GB/T 8139-2009 English PDF

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GB/T 8139-2009: Dewaxed shellac, Decolorized shellac, Decolorized and dewaxed shellac
Status: Valid

GB/T 8139: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8139-2009	189	Add to Cart	3 days	Dewaxed shellac, Decolorized shellac, Decolorized and dewaxed shellac	Valid
GB/T 8139-1987	199	Add to Cart	2 days	Dewaxed shellac, Decolorized shellac and decolorized dewaxed shellac	Obsolete

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Basic data

Standard ID: GB/T 8139-2009 (GB/T8139-2009)
Description (Translated English): Dewaxed shellac, Decolorized shellac, Decolorized and dewaxed shellac
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B72
Classification of International Standard: 87.040
Word Count Estimation: 8,885
Date of Issue: 2009-05-12
Date of Implementation: 2009-11-01
Older Standard (superseded by this standard): GB/T 8139-1987
Quoted Standard: GB/T 8142-2008; GB/T 8143-2008
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.7 (Total No.147)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the dewaxed shellac, bleaching bleaching dewaxed shellac and shellac technical requirements, sampling, test methods, inspection rules and signs, packaging, storage and transportation. This standard applies to solvent dewaxing, with active carbon processing shellac.

GB/T 8139-2009: Dewaxed shellac, Decolorized shellac, Decolorized and dewaxed shellac

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Dewaxed shellac, Decolorized shellac, Decolorized and dewaxed shellac ICS 87.040 B72 National Standards of People's Republic of China Replacing GB/T 8139-1987 Dewaxing shellac, bleaching and shellac Decolorizing dewaxing shellac Posted 2009-05-12 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 8139-1987 "dewaxed shellac, decolorized shellac and dewaxed shellac decolorized." This standard compared with GB/T 8139-1987, the main changes are as follows. --- Increasing the normative references; --- Modify the content of terms and definitions; --- Remove the technical requirements must be measured, election test, note the requirements; --- Modify the value of the technical requirements of hot ethanol insolubles and waxy indicators; --- Amend the provisions of the rules of inspection; --- Increasing the storage and transport of temperature requirements. This standard was proposed by the State Forestry Administration. The standard by the China Academy of Forestry Forest Research Institute of Chemical Industry. This standard is drafted by. Chinese Academy of Forestry Forest Research Institute of Chemical Industry. Participated in the drafting of this standard. Kunming Su Biological Technology Co., Ltd., Yunnan Yunxian busy Huai forest of plants, Kunming Forest Chemical Co., Ltd. the company. The main drafters of this standard. Wang Yongmei, Chen Jia-hong, WU Dong-mei, Wu Song. This standard replaces the standards previously issued as follows. --- GB/T 8139-1987. Dewaxing shellac, bleaching and shellac Decolorizing dewaxing shellac

1 Scope

This standard specifies the technical requirements dewaxing shellac, decolorized shellac and dewaxed shellac decolorized of sampling, test methods, inspection rules And signs, packaging, storage and transportation. This standard applies to solvent dewaxing, decolorized with charcoal processing shellac.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 8142-2008 Sampling method lac products GB/T 8143-2008 lac product testing method

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 From purple or collagen gel particles shellac wax off with a solvent refined processing of shellac. 3.2 From purple or collagen gel particles shellac decolorized with charcoal processing light purple waxy film. 3.3 From purple collagen gel particles or dewaxed shellac decolorized with charcoal and then processed substantially wax-free light-colored shellac. 4. Technical Requirements Shellac levels should comply with the technical specifications given in Table 1.

5 Sampling

According to GB/T 8142-2008 requirements for sampling and preparation of laboratory samples. Table 1 Technical Specifications Index Name Dewaxed shellac decolorized shellac dewaxed shellac decolorized One two one two one two Color index ≤ 18 - 2 5 2 5 Hot ethanol insolubles /% ≤ 0.2 0.4 0.5 0.5 0.2 0.4 ......

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