HG/T 2743.4-1996 Specification for the preparation of product standards for pesticide composite water suspension concentrates
Some standard content:
HG/T2743.4-1996
The compound preparations scientifically mixed with different pesticides can greatly improve the efficacy, reduce toxicity and delay the emergence of drug resistance. Therefore, the development and application of compound preparations of pesticides are important ways to use pesticides rationally and effectively prevent and eliminate diseases, insects and weeds. At present, there are hundreds of compound preparations of pesticides in my country, but many varieties lack scientific experimental basis. The preparation of compound preparation standards is mostly chaotic and of varying levels. In order to standardize the preparation format of pesticide compound preparations and improve the standard level, this standard is formulated on the basis of GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Drafting and Expression Rules of Standards Part 1: Basic Provisions for Standard Preparation" and the industry standard ZBG23001-86 of the Ministry of Chemical Industry "Principles and Procedures for Naming Common Names of Pesticides", and on the basis of HG/T2467 "Format for Preparation of Pesticide Product Standards". Appendix A of this standard is the appendix of the standard.
This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Shenyang Chemical Research Institute of the Ministry of Chemical Industry. This standard was drafted by Shenyang Chemical Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are: Hou Yukai, Wang Xuecheng, Lou Shaowei, Yang Jian, Zhao Xinxin. 305
HG/T2743.4-1996
Contents to be included in the preface of pesticide compound preparation product standards 1. Special part double-curing
-The number and degree of adoption of international standards or foreign advanced standards, the differences and reasons with the adopted standards;-The purpose and basis of drafting the standard: the test comparison results of the toxicity, toxicity and efficacy of the compound preparation and the active ingredients of the compound preparation should be provided, and the degree of improvement in efficacy and reduction in toxicity of the compound preparation should be explained;-Requirements for the transition period of standard implementation: the 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 suggestive appendices. 2. Basic part information
This standard is proposed by.
This standard is under the jurisdiction of….
Drafting unit of this standard: When necessary, the responsible drafting unit and participating drafting units may be specified. Who are the main drafters of this standard: Generally no more than 5 people. 306
Chemical Industry Standard of the People's Republic of China
Specification for the preparation of pesticide compound water suspension product standards HG/T 2743. 4—1996
This standard specifies the specification for the preparation of pesticide compound water suspension product standards, and is applicable to the preparation of corresponding national standards, industry standards, local standards and enterprise standards for pesticide compound water suspension products. Other names, structural formulas and basic physicochemical parameters of each active ingredient in this product are as follows: a) (Generic name of active ingredient 1)
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, herbicide····) Melting point·℃
Boiling point·℃
Atmospheric pressure (20℃): Pa
Solubility (g/L, 20℃):
Stability: (stability to acid, alkali, light, heat, etc., half-life) b) (Generic name of active ingredient 2)
Content is the same as a.
c) ... (Generic name of active ingredient 3)
Content is the same as a.
1 Scope
This standard specifies the requirements, test methods, and marking, labeling, packaging, storage and transportation of ·… (name of compound preparation) aqueous suspension. This standard applies to ·… (name of compound preparation) aqueous suspension made from (common name of active ingredient 1), … (common name of active ingredient 2), … (common name of active ingredient 3) technical materials, fillers and additives that meet the standards. 2 Referenced 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 will be revised, and all parties using this standard should explore the possibility of using the latest versions of the following standards. The order of citing standards is domestic first and then foreign. Standards at all levels should be arranged step by step, with national standards first and then industry standards; standards at the same level are arranged in the order of the standard number, and standards in different industries are arranged in alphabetical order according to the standard code. GB/T 1601—93 Method for determination of pH value of pesticides GB/T1604—1995 Acceptance rules for commercial pesticides GB/T1605—79 (89) Sampling methods for commercial pesticides Approved by the Ministry of Chemical Industry of the People's Republic of China on April 8, 1996 and implemented on September 1, 1996
GB3796—-83 General rules for pesticide packaging
HG/T 2743.4—1996
GB/T14825--93 Determination method of suspension rate of pesticide wettable powder GB/T16150—1995 Determination method of fineness of pesticide powder and wettable powder HG/T2467—93 Format for writing pesticide product standards HG/T2743.1—1996 Specification for writing pesticide compound emulsifiable concentrate product standards ZBG23001—86 Principles and procedures for naming common names of pesticides 3 Requirements
3.1 Appearance: It should be a flowable, easily measurable suspension liquid; precipitation may occur during storage, but it should return to its original state after being shaken by hand; there should be no lumps.
3.2.. (Name of compound preparation) Water suspension concentrate should meet the requirements of Table 1. Table 1 (Name of compound preparation) Control items of water suspension concentrate Index item
*(Generic name of active ingredient 1) content, %
(Generic name of active ingredient 2) content, %
.(Generic name of active ingredient 3) content, %
…(Name of harmful impurities) content, %
PH value range
Pourability
Suspension rate, %
Residue after pouring, %
Residue after washing, %
Sieve analysis (through 75 μm test sieve), %Low temperature stability
Hot storage stability
(or specified range)bZxz.net
(or specified range)
1 The listed items are not exhaustive, nor are they required to be included in all the standards for any pesticide compound water suspension concentrate. They can be increased or decreased according to the specific circumstances of different pesticide compound products.
2 Low temperature stability and hot storage stability test, at least once a month. 4 Test method
4.1 Sampling
Carry out in accordance with the method of GB/T1605 "Sampling of emulsion and liquid state". The sampling package is determined by the random number table method, and the final sampling volume should generally be not less than 250mL.
4.2 Identification test
Write with reference to 4.2 of HG/T2743.1 (the active ingredient should be extracted before the identification test). 4.3... (Active ingredient 1 common name) content determination is written in accordance with the format of the same determination method in HG/T2467 and this standard. (Active ingredient 2 common name) content determination 4.4
HG/T 2743. 4-1996
Write with reference to the format of the same determination method in HG/T 2467 and this standard. 4.5 Determination of the content of…(common name of active ingredient 3) shall be written in accordance with the format of the same determination method in HG/T 2467 and this standard. 4.6 Determination of the content of…(name of harmful impurities) shall be written in accordance with the specific determination method adopted.
4.7 Determination of pH value
Perform in accordance with GB/T1601.
4.8 Pourability test
4.8.1 Method summary
After placing the water suspension sample in the container for a certain period of time, pour it according to the prescribed procedure and determine the amount of sample retained in the container; after washing the container with water, determine the amount of sample in the container. 4.8.2 Instrument
Vacuum with ground stopper: (500±2)mL; height of the volumetric cylinder is 39cm, and the distance between the upper and lower scales is 25cm (or other equivalent containers suitable for the determination of pourability).
4.8.3 Test steps
Mix a sufficient amount of sample and promptly place a portion of it in the weighed cylinder (including the stopper), fill it to 8/10 of the cylinder volume, plug the ground stopper, weigh it, and leave it for a certain time (such as 24h). Open the stopper, tilt the cylinder at 45°, and pour it for 60s. Pour it for another 60s, and weigh the cylinder and stopper again.
Pour water (20℃) equivalent to 80% of the cylinder volume into the cylinder, plug the ground stopper, shake the cylinder 10 times, pour the contents according to the above operation, and weigh the cylinder and stopper for the third time. 4.8.4 Calculation
The residue X2-1 (%) after pouring and the residue X2-2 (%) after washing are calculated according to formula (2-1) and formula (2-2) respectively: X
Wherein: mi-
The mass of the measuring tube, ground stopper and sample, g; m2 = mo × 100
mi - mo
ms mo × 100
mi - mo
m -The mass of the measuring tube, ground stopper and residue after pouring, g, m-The mass of the measuring tube, ground stopper and residue after washing, g; m -The mass of the measuring tube and ground stopper after constant weight, g. 4. 9 Determination of suspension rate
Perform according to GB/T14825 (specify the specific operation steps such as sample weight and drying or extraction). 4.10 Sieve analysis
Perform according to the wet sieving method in GB/T16150.
4. 11 Low temperature stability test
4.11.1 Method summary
·( 2-1 )
（2-2）
The sample is kept at 0℃ for 1 hour, and the appearance is observed for any changes. Continue to store at 0℃ for 7 days, and test whether its physical properties meet the standard requirements. 4.11.2 Instrument
Refrigerator: maintain (0±1)℃.
4.11.3 Test steps
Put 80mL of sample in a 100mL beaker, cool it to (0±1)℃ in a refrigerator, and keep it for 1 hour. Stir once every 15min for 15s each time, and check and record whether there are any changes in appearance. Put the beaker back into the refrigerator and continue to place it at (0±1)℃ for 7 days. After 7 days, take it out, return the beaker to room temperature, and test the suspension rate and sieve analysis. It is qualified if it meets the standard requirements. 309
4.12 Thermal storage stability test
4.12.1 Apparatus
Constant overflow box (or constant temperature water bath): (54±2)℃; HG/T 2743.4—1996
A bottle (or a stoppered glass bottle that can still be sealed at 54℃): 50mL; Medical syringe: 50mL.
4.12.2 Test steps
Use a syringe to inject about 30mL of the sample into a clean bottle (avoid the sample from contacting the bottleneck), place the bottle in an ice-salt bath to cool, and seal it with a high-temperature flame (to avoid solvent volatilization). Seal at least 3 bottles and weigh them separately. Place the sealed bottles in a metal container, and then place the metal container in a (54±2)℃ constant temperature box (or constant temperature water bath) for 14 days. Take out the sample, wipe it clean and weigh it separately. If the mass has not changed, inspect the specified items within 24 hours (when writing specific product standards, the criteria for judging whether the heat storage stability test is qualified should be specified).
4.13 Inspection and acceptance of products
It should comply with the relevant provisions of GB/T1604. For the processing of limit values, the rounded value comparison method should be adopted. 5 Marking, labeling, packaging, storage and transportation
5.1.. (Name of compound preparation) The marking, labeling and packaging of the water suspension should comply with the relevant provisions of GB3796, and should have the production license (production permit) number and trademark.
5.2 Prepare it based on the specific packaging conditions of each production and processing plant. 5.3 According to user requirements or ordering agreement, other forms of packaging can be used, but they must comply with the relevant requirements of GB3796. 5.4 The packages should be stored in a ventilated and dry warehouse. 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 signs, the instructions for use or packaging containers should also have toxicity instructions, poisoning symptoms, detoxification methods and first aid measures.
5.7 Warranty period: Under the specified storage and transportation conditions, the warranty period of .. (name of compound preparation) water suspension is at least 2 years from the date of production. During the warranty period, ….
HG/T2743.4—1996
Appendix A
(Appendix to the standard)
Principles for naming common names of pesticide compound preparations According to the basic principle of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides" Article 1.2 "The common name of pesticide preparations (single or mixed) should include three parts, namely, the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of the active ingredients", the common name of the pesticide compound preparations should be composed of the prefixes or pronouns of the common names of the active ingredients. The naming consists of three parts: the first is the total content of each active ingredient in the compound preparation (weight percentage or g/L (20℃)); the second is the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient. A dot is inserted between the prefixes (or the first few characters) to reflect the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 311The warranty period of (name of compound preparation) water suspension concentrate is at least 2 years from the date of production. During the warranty period,…
HG/T2743.4-1996
Appendix A
(Appendix to the standard)
Principles for naming common names of compound pesticide preparations According to the basic principle of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides" Article 1.2 "The common name of pesticide preparations (single or mixed) should include three parts, namely, the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of each active ingredient", the common name of the compound pesticide preparation should be composed of the following three parts: The naming consists of three parts: the first is the total content of each active ingredient in the compound preparation (weight percentage or g/L (20℃)); the second is the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient. A dot is inserted between the prefixes (or the first few characters) to reflect the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 311The warranty period of (name of compound preparation) water suspension concentrate is at least 2 years from the date of production. During the warranty period,…
HG/T2743.4-1996
Appendix A
(Appendix to the standard)
Principles for naming common names of compound pesticide preparations According to the basic principle of ZBG23001-86 "Principles and Procedures for Naming Common Names of Pesticides" Article 1.2 "The common name of pesticide preparations (single or mixed) should include three parts, namely, the mass percentage of the active ingredient, the common name of the active ingredient and the dosage form. The common name of the mixed preparation can be composed of the prefixes or pronouns of the common names of each active ingredient", the common name of the compound pesticide preparation should be composed of the following three parts: The naming consists of three parts: the first is the total content of each active ingredient in the compound preparation (weight percentage or g/L (20℃)); the second is the common name of the compound preparation, which is composed of the prefixes (or the first few characters) of the common names of each active ingredient. A dot is inserted between the prefixes (or the first few characters) to reflect the compound preparation; the order of each active ingredient should generally be determined by its content, with the higher one in front and the lower one in the back; it can also be ranked according to its contribution to the efficacy, with the one that contributes the most to the efficacy being ranked in front; the third is the dosage form of the compound preparation, such as powder, emulsifiable concentrate, wettable powder, aqueous suspension, etc. For example, 3% methyl phthalate powder, 40% dimethoate emulsifiable concentrate, 20% cypermethrin emulsifiable concentrate, 50% polysulfur suspension, etc. If a synergist is added to the compound preparation, the synergist is not counted as an active ingredient, and the proportion it occupies does not enter the total content of the active ingredients. 311
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