HG/T 2467.3-1996 Specification for the preparation of pesticide wettable powder product standards
Some standard content:
HG/T2467.3—1996
HG/T2467-93 "Specifications for the Preparation of Pesticide Product Standards" industry standard is based on the original national and industry standards for pesticides, absorbs the common points and advantages of international pesticide standards and foreign advanced standards, and is formulated in accordance with the writing requirements of GB1.1-87 "Guidelines for Standardization Work". In 1993, according to Part 3 of the IEC/ISO Guidelines "Rules for the Drafting and Expression of International Standards", GB1.1-87 was revised, and it was required to implement GB/T1.1-1993 from 1995. Therefore, HG/T2467-93, which was compiled in accordance with GB1.1-87, should also be revised in a timely manner to meet the needs of compiling newly formulated and revised national standards, industry standards, local standards and enterprise standards for pesticide products. The main points of this standard revision are as follows:
1. Added the preface and determined the main contents that the preface should include; 2. The title of Chapter 1, "Subject Content and Scope of Application", was changed to "Scope"; 3. A prescribed introduction was added before the reference standard; 4. The product classification chapter was cancelled;
5. The title of Chapter 3, "Technical Requirements", was changed to "Requirements"; 6. The inspection rules chapter was cancelled, and the sampling method of the chapter was changed to "sampling", which was placed at the beginning of the test method chapter as one of the items. Considering that most pesticide product standards are mandatory, the inspection and acceptance rules of the products are still retained and placed at the end of the test method chapter as one of the items; 7. The original title of Chapter 7, "Marking, Packaging, Transportation and Storage", was changed to "Marking, Labeling, Packaging, Storage and Transportation", as Chapter 5 of the revised version; 8. Some parts of the original standard were also modified and supplemented. For example, it was clarified that the rounded value comparison method is used for the treatment of limit values. This standard replaces HG/T2467-93 from the date of implementation. This standard is issued by the Chemical Industry of the People's Republic of China. Proposed by the Technical Supervision Department of the Ministry of Chemical Industry. This standard is under the jurisdiction of the Shenyang Institute of Chemical Industry of the Ministry of Chemical Industry. This standard was drafted by the Shenyang Institute of Chemical Industry of the Ministry of Chemical Industry. The main drafters of this standard: Hou Yukai, Wang Xuecheng, Zhao Xinxin, Yang Jian, Lou Shaowei. 254
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1. Special part letter
Contents that should be included in the foreword of the product standard
-Indicate the degree and version of adoption of international standards or advanced foreign standards, and explain the adoption of international guidelines or other similar standards, specifications and documents.
Indicate the main technical differences with the adopted object and brief reasons; explain the changes in important technical contents from the previous version; explain the relationship with other standard documents or other documents; - Requirements for the implementation transition period; Explanation that this standard leads to the abolition or replacement of all or part of other standard documents; - Indicate which appendices are standard appendices and which are indicative appendices. 2. Basic part value
This standard is proposed by.
This standard is managed by.
—Drafting unit of this standard: When necessary, the responsible drafting unit and participating drafting units may be specified. Main drafters of this standard: generally not more than 5 people. 255
Chemical Industry Standard of the People's Republic of China
Specification for the preparation of pesticide wettable powder product standards HG/T2467.3—1996
This standard specifies the specification for the preparation of pesticide wettable powder product standards, and is applicable to the preparation of corresponding national standards, industry standards, local standards and enterprise standards for pesticide products.
Other names, structural formulas and basic physical and chemical parameters of the active ingredient (common name) of this product are as follows : ISO common name:
Trade name:
CIPAC digital code:
Chemical name;
Structural formula:
Empirical formula:
Relative molecular mass (calculated according to 19×× international relative atomic mass): Biological activity·(insecticide, acaricide, fungicide, weed killer) Melting point.℃
Boiling point·…℃
Vapor pressure (20℃).Pa
Solubility (g/L, 20℃):
Stability: (stability to acid, alkali, light and heat, half-life) 1 Scope
This standard specifies the requirements, test methods, and marking, labeling, packaging, storage and transportation of common name wettable powders. This standard applies to (common name) wettable powders made from (common name technical materials, suitable adjuvants and fillers that meet the standard.
2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. The order of cited standards is domestic first and then foreign; standards of all levels should be arranged step by step, with national standards first and then industry standards; standards of the same level should be arranged in order of standard numbers; standards of different industries should be arranged in alphabetical order of standard codes. GB/T1601-93 Determination of pH value of pesticides GB/T1604--1995 Acceptance rules for commercial pesticides GB/T1605-79 (89) Sampling method for commercial pesticides GB3796-83 General rules for pesticide packaging
GB/T5451-86 Pesticides Determination of wettability of wettable powders GB/T14825-93 Determination of suspension rate of wettable powders of pesticides Approved by the Ministry of Chemical Industry of the People's Republic of China on April 8, 1996 256
Implementation on September 1, 1996
HG/T2467.3-1996
GB/T16150-1995 Determination of fineness of pesticide powders and wettable powders HG/T2467.1-1996 Standard for pesticide technical products Standard writing specification 3 requirements
3.1 Appearance: loose powder with uniform composition, no lumps. 3.2... (common name) wettable powder should meet the requirements of Table 1. Table 1... (common name) wettable powder control items index items
(common name) content, %
· (name of harmful impurities) content, %
PH value range
Suspension rate, %
Wetting time, s
Fineness (through 44 μm sieve), %
Accelerated storage test
(or specified range)
The listed items are not exhaustive, nor are they required to be included in all wettable powder standards. Alkalinity can be added according to the actual conditions of different pesticide products.
2 Under normal circumstances, accelerated storage test should be carried out at least once a month. 4
Test method
4.1 Sampling
Carry out in accordance with the "Sampling method for powders and wettable powders" in GB/T1605. Use the random number table method to determine the sampling packages; the final sampling volume should generally be no less than 250g.
4.2 Identification test
Write according to 4.2 of HG/T2467.1 (before the identification test, the active ingredient should be extracted). 4.3 Determination of the content of ... (common name) (taking chemical analysis as an example) 4.3.1 Principle of the method
Briefly describe the main steps and basic principles of the method. List the chemical equation when necessary and express it as much as possible with ionic reaction formula. 4.3.2 Reagents and solutions
List them in the following order:
a) Commercial reagents;
b) Solutions or suspensions, and write their approximate concentrations; c) Standard titration solutions and other standard solutions; d) Indicator solution.
The concentration of standard titration solutions can be expressed in moi/L; the concentration of other solutions can be expressed in g/L or %(V/V), %(m/m) [(m/m) can be omitted, and the concentration of dilute solutions can be expressed in V, +V, or V1-V2. 4.3.3 Instruments
Special instruments and equipment used in the test should be listed, and their main characteristics (technical requirements) and special requirements should be explained. When these special requirements affect the safety and accuracy and precision of the method in method 257
HG/T 2467. 3-1996
, they should be written out in particular. Special types of instruments and equipment and their components should be described in drawings according to drawing standards. 4.3.4 Preparation of samples
The samples are prepared from laboratory samples, and the preparation steps (such as grinding, reduction, etc.) should be written out. And the characteristics of the samples (such as particle size, approximate quantity, etc.) should be specified.
4.3.5 Determination steps
Each operation step in the analysis should be accurately described, including all inseparable pre-operations. The determination steps may involve instrument calibration tests, drawing of working curves, blank determinations, and safety measures, all of which should be clearly described. 4.3.6 Expression of analysis results
a) The calculation formula should be listed, simplified, and the meaning and unit of the symbols, codes and coefficients in the formula should be stated. b) The following letters should be used to represent the quantity represented in the calculation formula, such as m (lowercase italics) for mass, V (uppercase italics) for volume, and c (lowercase italics) for concentration.
4.3.7 Allowable difference
The difference between two parallel determination results shall not exceed %. 4.4 Determination of impurity content
Write according to the specific method used.
4.5 Determination of pH valuebzxZ.net
Perform according to GB/T1601.
4.6 Determination of suspension rate
Perform according to GB/T14825 (the specific operation steps such as sample weight and drying or extraction should also be stated). 4.7 Determination of wetting time
Perform according to GB5451.
4.8 Determination of fineness
Perform according to the wet sieving method in GB/T16150.
4.9 Accelerated storage test
4.9.1 Summary of method
The product is aged faster through the pressurized hot storage test to predict the changes in the performance of the product stored at room temperature. 4.9.2 Apparatus
Beaker: 250mL, inner diameter 6.0~6.5cm; disc: diameter should match the beaker, just produce an average pressure of 2.45kPa. 4.9.3 Test steps
Put 20g of sample into the beaker without any pressure, so that it is spread into a smooth and uniform layer of equal thickness. Press the disc on the sample, put the beaker in an oven, and store it at...℃ for...days. Take out the beaker, take out the disc, put it in a desiccator, and let the sample cool to room temperature. Within 24h, complete the determination of the active ingredient content and suspension rate (when writing specific product standards, the judgment principle of accelerated storage test qualification should be specified). 4.10 Inspection and acceptance of products
Should comply with the relevant provisions of GB/T1604. The rounded value comparison method is used for the processing of limit values. 5.1 The packaging and labeling of ··(common name) wettable powder shall comply with the relevant provisions of GB3796 and shall have the production license (production permit) number and trademark.
5.2 Prepared in accordance with the specific packaging regulations of each production and processing plant. 258
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5.3 Other forms of packaging may be used according to user requirements or order agreements, but they must comply with the relevant requirements of GB3796. 5.4 Packages should be stored in ventilated and dry warehouses. 5.5 During storage and transportation, strictly prevent moisture and sunlight, do not mix with food, seeds, feed, avoid contact with skin and eyes, and prevent inhalation through the mouth and nose. 5.6 Safety: In addition to the corresponding toxicity mark, the instruction manual or packaging container should also have toxicity instructions, precautions for use, symptoms of poisoning, detoxification methods and rescue measures. 5.7 Warranty period: Under the specified storage and transportation conditions, the warranty period of ·· (common name) wettable powder is at least 2 years from the date of production. During the warranty period,
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