GB/T 8138-2009Shellac (English PDF)
紫胶片
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 12, 2009
Implementation date
November 1, 2009
Scope
GB/T 8138-2009 is the English-translated version of 紫胶片.
GB/T 8138-2009 is the Chinese standard "Shellac". Its scope clause reads: This standard specifies the technical requirements of shellac, sampling, test methods, inspection rules and signs, packaging, storage and transportation.
This standard applies to particles of collagen gel shellac and purple with hot filtration, solvent processing shellac. Its clauses include terms and definitions.
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Document preview — GB/T 8138-2009
National Standard of the People's Republic of China
- ICS
- 87.040
- Classification
- B 72
- Replacing
- GB/T 8138-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This standard specifies the technical requirements of shellac, sampling, test methods, inspection rules and signs, packaging, storage and transportation.
This standard applies to particles of collagen gel shellac and purple with hot filtration, solvent 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 hot filtration or working without a solvent dewaxed shellac decolorized.
4. Technical Requirements
Shellac levels should comply with the technical specifications given in Table 1.
Table 1 shellac technical indicators
Index Name grade
Laid a special two Grade B Grade C
Moisture /% <= 2.0 2.0 2.0 2.0 2.0
Hot ethanol insolubles /% <= 0.50 0.75 1.00 1.20 1.50
Color index/number <= 10 14 18 22 35
Thermosetting time (170 °C ± 0.5 °C)/min >= 3.0 3.0 3.0 3.0 3.0
Softening point/°C >= 72 72 72 72 72
Acid value/(mg/g) <= 73 73 73 73 73
Rosin None None None None None
Water soluble matter /% <= 0.5 0.5 0.5 0.5 0.5
Ash /% <= 0.3 0.3 0.4 0.5 0.8
Waxy /% <= 5.5 5.5 5.5 5.5 5.5
Iodine value/(g/100g) <= 20 20 20 20 20
Orpiment None None None None None […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 8138
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 8138-2009 | Shellac | current edition | Current |
| GB/T 8138-1987 | Shellac | previous edition | Superseded |
This page sells the current edition, GB/T 8138-2009. Earlier editions are listed for reference only.
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