GB 21550-2008 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 21550-2008 | English | 70 |
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Restriction of hazardous materials in polyvinyl chloride artificial leather
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GB 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/GB21550-2008
GB
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 Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Requirements... 4
4 Sampling rules... 5
5 Test methods... 5
6 Inspection rules... 9
Foreword
Clause 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 leather
1 Scope
This 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 references
The 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 Requirements
3.1 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 rules
4.1 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 methods
5.1 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 rules
6.1 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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