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GB 28139-2011 English PDF

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GB 28139-2011: [GB/T 28139-2011] 70% Imidacloprid water dispersible granules
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GB 28139-2011English289 Add to Cart 3 days [Need to translate] [GB/T 28139-2011] 70% Imidacloprid water dispersible granules Valid GB 28139-2011

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Standard similar to GB 28139-2011

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Basic data

Standard ID GB 28139-2011 (GB28139-2011)
Description (Translated English) [GB/T 28139-2011] 70% Imidacloprid water dispersible granules
Sector / Industry National Standard
Classification of Chinese Standard G25
Classification of International Standard 65.100.10
Word Count Estimation 11,115
Date of Issue 2011-12-30
Date of Implementation 2012-04-15
Quoted Standard GB/T 1600; GB/T 1601; GB/T 1604; GB/T 1605-2001; GB 3796; GB/T 5451; GB/T 6682-2008; GB/T 8170-2008; GB/T 14825; GB/T 16150; GB/T 19136
Adopted Standard FAO specifications 582/WG-2006, MOD
Regulation (derived from) Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies the Imidacloprid WDG requirements, test methods and marking, labeling, packaging, storage and warranty. This standard applies to imidacloprid, carriers and additives from the processing of Imidacloprid WDG.

GB 28139-2011: [GB/T 28139-2011] 70% Imidacloprid water dispersible granules

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70% Imidacloprid water dispersible granules ICS 65.100.10 G25 National Standards of People's Republic of China Imidacloprid 70% water dispersible granules Published 2011-12-30 2012-04-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China issued

Foreword

This standard in Chapter 3, Section 5 is mandatory, the rest are recommended. This standard was drafted in accordance with rules GB/T 1.1-2009 given. This draft standard method using the reformed modified using FAO Specifications 582/WG (May2006) "imidacloprid water dispersible granules." Main reasons for this difference and the standard FAO Specification 582/WG (May2006) as follows. --- This standard specifies the wetting time ≤60s, FAO specifications defined wetting time is ≤5s; This standard specifies --- Fineness (75μm test sieve) was ≥98%, FAO Specifications predetermined fineness ≥99.9%; --- the FAO Specifications predetermined control dust and flowability two indicators, the standard size (on the left 100μm test sieve) ≥ 90%, instead of the two indicators dust and mobility; --- The standard controlling the moisture content and pH range of two indicators, FAO specifications uncontrolled these two indicators. This standard refers to Standard projects comprehensive than FAO specifications. Please note that some of the content of this document may involve patents, the issuing authority of this document does not assume responsibility for identifying these patents. The standard proposed by China Petroleum and Chemical Industry Federation. This standard by the National Pesticide Standardization Technical Committee (SAC/TC133). This standard is drafted. Shenyang Chemical Research Institute Co., Ltd. Participated in the drafting of this standard. Zhejiang Hisun Chemical Co., Ltd., Shanghai Health Products Co., Ltd. of agricultural biochemistry, Dongguan City Reid abundance Health Technology Co., Ltd., Jiangsu Suke Sheng Group Co., Ltd., Shanghai Pharmaceutical Co., Ltd. grasses, Hebei double Kyrgyzstan Chemical Co., Qingdao Montreal Pharmaceutical Co., Ltd., Nanjing Red Sun Co., Ltd., Shanghai Chemical Co., Ltd. Wyatt. The main drafters. Hou Chunqing, Zan Yan Kun, Wang Tiansheng, Lin Jun, Luo Fenghua, Wu Jing, COMMUNIST Zheng Yuejie, Li Xuechen, Liu Kuitao, Cheung Yu. Imidacloprid 70% water dispersible granules

1 Scope

This standard specifies imidacloprid water dispersible granules of requirements, test methods and marking, labeling, packaging, storage and period. This standard applies to the processing of imidacloprid, imidacloprid carriers and adjuvants made water dispersible granules. Note. The other name, structural formula and basic physicochemical parameters of imidacloprid see Appendix A.

2 Normative references

The following documents for the application of this document is essential. For dated references, only applies to the version dated paper Pieces. For undated references, the latest edition (including any amendments) applies to this document. GB/T 1600 Pesticide Method Moisture Determination 1601 pH value pesticides GB/T GB/T 1604 pesticide regulations for acceptance of goods GB/T 1605-2001 sampling commercial pesticides GB 3796 pesticide packaging General GB/T 5451 method for measuring the wettability of agrochemical wettable GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) GB/T 8170-2008 rounding off means about rules and determining limiting values GB/T 14825 Method for determination of pesticide suspension GB/T 16150 pesticide powders, wettable powder fineness measurement method GB T 19136 Determination of heat storage stability of pesticide / 3.1 Composition and appearance This product shall standard imidacloprid original drug, carriers and adjuvants are made, should be dry, free-flowing, almost no dust, no visible The extraneous matter and hard lumps. 3.2 Technical Specifications Imidacloprid water dispersible granule should meet the requirements of Table 1. Table 1 imidacloprid water dispersible granules Item Index Control Item Index Imidacloprid content/2.5-2.5 70.0% Moisture /% ≤ 2.0 pH range 6.0 to 9.0 TABLE 1 (cont.) Item Index Wetting time/s ≤ 60 Fineness (75μm test sieve) /% ≥ 98 Suspension rate /% ≥ 90 Particle size (on the left 100μm test sieve) /% ≥ 90 Dispersibility /% ≥ 80 Persistent foaming (amount of foam after 1min)/mL ≤ 20 Passing a heat storage stability Thermal storage stability test was measured every three months, at least once during a normal production. Test Method 4 Safety Tips. to use this standard shall have practical experience of laboratory work. This standard does not indicate any safety issues. Make With those who have the responsibility to take appropriate safety and health practices and to ensure compliance with the provisions of relevant state laws and regulations. 4.1 General provisions This standard reagent in the absence of water and other requirements stated, refer to three predetermined analytical reagents and GB/T 6682-2008 of water. The test results performed by determining 4.3.3 rounding value in comparison 8170-2008 GB/T . 4.2 Sampling Carried out in GB/T 1605-2001 of "solid preparation sampling" approach. Determining Sample packages with a random number table method; final sample size Not less than 600g. 4.3 Identification Test The present liquid chromatography --- identification test can be conducted simultaneously with the determination of the mass fraction of imidacloprid. Chromatography under the same operating conditions, the test A solution sample peak retention time of the standard solution imidacloprid peak retention time, the relative difference of 1.5% should be Or less. 4.4 Determination of the content of Imidacloprid 4.4.1 Method summary Sample dissolved in mobile phase, methanol and water as mobile phase, used as a filler C18 stainless steel column and UV detector at a wavelength of At 260nm, of the sample imidacloprid RP-HPLC separation and determination, external standard. 4.4.2 Reagents and solutions Methanol. HPLC grade; Water. The new secondary steam distilled water; Imidacloprid Sample. A known mass fraction w≥99.0%. 4.4.3 Instruments HPLC. a variable wavelength UV detector; Chromatographic data processor or chromatography workstation; Column. 250mm × 4.6mm (id) stainless steel column, C18,5μm filler contents (or column with equivalent effect); Filter. membrane pore size of about 0.45 m; Microsyringe. 50μL; Quantitative sampling tube. 5μL; Ultrasonic cleaning. 4.4.4 HPLC operating conditions Mobile phase. [Psi] (methanol. water) = 40.60, by membrane filtration, and degassing; Flow rate. 0.8mL/min; Column temperature. room temperature (temperature change should be less than 2 deg.] C); Detection wavelength. 260nm; Injection Volume. 5μL; Retention time. imidacloprid about 6.0min. Are typical operating parameters of the above, according to the characteristics of different instruments, for a given operating parameters appropriately adjusted to obtain the best result. A typical aqueous dispersion of 70% by HPLC Imidacloprid granules Figure 1 in FIG. 1 --- imidacloprid. FIG. 170% imidacloprid water dispersible granules by HPLC FIG. 4.4.5 Determination Step 4.4.5.1 Preparation of standard solution 0.1 g of weighed (accurate to 0.0002g) imidacloprid in Sample 100mL volumetric flask, diluted with methanol to the mark, the ultrasonic oscillation 5min to dissolve the sample, cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, dilute with the mobile phase Release to the mark. 4.4.5.2 Preparation of sample solution Containing 0.1 g of imidacloprid was weighed (accurate to 0.0002g) sample in 100mL volumetric flask, diluted with methanol to the mark, the ultrasonic vibrator 5min swing dissolve the sample cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, with the mobile phase Diluted to the mark. 4.4.5.3 Determination Under the above operating conditions, after the instrument is stable, the number of consecutive doses of the standard solution is injected until the two adjacent pins relative change in peak area imidacloprid After less than 1.2%, measured according to the standard solution, sample solution, the sample solution, the order of standard solution. 4.4.5.4 computing The two needle and the sample solution was measured before and after the two doses of the standard sample solution and peak areas were averaged imidacloprid. Imidacloprid sample Mass fraction by formula (1). w1 = A2 · M1 · w A1 · m2 (1) Where. --- the imidacloprid sample mass W1 fraction; A2 --- sample solution, imidacloprid average peak area; M1 --- imidacloprid standard mass in grams (G); W --- the mass fraction of the standard imidacloprid; A1 --- the standard solution, the average peak area imidacloprid; --- M2 sample mass, in grams (g). 4.4.6 allows poor The difference between the results of two replicates imidacloprid content should not exceed 1.0%, and the arithmetic mean value as a measurement result. 4.5 Determination of Moisture According to GB/T 1600 in the "azeotropic distillation method". 4.6 pH value measured Carried out in GB/T 1601. 4.7 Determination of the suspension rate Proceed as GB/T 14825-2006 4.1. Weigh 0.1g of the imidacloprid-containing sample (accurate to 0.0002g), the remaining 1/10 suspensions and the precipitate was transferred to a 100mL volumetric flask, 3 times with methanol 60mL 25mL residue was washed into all 100mL volumetric flask, and shaken at ultrasonic 5min, cooled to room temperature, the volume, shake, filtered, measured by mass 4.4 imidacloprid, namely Operators suspended rate. 4.8 Determination of wetting time Carried out in GB/T 5451. 4.9 Determination of fineness According to GB/T 16150 in the "wet sieve method". Determination of particle size 4.10 4.10.1 Instruments Standard sieve. aperture (100 m); Sieve Shaker. amplitude of 25mm, 1400 times/min. 4.10.2 measuring step Sample accurately weighed 100g water dispersible granules (accurate to 0.1 g of), placed on a 100μm Standard Sieve, stamped seal, shock promoter sieve shaker Swing 5min, collecting sieve was weighed (to the nearest 0.1g). 4.10.3 computing The particle size of the sample according to the formula (2). w2 = m1m × 100 (2) Where. --- size w2 of the sample, expressed in%; the mass m1 --- 100μm sieve material in grams (G); --- m sample mass, in grams (g). Determination dispersible 4.11 4.11.1 Method summary The amount of water in water dispersible granules was added under stirring and mixing to prepare a suspension, after standing for some time, removing a top 9/10 Suspension, suspension and 1/10 bottom drying the precipitate was measured gravimetrically. 4.11.2 reagents and equipment Standard hard water. ρ (Ca2 Mg2) = 342mg/L, pH = 6.0 ~ 7.0, according to GB/T 14825 formulation; Beaker. 1000mL, inner diameter (102 ± 2) mm; Electric mixer. with speed control (0 ~ 1000) r/min; Stainless steel stirring rod (see FIG. 2). with 4 fixed propeller stirring blade stirring bar, the angle between the blades is 45 °; A rotary vacuum evaporator; Stopwatch. In millimeters FIG 2 stainless stirring rod 4.11.3 measuring step At 20 ℃ ± 1 ℃, standard hard water was added to the 900mL beaker, stir bar is fixed in the center of the beaker, stirring the beaker from the blade bar Bottom 15mm, and a stirring blade pitch rotation direction advancing the rod to ensure that the liquid swirls up stir bar, a speed of 300r/min stirring opening Stirrer, the sample 9g water dispersible granules (to the nearest 0.1g) was stirred in water was added, stirring was continued for 1min. Close stirring, so that hydrostatic suspension Home 1min, 9/10 withdrawn suspension (810mL), the entire operation should be completed within 30s ~ 60s, slender glass tube and held always tip In the subsurface, and the suspension is possible without stirring, 90mL of water was distilled off remaining suspension using a rotary vacuum evaporator at 60 ℃ ~ 70 ℃ Dried to constant weight, weighed (to the nearest 0.1g). 4.11.4 computing Dispersion of the sample according to equation (3) is calculated. w3 = 10 (M-m1) 9m × 100 (3) Where. W3 --- dispersibility of the sample, expressed in%; m --- the mass of the sample taken, in grams (G); After mass M1 --- dried residue, in grams (g). 4.12 Persistent foaming test 4.12.1 Method summary A predetermined amount of sample is mixed with standard hard water, the foam volume recorded on standing. 4.12.2 Reagent Standard hard water. ρ (Ca2 Mg2) = 342mg/L, pH = 6.0 ~ 7.0, according to GB/T 14825 formulated. 4.12.3 Instruments and Appliances Stoppered graduated cylinder. 250mL (division value 2mL, 0 ~ 250mL tick 20cm ~ 21.5cm, 250mL scale line to the bottom of the stopper 4cm ~ 6cm); Industrial balance. a sense of the amount of 0.1g. 4.12.4 measuring step Was added 180mL graduated cylinder standard hard water, 1.0g sample was weighed into a measuring cylinder (to the nearest 0.1 g of), was added to the standard hard water from the cylinder 9cm scale line of the bottom plug, the plug cover to the bottom of the cylinder as the center, upside down 30 times (2s). Standing on the bench 1min, foam volume recorded. 4.13 Thermal storage stability test According to GB/T 19136 of "powder formulation" performed. After the heat storage mass fraction of imidacloprid to be not less than 97% before storage, the suspension was still conform Standards compliance. 4.14 product inspection and acceptance Shall comply with the provisions of GB/T 1604's. 5 marking, labeling, packaging, storage, security and guarantee period 5.1 marking, labeling, packaging 70% water dispersible granule application imidacloprid plastic or aluminum composite aluminum bag, net weight typically 50g, 100g. also may According to user requirements or ordering agreement, other forms of packaging, subject to the provisions of GB 3796. 5.2 Storage 70% of the water dispersible granules imidacloprid package airiness, dry place. Storage and transportation to prevent moisture and sun, not with food Thereof, seed, feedstuff, avoid contact with the skin, eyes, mouth and nose to prevent inhalation. 5.3 Security This formulation is low toxicity. It can penetrate through the skin. When using this product to avoid contact with the skin, application after application with soap and rinse with water. Poisoning should immediately sent to hospital for symptomatic treatment. 5.4 Warranty Period Storage conditions at a predetermined, water dispersible to ensure that 70% of Imidacloprid granules, from two years from the production date.

Appendix A

(Informative) Other names imidacloprid, structural formulas and physicochemical parameters of the basic Other names, structural formulas and physicochemical parameters of the product basic active ingredient imidacloprid is as follows. ISO common name. Imidacloprid CAS Registry Number. 138261-41-3 CIPAC Numeric Code. 582 Chemical name. 1- (6-chloro-3-pyridylmethyl) -N- nitromethylene-imidazol-2-yl-amine Structure. Empirical formula. C9H10ClN5O2 Molecular weight. 255.7 Biological activity. insecticide Melting point. 144 ℃ Vapor pressure (20 ℃). 4 × 10-7mPa Solubility (20 ℃, g/L). 0.61 water, 0.68 of toluene, 55 dichloromethane, 1.2 isopropanol, n-hexane is less than 0.1 Stability follows. pH of 5 to 11 stable, hard to be hydrolyzed. 1102-

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