GB 23557-2009Methomyl emulsifiable concentrates (English PDF)

Foreword

The standard Chapter 3, Chapter 5 are mandatory, the rest are recommended. Since the implementation of this standard, the original chemical industry standard HG2612-1994 "20% Methomyl EC" void. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee on Pesticides (SAC/TC133) centralized. This standard is drafted by: Shenyang Chemical Research Institute. Participated in the drafting of this standard. Haili Guixi Chemical Pesticide Co., Pesticide Research Institute in Shandong Province, Jiangsu dragon Chemical Co., Ltd., Jiangsu Su Yancheng Limin Chemical Co., Ltd. The main drafters of this standard. Zhao Xin, Li Xiujie, Running an, Lidong Qin, of cloud point, Wei Hongsheng. Methomyl EC Other name, structural formula and basic physicochemical parameters of the active ingredient product of methomyl as follows: ISO common name. methomyl CIPAC digital code. 264 Chemical name. S- methyl-N - [(methylcarbamoyl) oxy] thioacetate imidate Structure. Empirical formula. C5H10N2O2S Molecular weight. 162.20 (according to 2005 international relative atomic mass) Biological activity. Insecticidal Melting point. 78 °C ~ 79 °C Vapor pressure (25 °C). 0.72mPa Solubility (g/L, 25 °C). 58 water; Methanol 1000; 730 acetone; Ethanol 420 Stability. At room temperature, an aqueous solution decomposes slowly in the sunlight, exposure to air and alkaline medium decomposition speed

1 Scope

GB 23557-2009 is the Chinese national standard on methomyl emulsifiable concentrates, in the field of agriculture. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 27 April 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 November 2009. Classification: ICS 65.100.10, CCS G25. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the methomyl EC requirements, test methods and marking, labeling, packaging, storage and transportation. This standard applies to the original drug methomyl and preparation of the emulsifier is dissolved in a suitable solvent Methomyl EC.

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 1600 Determination of Water Pesticides Determination of

GB/T 1601 Pesticides pH value

GB/T 1603 Determination of emulsion stability of pesticide

GB/T 1604 Goods pesticide regulations for acceptance

GB/T 1605-2001 Sampling Method commercial pesticides

GB 4838 EC pesticide packaging

GB/T 19136 Determination of Pesticide Thermal storage stability

GB/T 19137 Pesticide cryogenic stability Determination

3 Requirements

3.1 Composition and appearance This product should meet the standards of the original drug methomyl made homogeneous oily liquid without visible suspended matter and sediment.

3.2 Technical Specifications Methomyl EC shall comply with the requirements of Table 1. Table

1 Methomyl EC Control Project Index project index 20% 40% Methomyl mass fraction /% 20.0 + 40.0 + 2.0-2.0 1.2-