GB/T 19421-2008Test methods of crystalline layered sodium disilicate (English PDF)
层状结晶二硅酸钠试验方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 28, 2008
Implementation date
December 1, 2008
Scope
GB/T 19421-2008 is the English-translated version of 层状结晶二硅酸钠试验方法.
GB/T 19421-2008 is the Chinese national standard covering test methods of crystalline layered sodium disilicate. It was issued on 28 May 2008 and has been in force since 1 December 2008, replacing GB/T 19421.2-2003.
The document is under the responsibility of the China National Light Industry Council. This page is published from the official record of the 2008 edition. The figures, limits and tables the standard contains are those of the document itself, delivered in full with the English translation.
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Document preview — GB/T 19421-2008
National Standard of the People's Republic of China
- ICS
- 71.100.40
- Classification
- G 72
- Replacing
- GB/T 19421.2-2003
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- [Preview only]
- 1 Scope
- 2 Normative References
- 3 Requirements
- 3.1 General Requirements
- 3.2 Allowable Working Pressure and Allowable Working Temperature of Rotary Machines
- 3.3 Inlets, Outlets and Other Connections
- 3.4 Materials
- 4 Test Methods
- 4.1 Warning
- 4.3 Appearance
- 4.4 Determination of ethylene oxide content
- 5 Inspection Rules
- 5.2 Control of pollutant source
- 5.3 Waste gas treatment
- 6 Marking, Packaging, Transportation and Storage
- 6.2 Control of pollution source
- 6.3 Storage and transportation of wastewater and reused water
- 6.4 Treatment of wastewater and reused water
- 6.5 Design of sewage and reused water treatment plant (station)
- 6.6 Water pollution prevention and control under accident conditions
- 6.7 Prevention and control of groundwater and soil pollution
- 7 Safety
- 7.3 Storage and transportation of solid waste
- 7.4 Solid waste treatment and disposal
- 8 Prevention and control of noise
- 8.2 Noise control of machinery and equipment
- 8.3 Noise control of factory-area
- 8.4 Noise control of factory-boundary
- 8.5 Noise monitoring
- 9 Environmental monitoring
1 Foreword
GB/T 19421-2008 was issued by State Administration for Market Regulation; Standardization Administration of the PRC on 28 May 2008 and has been in force since 1 December 2008.
It is one of 13 parts of the GB/T 19421 series.
The GB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
2 Scope Preview
GB/T 19421-2008 falls under ICS 71.100.40, in the field of chemical technology.
This catalogue holds 2,352 other GB/T standards in that field.
In this catalogue, GB/T standards carry edition years from 1963 to 2026.
3 About this standard
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
English translation: about 17 pages
4 Related standards
Other parts of this standard:
GB/T 19421.1-2003 — Test methods of crystalline layered sodium disilicate
GB/T 19421.2-2003 — Test methods of crystalline layered sodium disilicate - Measurement of whiteness
GB/T 19421.3-2003 — Test methods of crystalline layered sodium disilicate - Method for determination of pH
GB/T 19421.4-2003 — Test methods of crystalline layered sodium disilicate - EDTA volumetric methods for determination of calcium ion exchange capacity
GB/T 19421.5-2003 — Test methods of crystalline layered sodium disilicate - EDTA volumetric methods for determination of magnesium exchange capacity content
GB/T 19421.6-2003 — Test methods of crystalline layered sodium disilicate - Gravimetric methods for determination of the loss on ignition
GB/T 19421.7-2003 — Test methods of crystalline layered sodium disilicate - Gravimetric methods for determination of hygroscopic moisture
GB/T 19421.8-2003 — Test methods of crystalline layered sodium disilicate - Phenanthroline photometric methods for determination of iron oxide content
GB/T 19421.9-2003 — Test methods of crystalline layered sodium disilicate - Potassium fluosilicate volumetric methods for determination of sodium oxide content
GB/T 19421.10-2003 — Test methods of crystalline layered sodium disilicate - Potassium fluosilicate volumetric methods for determination of silica dioxide content
GB/T 19421.11-2003 — Test methods of crystalline layered sodium disilicate - Atomic absorption spectrophotometric methods for determination of calcium oxide content
GB/T 19421.12-2003 — Test methods of crystalline layered sodium disilicate - Atomic absorption spectrophotometric methods for determination of magnesium oxide content
Other editions:
GB/T 19421-2026 (later edition)
Standards on related subjects:
GB/T 15357-2014 — Surface active agents and detergents -- Determination of viscosity and flow properties of liquid products using a rotational viscometer
GB/T 17831-1999 — Non-ionic surface active agents. Determination of sulfated ash. Gravimetric method
GB/T 11986-1989 — Surface active agents. Powders and granules. Mesurement of the angle of repose
GB/T 11985-2026 — Surface active agents - Determination of interfacial tension - Drop volume method
GB/T 11275-2026 — Surface active agents - Determination of water content
5 Classification and status
International classification (ICS): 71.100.40
Chinese Standard Classification (CCS): G 72
Prefix GB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Similar standards
Editions of GB/T 19421
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 19421-2008 | Test methods of crystalline layered sodium disilicate | current edition | Current |
| GB/T 19421.2-2003 | Test methods of crystalline layered sodium disilicate | previous edition | Superseded |
This page sells the current edition, GB/T 19421-2008. Earlier editions are listed for reference only.
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Related Standards
GB/T 19421.1-2003 — Test methods of crystalline layered sodium disilicate
GB/T 19421.2-2003 — Test methods of crystalline layered sodium disilicate - Measurement of whiteness
GB/T 19421.3-2003 — Test methods of crystalline layered sodium disilicate - Method for determination of pH
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GB/T 19421-2008
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