|
||||||||||||||||||||||||||||||
GB/T 43179-2023 English PDFUS$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 43179-2023: Determination of material insoluble in N, N-dimethylformamide for pesticides Status: Valid
Basic data
GB/T 43179-2023: Determination of material insoluble in N, N-dimethylformamide for pesticides---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.ICS 65.100 CCSG23 National Standards of People's Republic of China Method for determination of insoluble matter of pesticide N,N-dimethylformamide Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Pesticide Standardization Technical Committee (SAC/TC133). This document was drafted by. Shandong Tokyo Bonong Chemical Technology Co., Ltd., Shangyu Yingtai Fine Chemical Co., Ltd., Zhejiang Shijia Technology Co., Ltd. Co., Ltd., Zhejiang Nanjiao Chemical Co., Ltd., Shenzhen Nuopoxin Agrichemical Co., Ltd., Jiangsu Changlong Agricultural Chemical Co., Ltd., Shandong Binnong Technology Co., Ltd., Zhejiang Xin'an Chemical Group Co., Ltd., Hunan Haohua Chemical Co., Ltd., Shenyang Shenyang Chemical Institute Testing Technology Co., Ltd. Ltd. The main drafters of this document. Yin Xiu'e, Cao Tongbo, Sun Jiushe, Xu Lijuan, Yin Kai, Xi Wang, Dai Lanfang, Rui Yanchun, Dong Jie, Ye Shan, Cao Saiqiong. Method for determination of insoluble matter of pesticide N,N-dimethylformamide Warning. Personnel using this document should have practical experience in laboratory work. This document does not address all security issues. user Responsibility for taking appropriate safety and health measures.1 ScopeThis document describes the method for the determination of insoluble matter of the pesticide N,N-dimethylformamide, including the heating reflux method and the normal temperature method. This document is applicable to the determination of insoluble matter of the pesticide N,N-dimethylformamide. The heating reflux method is suitable for use in N,N-dimethylformamide Samples that are not easily soluble at room temperature, but can be dissolved after heating; the room temperature method is suitable for shaking in N,N-dimethylformamide at room temperature A soluble sample.2 Normative reference documentsThis document has no normative references.3 Terms and definitionsThere are no terms or definitions to be defined in this document.4 General provisionsThe reagents used in this document refer to analytically pure reagents unless other requirements are noted. 5 Determination of insoluble matter in N,N-dimethylformamide---heating reflux method 5.1 Principle Dissolve the sample in boiling N,N-dimethylformamide, filter the insoluble matter with a glass sand core crucible funnel, dry and weigh, and obtain The mass of insoluble matter was calculated to obtain the mass fraction of N,N-dimethylformamide insoluble matter. 5.2 Reagents N,N-dimethylformamide. analytically pure. 5.3 Instruments and consumables 5.3.1 Etalon stopper ground-mouth conical flask. 250mL. 5.3.2 Reflux condenser. spherical. 5.3.3 Glass sand core crucible funnel. G3 type. 5.3.4 Erlenmeyer filter flask. 500mL. 5.3.5 Oven. 160℃±2℃. 5.3.6 Glass desiccator. built-in desiccant. ...... |