GB/T 21850-2008 English PDF

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GB/T 21850-2008: Chemical products for industry use -- Determination of spontaneous combustion of solids and liquids
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21850-2008	94	Add to Cart	3 days	Chemical products for industry use -- Determination of spontaneous combustion of solids and liquids	Valid

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Basic data

Standard ID: GB/T 21850-2008 (GB/T21850-2008)
Description (Translated English): Chemical products for industry use -- Determination of spontaneous combustion of solids and liquids
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A80
Classification of International Standard: 13.300
Word Count Estimation: 5,567
Date of Issue: 2008-05-12
Date of Implementation: 2008-09-01
Adopted Standard: NF T20-039-1985, 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 specifies the chemical products spontaneous combustion test methods. This standard applies to solid, liquid and powder chemical products in short contact with air at room temperature after spontaneous combustion OK.

GB/T 21850-2008: Chemical products for industry use -- Determination of spontaneous combustion of solids and liquids

---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.
Chemical products for industry use. Determination of spontaneous combustion of solids and liquids ICS 13.300 A80 National Standards of People's Republic of China Solid and liquid chemical products to determine the spontaneous combustion 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 the NFT20-039. 1985 "spontaneous combustion of solid and liquid chemical products of determination" (French version), the standard text The present format press GB/T 1.1-2000 made editorial changes. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard is drafted by. Jiangsu CIQ. Participated in the drafting of this standard. Jiangxi CIQ. The main drafters of this standard. Feizhou week, accounting for spring Rui, Li Jianjun, Kouhai Juan, Hongxing Jiang, Chen Wei, Liu Junfeng. This standard is the first release. Solid and liquid chemical products to determine the spontaneous combustion

1 Scope

This standard specifies the test methods for chemical products of spontaneous combustion. This standard applies to after solid, liquid and powder chemical products in contact with air at room temperature to determine the short-term nature of spontaneous combustion.

2 Terms and definitions

The following terms and definitions apply to this standard. 2.1 Under normal conditions, no trigger to produce a flame. Principle 3 At room temperature, the sample is in contact with air within 5min, observe whether there is a flame produced.

4 Reagents and materials

Diatomaceous earth or other inert material. 5. Apparatus Diameter round porcelain dish about 100mm of.

6 steps

6.1 Liquid samples. at room temperature, Celite round dish filled about 5mm thick, was poured into the sample 5mL round dish, viewed in 5min In the presence or absence of the flame produced (repeat six times). 6.2 powder solid samples. A sample 1mL or 2mL fall from 1m height to a nonflammable plane observed in the sample during the fall Or whether the flames after landing within 5min generation (repeat six times).

7 represents the results

The product is dependent on the result of spontaneous combustion by at least six experiments made to determine.

8 Test Report

The test report shall include the following. a) confirmation samples (physical form, humidity, impurities, etc.); b) According to the test mode; c) test results; d) the details of the special circumstances of the occurrence of the test report; e) no predictability in the current standard for all operations or to report freely all operations. ......

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