NY 619-2002 Fu Ke Suspension Seed Coating Agent

This standard specifies the requirements, test methods, marking, labeling, packaging, storage and transportation of Fu Ke Suspension Seed Coating Agent. This standard applies to Fu Ke Suspension Seed Coating Agent. NY 619-2002 Fu Ke Suspension Seed Coating Agent NY619-2002 Standard download decompression password: www.bzxz.net

ICS.65.020
Agricultural Industry Standard of the People's Republic of China
NY 619—2002
Thiram and carbofuran suspension concentrates for seed dressing
Issued on 2002-12-30
Implemented on 2003-03-01
Issued by the Ministry of Agriculture of the People's Republic of China
Chapter 3 and Chapter 5 of this standard are mandatory, and the rest are recommended. NY619—2002
This standard is prepared in accordance with the requirements of GB/T17768-1999 "Specifications for the Preparation of Suspension Seed Dressing Product Standards" and is formulated in combination with the actual conditions of domestic production enterprises.
This standard is proposed by the Market and Economic Information Department of the Ministry of Agriculture. This standard is under the jurisdiction of the Pesticide Testing Institute of the Ministry of Agriculture. This standard is drafted by the Pesticide Testing Institute of the Ministry of Agriculture. The main drafters of this standard are Shan Weili, Liu Pingping and Zhang Zhiyi. The Institute for the Control of Pesticides of the Ministry of Agriculture is responsible for the interpretation of this standard. The common name, structural formula and basic physicochemical parameters of the active ingredients in the Fu·Ke suspension seed coating agent are as follows: a) Thiram
ISO common name: thiram
Chemical name: bis(N,N-dimethyl methylsulfonyl) disulfide Structural formula:
(CH)NCS—SCN(CHa)2
Empirical formula: CH12N2S4
Relative molecular mass: 240.4 (according to the 1997 international relative atomic mass) Biological activity: bactericidal
Melting point: 146℃
Solubility (20℃)/(g/L): 0.018 in water, 80 in acetone, 230 in chloroform, less than 10 in ethanol Stability: easily decomposed when exposed to alkali, long-term exposure to air, heat and humidity Partially degraded in the environment b) Carbofuran
ISoGeneral name: carbofuran
Chemical name: 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N-methylcarbamate Structural formula:
OCNHCH3
Empirical formula: C2HisNO
Relative molecular mass: 221.26 (according to the 1997 international relative atomic mass) Biological activity: insecticide
Melting point: 150℃～152℃
Vapor pressure (33℃): 2.7mPa
Solubility (20℃)/(mg/L): 320 in water, greater than 200 in dichloromethane, 20～50 in isopropanol Stability: Stable in acidic and neutral media, unstable in alkaline media. 1 Scope
This standard specifies the requirements, test methods, and marking, labeling, packaging, storage and transportation of Fu Ke suspension seed coating agent. This standard applies to Fu Ke suspension seed coating agent. 2 Normative referenced documents
NY619-2002
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions of 1
NY619--2002
are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T1601 Determination of pH value of pesticides
GB/T1604 Acceptance rules for commercial pesticides
GB/T1605 Sampling methods for commercial pesticides
GB3796 General rules for pesticide packaging
GB/T16150 Determination of fineness of pesticide powders and wettable powders NY 621--2002
Duo·Fu·Ke suspension seed coating agent
3 Requirements
Composition and appearance: This product should be composed of thiram, carbofuran technical and other adjuvants (including warning colorants) that meet the standards; it should be a flowable 3.11
uniform suspension. A small amount of precipitation or stratification may occur after long-term storage, but it should be able to return to its original state when shaken by hand at room temperature, and there should be no lumps. 3.2 Fu·Ke suspension seed coating agent should meet the requirements of Table 1. Table 1 Index of control items of Fu·Ke suspension seed coating agent
Total active ingredient content/(%)
Among them: Thiram content/(%)
Carbofuran content/(%)
pH range
Suspension rate/(%)
Sieve analysis (through 44μm test sieve)/(%)Viscosity range (25℃)/(mPa·s)
Film-forming property
Coating uniformity/(%)
Coating shedding rate/(%)
Low temperature stability
Hot storage stability
aThe indicated content should be accurate to 0.1%.
In normal production, the test should be carried out at least once every 3 months. b
4 Test method
4.1 Sampling
Indicated content*
Indicated content”
Indicated content”
100~600
According to the “Commercial Pesticide Sampling Method” in GB/T1605, the sampling packages shall be determined by random number table method, and the final sampling volume shall generally not be less than 250mL.
4.2 Identification test
High performance liquid chromatography method—This identification test can be carried out simultaneously with the determination of thiram and carbofuran content. Under the same chromatographic operating conditions, the relative difference between the retention time of a main chromatographic peak in the sample solution and the retention time of the chromatographic peak of thiram and carbofuran in the standard solution should be within 1.5%.
If there is any doubt about the identification by the above method, at least another effective method should be used for identification. 4.3 Determination of Thiram and Carbofuran Contents
4.3.1 Method Summary
NY619—2002
The sample was dissolved in methanol, and isopropanol decahydrate decaammonia water was used as the mobile phase. A stainless steel column filled with a C18 bonded stationary phase and a UV detector were used to separate and determine the Thiram and Carbofuran in the sample by high performance liquid chromatography, and the external standard method was used for quantification. 4.3.2 Reagents
Isopropanol;
Water: twice redistilled water;
Nitrogen water;
Thiram standard: known content, ≥98.0%; Carbofuran standard: known content, ≥99.0%. 4.3.3 Instruments
High performance liquid chromatograph: with variable wavelength UV detector; Chromatographic column: 250mmX4.6mm (id) stainless steel column, with Cl bonded stationary phase, 5μm; Ultrasonic cleaner;
Chromatographic data processor;
Injector: 10μL.
4.3.4 Chromatographic operating conditions
Mobile phase: isopropanol decahydrate decaammonia 335+65+0.1 (volume ratio); Flow rate: 1.0mL/min;
Detection wavelength: 270nm;
Injection volume: 10μL;
Column temperature: 30℃;
Retention time: 7.9min for thiram and 9.2min for carbofuran. The above operating parameters are typical (see Figure 1). The given operating parameters can be appropriately adjusted according to the characteristics of the instrument in order to obtain the best effect.
-Thiram;
2 Gram-bubble.
4.3.5 Determination steps
4.3.5.1 Preparation of standard solution
Figure 1 High performance liquid chromatogram of Fu·Ke suspension seed dressing agent 9.00
Weigh 30mg of carbofuran standard (accurate to 0.1mg) and appropriate amount of thiram standard (accurate to 0.1mg according to the proportion of active ingredients in the sample) and place them in the same 100mL volumetric flask, add 90mL of methanol, and use ultrasonic cleaning machine to ultrasonically treat for 10min to dissolve it. Take it out and put it to room temperature, dissolve it with methanol and dilute it to the scale, and shake it well. 4.3.5.2 Preparation of sample solution
After thoroughly mixing the sample, weigh a sample containing 30 mg (accurate to 0.1 mg) of carbofuran into a 100 ml volumetric flask, add 90 ml of methanol, and then use an ultrasonic cleaner to sonicate for 10 minutes to dissolve it. Take it out and let it cool to room temperature, dissolve it with methanol and dilute it to the scale, and shake it. Transfer part of the solution to a 10 mL stoppered centrifuge tube, centrifuge it at a speed of 2000 r/min until the solution is clear, and set aside. 3
NY619-2002
4.3.5.3 Determination
Under the above operating conditions, after the instrument baseline is stable, continuously inject several needles of standard solution until the peak area of ​​thiram (carbofuran) of two adjacent needles changes by less than 1.5%, and then determine in the order of standard solution, sample solution, sample solution, and standard solution. 4.3.6 Calculation
Average the peak areas of thiram (carbofuran) in the two sample solutions and the two standard solutions before and after the sample, and calculate the content of thiram (carbofuran) in the sample expressed as mass fraction X, (%), according to formula (1): X = Am×P
Where:
A, the average value of the peak area of ​​thiram (carbofuran) in the standard solution; A2——the average value of the peak area of ​​thiram (carbofuran) in two adjacent sample solutions; m1-the mass of thiram (carbofuran) standard sample, in milligrams (mg); m2——the mass of the sample, in milligrams (mg); P——the mass fraction of thiram or carbofuran in the standard sample, %. 4.3.7 Allowable difference
The relative difference between the results of two parallel determinations should not be greater than 5%, and the arithmetic mean is taken as the determination result. 4.4 Determination of pH valuebzxZ.net
Determine in accordance with GB/T1601.
5 Determination of suspension rate
According to 4.5 of NY621-2002. 4.6 Determination of sieve analysis
According to the wet sieving method in GB/T16150.
4.7 Determination of viscosity
According to 4.7 of NY621-2002. 4.8 Determination of film-forming property
According to 4.8 of NY621-2002. 4.9 Determination of coating uniformity
According to 4.9 of NY621-2002. 4.10 Determination of coating shedding rate
According to 4.10 of NY621-2002. 4.11 Low temperature stability test
4.11.1 Summary of method
The sample is kept at 0℃ for 1h, and the appearance is observed for any changes. Continue to store at 0℃ for 7 days and test its physical and chemical indicators. 4.11.2 Instruments
Refrigerator: maintain 0℃±1℃;
Stoppered conical flask: 100mL.
4.11.3 Test steps
Take 80mL of sample and place it in a stoppered conical flask, keep it at 0℃±1℃ for 1h, stir it every 15min for 15s each time, and observe whether its appearance changes. Continue to place it under the above conditions for 7 days. After 7 days, take out the conical flask and return it to room temperature. Test the viscosity and sieve analysis indicators. The test results meet the standard requirements and are qualified. 4.12 Thermal stability test
4.12.1 Apparatus
Thermostatic box (or thermostatic water bath): 54℃±2℃; 4
Ampoule (or glass bottle with stopper that can still be sealed at 54℃±2℃): 50mL; Medical syringe: 50mL.
4.12.2 Test steps
NY619—2002
Use a syringe to inject about 30mL of the sample into a clean ampoule (avoid the sample from contacting the bottleneck), and seal it with a high-temperature flame (avoid the solvent from volatilizing). Seal at least 3 bottles and weigh them separately. Place the sealed ampoule in a metal container, and then place the metal container in a thermostatic box (or thermostatic water bath) at 54℃±2℃ for 14 days, take it out, and weigh the ampoules separately. For samples that have not changed in mass, test the content of thiram and carbofuran and the suspension rate within 24 hours. The test results show that the relative decomposition rates of thiram and carbofuran are less than 5% and the suspension rates are ≥80%, which are considered qualified.
4.13 Inspection and acceptance of products
The inspection and acceptance of products shall comply with the relevant provisions of GB/T1604. The rounded value comparison method shall be used for the processing of limit values. 5 Marking, labeling, packaging, storage and transportation
5.1 The marking, labeling and packaging of Fu·Ke suspension seed coating agent shall comply with the relevant provisions of GB3796. 5.2 The packaging of Fu·Ke suspension seed coating agent shall be in units of 10kg, 25kg, 50kg and 100kg. Other forms of packaging may also be used according to user requirements or ordering agreements, but they must comply with the requirements of GB3796. 5.3 The packages shall be stored in a ventilated and dry warehouse. 5.4 During storage and transportation, strictly prevent moisture and sunlight, do not mix with food, seeds, and feed, avoid contact with skin and eyes, and prevent inhalation through the mouth. 5.5 In addition to the corresponding toxicity mark, the instruction manual or packaging container should also include toxicity description, poisoning symptoms, detoxification methods and first aid measures. If ingested by mistake, atropine can be used for detoxification. 5.6 Under the specified transportation conditions, the quality assurance period of Fu Ke Suspension Seed Coating Agent is 2 years from the date of production.
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