GB 31604.5-2016_English: PDF (GB31604.5-2016)
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| GB 31604.5-2016 | English | 70 |
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Method for analysis of hygienic standard of polypropylene resin for food packing
| Valid |
GB 31604.5-2016
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| Standard ID | GB 31604.5-2016 (GB31604.5-2016) | | Description (Translated English) | Method for analysis of hygienic standard of polypropylene resin for food packing | | Sector / Industry | National Standard | | Classification of Chinese Standard | X09 | | Word Count Estimation | 5,592 | | Date of Issue | 2016-08-31 | | Date of Implementation | 2017-03-01 | | Older Standard (superseded by this standard) | GB/T 5009.99-2003; GB/T 5009.71-2003; GB/T 5009.59-2003; GB/T 5009.58-2003; GB 13114-1991 | | Regulation (derived from) | Announcement of the State Administration of Public Health and Family Planning 2016 No.11 |
GB 31604.5-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
National Food Safety Standard –
Food Contact Materials and Products –
Determination of Extract in Resin
ISSUED ON. AUGUST 31, 2016
IMPLEMENTED ON. MARCH 1, 2017
Issued by. National Health and Family Planning Commission of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Principle ... 4
3 Reagents and Materials (Extracting Solution) ... 4
4 Apparatus ... 5
5 Analytical Procedures ... 5
6 Expression of Analytical Results ... 6
7 Precision ... 7
Foreword
This Standard replaced the determination of normal hexane extract in GB/T 5009.58-
2003 Method for Analysis of Hygienic Standard of Polyethylene Resin for Food
Packaging; and GB/T 5009.59-2003 Method for Analysis of Hygienic Standard of
Polystyrene Resin for Food Packaging, GB/T 5009.71-2003 Method for Analysis of
Hygienic Standard of Polypropyrene Resin for Food Packing; as well as the
determination of extract in GB/T 5009.99-2003 Method for Analysis of Hygienic
Standard of Polycarbonate Resin Used as Food Containers and Packagin, GB 13114-
1991 Hygienic Standardfor Polyethylene Terephthalate Resin Used as Food
Containers and Packaging Materials.
Compared with GB/T5009.58-2003, GB/T 5009.59-2003, GB/T 5009.71-2003, GB/T
5009.99-2003, GB 13114-1991, this Standard has the major changes as follows.
--- Modify the standard name into “National Food Safety Standard – Food Contact
Materials and Products – Determination of Extract in Resin”;
---Modify the standard scope;
--- Modify the determination method.
National Food Safety Standard –
Food Contact Materials and Products –
Determination of Extract in Resin
1 Scope
This Standard specifies the determination of extract in resin of food contact materials
and products.
This Standard is applicable to the determination of extract in polyethylene, polystyrene,
polypropyrene, polycarbonate resin, polyethylene terephthalate resin of food contact
materials and products.
2 Principle
The specimen is extracted through extracting solution; vaporize the extracting solution
till it is dry; after the residues are dried, use weight method to determine the content of
extract in the specimen.
3 Reagents and Materials (Extracting Solution)
Unless otherwise is specified, the reagents used in this Method shall be analytically
pure; while water used shall be Class-II water specified in GB/T 6682.
3.1 Reagents
3.1.1 Acetic acid (CH3COOH).
3.1.2 Anhydrous ethanol (C2H5OH).
3.1.3 95% ethanol.
3.1.4 Normal hexane (C6H14).
3.1.5 Normal heptane (C7H16).
3.2 Reagent preparation (extracting solution)
3.2.1 4% acetic acid solution (volume fraction). weigh 40mL of acetic acid, add
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