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GB/T 21849-2008: Chemical products for industrial use -- Determination of inflammation of gases formed after hydrolysis of solids and liquids
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Chemical products for industrial use -- Determination of inflammation of gases formed after hydrolysis of solids and liquids
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GB/T 21849-2008
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Basic data | Standard ID | GB/T 21849-2008 (GB/T21849-2008) | | Description (Translated English) | Chemical products for industrial use -- Determination of inflammation of gases formed after hydrolysis of solids and liquids | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 11,135 | | Date of Issue | 2008-05-12 | | Date of Implementation | 2008-09-01 | | Quoted Standard | GB/T 21847 | | Adopted Standard | NF T20-040-1985, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards 2008 No. 8 (No. 121 overall) | | 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 applies to determine the solid or liquid chemical hydrolysis to produce gas flammability. This standard does not apply to those in contact with air automatically after burning substances. | GB/T 21849-2008: Chemical products for industrial use -- Determination of inflammation of gases formed after hydrolysis of solids and liquids
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Chemical products for industrial use. Determination of inflammation of gases formed after hydrolysis of solids and liquids
ICS 13.300
A80
National Standards of People's Republic of China
Hydrolysis of solid and liquid industrial chemicals
Combustible gas produced is determined
Posted 2008-05-12
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to using NFT20-040. 1985 "gas flammability determination of solids and liquids produced by the hydrolysis of industrial chemicals"
(French board).
Appendix A of this standard is an informative annex.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard is drafted by. Tianjin CIQ.
Participated in the drafting of this standard. Jiangsu Entry-Exit Inspection and Quarantine Bureau, Ningbo CIQ.
The main drafters of this standard. Lining Tao, in Yanjun, Xiongzhong Jiang, Chen Lu, Chen Dan Chao, Li Jing.
This standard is the first release.
NFT Introduction
This Standard on August 5, 1985 approved by the Director-General of the French Association for Standardization, on September 5, 1985 entered into force.
Before publication of this standard, which no internationally relevant international standards, but it is the party with the 84/449/CEE Directive Committee A12
Anastomosis.
This standard is for those who engage in physical and chemical properties of chemicals (industrial use) analysis, in this case, you must write a
Parts of the technical dossier, in order to provide a new set of content, or in accordance with the provisions of No. 82-950 preparation, taking into account the 79/831/CEE Article
Section on the sixth revision of 67/548/CEE on the terms of the relevant provisions of hazardous substances.
This standard is determined by chemical hydrolysis under different conditions and to observe whether there is gas produced flammable gas.
International Technology Glossary. \u200b\u200bchemical products, industrial products, hazardous substances, flammable substances in water, flammable gases, uncertainty, flammable solids,
Liquid hydrolysis.
Hydrolysis of solid and liquid industrial chemicals
Combustible gas produced is determined
Will release dangerous gases or flammable or toxic gases when suspected, can use this method when the standard sample with distilled water reaction.
1 Scope
This standard applies to the determination of the combustible gas produced solid or liquid chemicals after hydrolysis.
This standard does not apply to those automatically after contact with air burning substance.
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 21847 chemical products for industrial use flammable gas determined
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Combustible gas generated after hydrolysis test sample.
3.2
Pyrophoric gases or flammable dangerous gases, the minimum amount of gas generated 1L/(kg · h).
Principle 4
This standard applies to the sample after hydrolysis of combustible gas is determined, such determination to be completed in a number of steps, if any
Step appearing fire, the remaining steps are not performed.
Step 1. The sample was placed in 20 ℃ distilled water were tested to observe whether the generated gas open fire.
Step 2. The sample is placed on a float on the surface of the filter paper with distilled water 20 ℃, observe whether the generated gas open fire.
Step 3. The sample was piled into a pile, and add a few drops of distilled water to observe whether the generated gas open fire.
Step 4. The sample was mixed with distilled water, the gas generation amount per 1h Measurement at 7h.
5 Reagents
Distilled water
6 Test Instruments
During the test equipment required is as follows.
6.1 conical flask. Size 29/32,500mL (NFB35-008).
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