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GB/T 18826-2016: 1, 1, 1, 2-Tetrafluoroethane (HFC-134a) for industrial use
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 18826-2016	English	279	Add to Cart	3 days [Need to translate]	1, 1, 1, 2-Tetrafluoroethane (HFC-134a) for industrial use
GB/T 18826-2002	English	519	Add to Cart	3 days [Need to translate]	1, 1, 1, 2-Tetrafluoroethane for industrial use

GB/T 18826-2016: 1, 1, 1, 2-Tetrafluoroethane (HFC-134a) for industrial use

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1, 1, 1, 2-Tetrafluoroethane (HFC-134a) for industrial use ICS 71.080.20 G17 National Standards of People's Republic of China Replace GB/T 18826-2002 Industrial 1,1,1,2-tetrafluoroethane (HFC-134a) 2016-10-13 released 2017-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 18826-2002 "Industrial 1,1,1,2-tetrafluoroethane (HFC-134a)", and GB/T 18826-2002 In addition to editorial changes, the main technical differences are as follows. --- modified the description of "traits" (see 3.1,.2002 edition 3.1); - excellent product additional halogenated unsaturated hydrocarbon index, 1,1,1,2-tetrafluoroethane mass fraction from 99.9% to 99.90%, halogen The unsaturated hydrocarbon index is set to 0.0040%, the evaporation residue index is changed from 0.01% to 0.005%; the qualified product 1,1,1,2-tetrafluoro Ethylene content was changed from 99.5% to 99.50%, and the moisture index was changed from 0.005% to 0.001% (see 3.2,.2002) Of 3.2); - a modified test method for traits (see 4.1.2,.2002, 4.1); - modified chromatographic operating conditions for the determination of 1,1,1,2-tetrafluoroethane, quantitative methods and typical chromatograms (see 4.3 and appendix A,.2002 edition 4.2 and appendix A); - Test methods for moisture, chloride and non-condensable gases are referred to as general method standards (see 4.4, 4.7 and 4. 8,.2002) 4.4, 4.7 and 4.6); - Modification of type inspection and factory inspection (see 5.1,.2002, 5.1 and 5.2); --- Added security chapter (see Chapter 7). This standard is proposed by the China Petroleum and Chemical Industry Association. This standard is nationalized by the National Chemical Standardization Technical Committee Organic Chemical Subcommittee (SAC/TC63/SC9). The main drafting of this standard. Zhejiang Quhua Fluorine Chemical Co., Ltd., Sinochem Modern Chemical Chemical (Xi'an) Co., Ltd., China Petrochemical Beijing Chemical Industry Research Institute. The standard to participate in the drafting unit. Shandong Dongyue Chemical Co., Ltd., Linhai City Limin Chemical Co., Ltd., Changshu three love rich in the new chemical Materials Co., Ltd., Zhejiang Yonghe Refrigerating Co., Ltd., Jiangsu Meilan Chemical Co., Ltd. The main drafters of this standard. Chen Caiqin, Liu Hongxiu, Lei Jun, Yang Bo, Zhao Zhixia, Huang Yu, Wang Jianzhi. This standard was first published in.2002, this time for the first revision. Industrial 1,1,1,2-tetrafluoroethane (HFC-134a)

1 Scope

This standard specifies the requirements for industrial 1,1,1,2-tetrafluoroethane (HFC-134a, also known as R134a), test methods, inspection regulations Then, marking, packaging, shipping and storage as well as safety. This standard applies to industrial 1,1,1,2-tetrafluoroethane. Molecular formula. C2H2F4 Structure. FC Relative molecular mass. 102.04 (according to.2011 international relative atomic mass)

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB 190 Dangerous Goods Packaging Mark GB/T 191 packaging and storage icon Preparation of standard titration solution for GB/T 601 chemical reagents Preparation of preparations and preparations for use in the test methods for chemical reagents GB/T 603 General rules for sampling of gas chemical products GB/T 6681-2003 GB/T 7373-2006 Industrial use of difluorochloromethane (HCFC-22) Determination of trace moisture in fluorinated formans for industrial use GB/T 7376-2008 Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170 GB/T 9722 General principles of chemical reagents for gas chromatography GB 14193 liquefied gas cylinders filling requirements Fluorinated alkanes - Non - condensable gases (NCG) - Determination of gas chromatographic method GB/T GB/T 31401-2015 Determination of fluorinated alkanes chloride (Cl-) Turbidity method TSGR4002 Mobile Pressure Vessel Charging Permission Rules

3 request

3.1 traits Colorless transparent liquid, no visible solid particles. 3.2 technical indicators Industrial 1,1,1,2-tetrafluoroethane should meet the technical specifications shown in Table 1. ...