jQuery Mobile Framework
Search Home >> Standards Wordwide >> Chinese Standards(GB) >> GB/T 4118-2008 Trichloromethane for industrial use

GB/T 4118-2008 Trichloromethane for industrial use

Standard Number:  GB/T 4118-2008
Title:  Trichloromethane for industrial use
Language:  Simplified Chinese
Publication Date:  2008/4/1
Execute Date:  2008/9/1
Status:  Current
Standard Type:  Product
International Classification for Standards (ICS)CHEMICAL TECHNOLOGY>>Organic chemicals>>Aromatic hydrocarbons
Publisher:  Chinese Standards(GB)
Price:7.20  
Number of Pages:  

Preface: Instead of this standard GB/T 4118-1992 Trichloromethane for industrial use "industrial chloroform". Compared this standard with GB/T 4118-1992 Trichloromethane for industrial use main changes are as follows: - scope by this standard applies to to methane chlorination process, acetaldehyde, chloral alkaline hydrolysis, light chlorination process production of chloroform instead of the standard is applicable to methanol hydrogen chloride Production method of chloroform (GB/T 4118-1992 Trichloromethane for industrial use, chapter 1, chapter 1 of this edition); - the quality of the technical requirements of chloroform fraction index classy article by 99.5% instead of 99.90% or higher, or grade a by 99.0% instead of 99.50% or higher, or more qualified products by 98.0% or more For 99.20% or more; Classy article moisture index by 0.03% to 0.010% or less, or less grade a by 0.03% instead of 0.020% or less, or less qualified products by 0.05% instead of 0.030% or less or less; Classy article acidity index by 0.001% to 0.0004% or less, or less grade a by 0.0 or less Nonconforming product 01% instead of 0.0006% or less, by 0.003% to 0.0010% or less or less; Carbon tetrachloride classy article content index by 0.05% to 0.04% or less, or less nonconforming product grade a by 0.2% instead of 0.08% or less, or less at 0.20% or less (GB/T 4118-1992 Trichloromethane for industrial use 3.2, this version 3.2); - test method, increased the appearance test method; Determination of the content of chloroform reference GB/T21541-2008 "industrial use of chlorinated methane gas chromatography for determination of the purity of such products; The determination of moisture content, acidity by reference standard GB/T4120 modified to GB/T 4117-2008 (GB/T 4118-1992 Trichloromethane for industrial use, chapter 4, this version of chapter 4). - inspection rules and packing, marking, storage and transportation is divided into two chapters written (GB/T 4118-1992 Trichloromethane for industrial use in chapter 5, this version of chapter 5 and chapter 6); - in packing, marking, storage and transportation Added a drug marks (see 6.1); - increases the safety chapter (see chapter 7). Please note that some content of this standard may involve patents. The release of this international standard organization not bear the responsibility of the recognition of these patents. This standard put forward by China petroleum and chemical industry association. This standard by the national standardization technical committee chemistry Organic branch (SAC/TC63 / SC2) under centralized. This standard drafting unit: HaoHua southwest chemical co., LTD., zhejiang qu fluorine chemical co., LTD. In this standard drafting unit: shandong dongyue fluorine and silicone material co., LTD., shandong Jin Ling chemical co., LTD. Main drafter of this standard: jin tao, cao, Shen Zhi Rong, Zhang Di. This standard was first published in 1983, in 1992 the first revision.  
Description:This standard specifies the requirements of industrial use chloroform, test methods, inspection rule, mark, packing, transportation, storage and safety. This standard applies to methanol chloroform chlorination process of hydrogen production, inspection and marketing. The products are mainly used in the manufacture of refrigerants, also used as a solvent, extraction solvent, medicine and dye intermediates, etc. Instead of this standard gb/t4118-1992 "industrial chloroform".
this standard and gb/t4118-1992 compared with the main changes are as follows:
- ranging from "the standard is applicable to methane chlorination process, acetaldehyde, chloral alkaline hydrolysis, light chlorination process production of chloroform" instead "This standard applies to methanol chloroform chlorination process of hydrogen" (gb/t4118 chapter 1-1992, this version of the
chapter 1);
- the quality of the technical requirements of chloroform fraction index classy article by 99.5% instead of 99.90% or higher, or higher grade a by 99.0% instead of 99.50% or higher, or more qualified products by 98.0% instead of 99.20% or higher or more; Classy article by or less moisture indicators 0.03% to 0.010% or less, grade a by 0.03% instead of 0.020% or less, or less qualified products by 0.05% instead of 0.030% or less or less; Classy article acidity index by 0.001% to 0.0004% or less, or less grade a by 0.001% instead of 0.0006% or less, or less qualified products by 0.003% instead of 0.0010% or less or less; Carbon tetrachloride content index classy article from 0.05% or less 0.04% or less, grade a by 0.2% instead of 0.08% or less, or less qualified for 0.20% or less (gb/t4118-1992 3.2, this version of the 3.2);
- test method, increased the appearance test method; Determination of the content of chloroform reference gb/t21541-2008 "industrial use of chlorinated methane
gas chromatography for determination of the purity of such products; The determination of moisture content, acidity Reference standard gb/t4120 modified to gb/t4117-2008 (gb/t4118-1992, chapter 4, this version of chapter 4).
--, inspection rules and packing, marking, storage and transportation is divided into two chapters written (gb/t4118-1992 in chapter 5, this version of chapter 5 and chapter 6);
--, packing, marking, storage and transportation of increase the symbol "drugs" (see 6 . 1);
- increases the "safety" chapter (see chapter 7).  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  746KB
Tile in English:  Trichloromethane for industrial use

Full Text Information

Related

Top 10

New 10

PC Version