GB 21550-2008 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB 21550-2008: Restriction of hazardous materials in polyvinyl chloride artificial leather Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 21550-2008: Restriction of hazardous materials in polyvinyl chloride artificial leather---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/GB21550-2008GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.080.40;83.140 Y 47 Restriction of hazardous materials in polyvinyl chloride artificial leather Issued on. MARCH 24, 2008 Implemented on. MARCH 1, 2009 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Requirements... 4 4 Sampling rules... 5 5 Test methods... 5 6 Inspection rules... 9ForewordClause 3 of this Standard is mandatory; the rest are recommendatory. Polyvinyl chloride artificial leather is mainly used in automotive interiors, architectural decoration, soft furniture, clothing, medical equipment, home appliances decoration and other areas closely related to human life. The implementation of this Standard is conducive to limit the content of harmful substances, improve the living environment and protect human health. After 6 months since the date of implementation of this Standard, products which do not comply with this Standard shall not be sold on the market. This Standard was proposed by China Light Industry Association. This Standard shall be under the jurisdiction of National Technical Committee on Plastic Products of Standardization Administration of China. Main drafting organization of this Standard. Shanghai Yan Chang Plastic Co., Ltd. The drafting organizations of this Standard. National Plastic Products Quality Supervision and Inspection Center (Beijing), Foshan Plastic Group Co., Ltd. Ssangyong Branch. Main drafters of this Standard. Bian Zhengyin, Lu Xiaoli, Li Jietao, Yang Baohong, Shen Shihua, Zhang Huaihai. Restriction of hazardous materials in polyvinyl chloride artificial leather1 ScopeThis Standard specifies the restriction, test methods, sampling and inspection rules for vinyl chloride monomer, soluble lead, soluble cadmium and other volatiles in polyvinyl chloride artificial leather. This Standard applies to polyvinyl chloride artificial leather (hereinafter referred to as artificial leather) of which takes polyvinyl chloride resin as the main raw material and is added with the appropriate additives, with or without substrate, foam or non-foaming, processed by coating, calendering, composite production process.2 Normative referencesThe following standards contain the provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated references, subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, the parties who enter into agreement based on this Standard are encouraged to investigate whether the latest versions of these documents are applicable. For undated reference documents, the latest versions apply to this Standard. GB/T 2918-1998 Plastics -- Standard atmospheres for conditioning and testing (idt ISO 291.1997)3 Requirements3.1 Restriction of vinyl chloride monomer The vinyl chloride monomer content in the polyvinyl chloride layer of artificial leather shall not exceed 5 mg/kg. 3.2 Restriction of soluble heavy metals The content of soluble lead in artificial leather shall not exceed 90 mg/kg.4 Sampling rules4.1 In accordance with the provisions of the relevant product standards. It shall be carried out according to 4.2 ~ 4.4 of this Standard in the absence of sampling rules of relevant product standards. 4.2 One roll of samples shall be taken from each batch of products at random. 4.4 After extraction, the samples shall be sealed in a non-polyvinyl chloride plastic bag and placed in a cool place. No special treatment shall be carried out.5 Test methods5.1 Effectiveness Since the date of production, the test shall be carried out after 7 d storage. 5.2 Sampling The test specimen shall be cut at least 50 mm from the edge of the sample. 5.4 Determination of soluble heavy metal content 5.4.1 Apparatus 5.4.2 Reagents and solutions 5.4.2.1 Hydrochloric acid (analytically pure) 5.4.2.6 Deionized water 5.4.3 Specimen preparation Make the artificial leather in a flat state. Evenly extract 2 10 mm × 100 mm specimens along with the direction of width. After respectively weighing, cut it into 10 10 mm × 10 mm specimens. Respectively add 25 mL of hydrochloric acid solution (5.4.2.4). After soaking for 24 h, use deionized water to set the volume to 50 mL. Filter and test the soaking solution. Prepare the blank solution simultaneously. 5.4.4 Apparatus conditions 5.4.5 Drawing of lead standard curve 5.4.5.1 0.1 mg/mL lead standard stock solution Weigh 0.1600 g of lead nitrate (5.4.2.2). Use hydrochloric acid solution (5.4.2.5) to dissolve. Transfer it to 1 L volumetric flask and dilute to scale. Shake it well. 0.1 mg of lead is contained in 1 mL of this solution. 5.4.6 Drawing of cadmium standard curve 5.4.6.1 0.1 mg/mL cadmium standard stock solution Weigh 0.2371 g of cadmium acetate (5.4.2.3). Use hydrochloric acid solution (5.4.2.5) to dissolve it into 1 L volumetric flask. Dilute it to scale. Shake it well. 0.1 mg of cadmium shall be contained in 1 mL of this solution. 5.4.6.2 Cadmium standard solution Respectively pipette 0 mL, 0.5 mL, 1.0 mL, 2.0 mL, 5.0 mL of cadmium standard stock solution (5.4.6.1) into 100 mL volumetric flask. Use hydrochloric acid solution (5.4.2.5) to dilute to scale. Prepare standard solutions of which the cadmium contents are 0 mg/L, 0.5 mg/L, 1.0 mg/L, 2.0 mg/L and 5.0 mg/L. 5.5 Determination of the contents of other volatiles 5.5.1 Instruments and equipment 5.5.2 Specimen preparation and determination method 5.5.3 Calculation Calculate the contents of volatiles according to equation (2). 5.5.4 Results representation Take the arithmetic mean value of the measurement results of the three specimens to represent, 2 significant digits remained.6 Inspection rules6.1 The inspections on the restriction of hazardous materials specified in this Standard are type inspection items. 6.2 Under normal production conditions, the type inspection shall be carried out at least once a year. 6.3 The type inspection should be conducted in one the following cases. 6.4 When all items of the test results meet the requirements of this Standard, this product shall be determined as qualified. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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