batching, sampling, testing methods, inspection rules, marking, labeling, and accompanying
The requirements for documentation, packaging, filling, transportation and storage are described, relevant test methods are described, and safety information for nitrous oxide is provided.
This document applies to the medical nitrous oxide obtained by thermal decomposition and purification of ammonium nitrate, the recovery and separation of ammonium nitrate thermal decomposition and adipic acid tail gas
The non-medical nitrous oxide is obtained after purification.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB 190 Dangerous Goods Packaging Marking
GB/T 191 Pictorial symbols for packaging, storage and transportation
GB/T 3634.2 Hydrogen Part 2.Pure hydrogen, high-purity hydrogen and ultrapure hydrogen
GB/T 4844 Pure helium, high-purity helium and ultra-pure helium
GB/T 5099 (all parts) Steel seamless gas cylinders
GB/T 5832.2 Gas analysis - Determination of trace moisture - Part 2.Dew point method
GB/T 6388 Shipping and Receiving Marks for Transport Packages
GB/T 7144 Color marking of gas cylinders
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 8979 Pure nitrogen, high-purity nitrogen and ultra-pure nitrogen
GB/T 8984 Gas analysis - Determination of trace carbon monoxide, carbon dioxide and hydrocarbons in gases - Flame ionization
Gas chromatography
GB/T 11640 Aluminum alloy seamless gas cylinders
GB/T 14193 Regulations for filling liquefied gas cylinders
GB 15258 Provisions for the Preparation of Chemical Safety Labels
GB/T 15382 General technical requirements for gas cylinder valves
GB/T 16483 Contents and order of items in safety data sheets for chemicals
GB/T 16804 Gas Cylinder Warning Labels
GB/T 27550 Safety technical requirements for gas cylinder filling stations
GB/T 28054 Seamless steel gas cylinder clusters
GB/T 30685 Technical requirements for upright road transport of gas cylinders
GB/T 33145 Large volume seamless steel gas cylinders
GB/T 34525 Safety regulations for the handling, loading and unloading, storage and use of gas cylinders
GB/T 43306 Guidelines for Gas Analysis Sampling
HG/T 5896 High Purity Air
JT/T 617 (all parts) Rules for the transport of dangerous goods by road
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