GB 22620-2008Bifenthrin emulsifiable concentrates (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

This document replaces GB/T 22620-2008 "Bifenthrin Emulsifiable Concentrate": Compared with GB/T 22620-2008, except for structural adjustments and editing in addition to sexual changes, the main technical changes are as follows:

---Changed the scope (see Chapter 1, Chapter 1 of the:2008 edition);

---Deleted the composition and 10% specification (see 3.1 and Table 1 of the:2008 version);

---Changed the mass fraction and mass concentration of the 25g/L specification and the mass fraction, moisture, and emulsion stability of the 100g/L specification:

Low temperature stability (see Table 1, Table 1 of the:2008 edition);

--- Added permanent foaming control items and measurement methods (see Table 1, 5:9);

---Added pH value control items after thermal storage (see Table 1);

---Deleted the test date interval requirements for low temperature stability and thermal storage stability (see Table 1 of the:2008 version);

---Added liquid chromatography identification test (see 5.3:1);

---Added liquid chromatography method for determination of bifenthrin mass fraction (see 5.5:1);

---Changed the gas chromatography method for determination of bifenthrin mass fraction (see 5.5:2, 4:3 of the:2008 edition);

---Changed the determination method of moisture, low temperature stability test and thermal storage stability test (see 5.6, 5:10, 5:11,:2008 edition 4:4, 4:7, 4:8);

---Added inspection rules (see Chapter 6);

---Added 500g (mL) net content specification (see 8.1):

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

1 Scope

This document stipulates the technical requirements, inspection rules, acceptance and quality assurance period of bifenthrin emulsifiable concentrate, as well as the marking, labeling, packaging and storage this paper describes the test method for bifenthrin emulsifiable concentrate:

This document applies to the quality control of bifenthrin emulsifiable concentrate products:

Note: See Appendix A for other names, structural formulas and basic physical and chemical parameters of bifenthrin:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations for undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 1600-2021 Pesticide moisture determination method GB/T 1601 Determination of pH value of pesticides GB/T 1603 Method for determination of stability of pesticide emulsion GB/T 1604 Commercial Pesticide Acceptance Rules GB/T 1605-2001 Sampling methods for commercial pesticides GB 4838 Pesticide emulsifiable concentrate packaging GB/T 8170-2008 Numerical rounding rules and representation and determination of limit values GB/T 19136-2021 Determination method of thermal storage stability of pesticides GB/T 19137-2003 Method for determination of low-temperature stability of pesticides GB/T 28137 Determination method of persistent foaming property of pesticides GB/T 32776-2016 Pesticide density determination method

3 Terms and definitions

There are no terms or definitions to be defined in this document:

4 Technical requirements

4.1 Appearance

Stable homogeneous liquid, no visible suspended solids and sediments:

4.2 Technical indicators Bifenthrin emulsifiable concentrate should comply with the requirements of Table 1: