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GB 28126-2011 English PDF

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GB 28126-2011: [GB/T 28126-2011] Imidacloprid technical material
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GB 28126-2011English259 Add to Cart 3 days [Need to translate] [GB/T 28126-2011] Imidacloprid technical material Valid GB 28126-2011

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Standard similar to GB 28126-2011

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Basic data

Standard ID GB 28126-2011 (GB28126-2011)
Description (Translated English) [GB/T 28126-2011] Imidacloprid technical material
Sector / Industry National Standard
Classification of Chinese Standard G25
Classification of International Standard 65.100.10
Word Count Estimation 10,150
Date of Issue 2011-12-30
Date of Implementation 2012-04-15
Quoted Standard GB/T 1601; GB/T 1604; GB/T 1605-2001; GB 3796
Adopted Standard FAO specification 582/TC-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 requirements imidacloprid, test methods and marking, labeling, packaging, storage and acceptance period. This standard applies to imidacloprid and its impurities generated in the production of imidacloprid.

GB 28126-2011: [GB/T 28126-2011] Imidacloprid technical material

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Imidacloprid technical material ICS 65.100.10 G25 National Standards of People's Republic of China Imidacloprid 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 FAOspecification582/TC (May2006) "imidacloprid" The main technical differences and the reasons are as follows. --- This increases the control over the standard loss on drying, pH value range, dimethylformamide insolubles, more comprehensive index item, the FAO Specifications not control these three indicators. Please note that some of the content of this document may involve patents. The issuing authority of this document does not assume responsibility to identify these patents. The standard proposed by China Petroleum and Chemical Industry Association. 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. Jiangsu Changqing Agrochemical Co., Ltd., Nanjing Red Sun Co., Ltd., Zhejiang Hisun Chemical Co. Co., Ltd., Jiangsu Suke Sheng Group Co., Ltd., Qingdao Hailier Pharmaceutical Co., Ltd. The main drafters. Hou Chunqing, Zan Yan Kun, Lvliang Zhong, Liu Kuitao, Wang Tiansheng, WANG Chun-ling, Jerry incense, Li Xuechen. Imidacloprid

1 Scope

This standard specifies the requirements, test methods and marking, labeling, packaging, storage and acceptance of imidacloprid the original drug. This standard applies to imidacloprid and imidacloprid impurities generated in the production thereof. 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. 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 3.1 Appearance White to beige powder, without visible foreign matter. 3.2 Technical Specifications Imidacloprid should also meet the requirements of Table 1. Table 1 imidacloprid Control Project Index Item Index Imidacloprid content /% ≥ 97.0 Loss on drying /% ≤ 0.5 The pH range of 5.0 to 8.0 Dimethylformamide insolubles mass fraction a /% ≤ 0.2 When a normal production, dimethylformamide insolubles content was measured at least once every three months. Test Method 4 4.1 Sampling Carried out in GB/T 1605-2001 of "original drug product sampling" approach. Determining Sample packages with a random number table method; final sample size Not less than 100g. 4.2 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 Main peaks in the retention time of the sample solution and the standard solution imidacloprid retention time of the peaks, the relative difference should be less than 1.5%. Infrared spectroscopy --- imidacloprid standard sample and the infrared 4000cm -1 ~ 400cm-1 absorption spectrum range should not significantly the difference. Imidacloprid standard infrared spectra of Figure 1. FIG 1 imidacloprid standard IR spectrum 4.3 Determination of the content of Imidacloprid 4.3.1 Method summary Sample dissolved in mobile phase, methanol and water as mobile phase, used as a filler C18 stainless steel column and UV detector wavelength At 260nm, of the sample imidacloprid RP-HPLC separation and determination, external standard. 4.3.2 Reagents and solutions Methanol. HPLC grade; Water. The new secondary steam distilled water; Imidacloprid Sample. A known mass fraction w≥99.0%. 4.3.3 Instruments HPLC. a variable wavelength UV detector; Chromatographic data processor or chromatography workstation; Column. 250mm × 4.6mm (id) stainless steel column, the contents C18,5μm filler; Filter. membrane pore size of about 0.45 m; Microsyringe. 50μL; Quantitative sampling tube. 5μL; Ultrasonic cleaning. 4.3.4 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 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. Typical HPLC imidacloprid shown in Figure 2. 1 --- imidacloprid. FIG 2 FIG imidacloprid original drug HPLC 4.3.5 Determination Step 4.3.5.1 Preparation of standard solution 0.1 g of weighed (accurate to 0.0002g) imidacloprid in Sample 100mL volumetric flask, dissolved in methanol and diluted to the mark, ultrasonic 5min shaken to dissolve the sample, cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, with the mobile Phase was diluted to the mark. 4.3.5.2 Preparation of sample solution Containing 0.1 g of imidacloprid was weighed (accurate to 0.0002g) sample in 100mL volumetric flask, dissolved in methanol and diluted to the mark, ultra 5min sonication to dissolve the sample, cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, with Mobile phase and dilute to the mark. 4.3.5.3 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. 4.3.5.4 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. W1 --- imidacloprid sample mass fraction in%; A2 --- sample solution, imidacloprid average peak area; M1 --- imidacloprid standard mass in grams (G); W --- the mass fraction of imidacloprid standard sample, expressed in%; A1 --- the standard solution, the average peak area imidacloprid; --- M2 sample mass, in grams (g). 4.3.6 allows poor The difference between the results of two replicates imidacloprid content should not exceed 1.2%, and the arithmetic mean value as a measurement result. Determination of loss on drying 4.4 mass fraction 4.4.1 Instruments and Appliances Weighing bottle. diameter 50mm, height 20mm; Oven. 105 ℃ ± 2 ℃; Dryer. 4.4.2 Determination Step The weighing bottle placed in an oven bake IH, then cooled to room temperature in a desiccator, weighed (accurate to 0.0002g). Repeating the above steps Step, until a constant weight weighing bottle. 10g weighed into a weighing bottle in a sample, paving weighed (accurate to 0.0002g). The weighing bottle back into the oven Me, IH bake uncovered, capped, removed and placed in a desiccator was cooled to room temperature, weigh (accurate to 0.0002g). Repeating the above operation, Weighing bottle and the sample until a constant weight. 4.4.3 computing Drying loss mass fraction in a sample according to the formula (2). w2 = m1-m2m × 100 (2) Where. --- drying loss mass fraction w2 of the sample, expressed in%; M1 --- sample mass before drying and weighing bottles in grams (G); --- M2 sample mass after drying and weighing bottles in grams (G); --- m sample mass, in grams (g). 4.4.4 allows poor The measurement results of the two parallel relative deviation should not exceed 30%, and the arithmetic mean value as a measurement result. 4.5 pH value measured Carried out in GB/T 1601. Determination of insoluble material content of the amide methyl two 4.6 4.6.1 Reagents dimethylformamide. 4.6.2 Instruments Erlenmeyer flasks. glass with ground joints, 250mL; Sand core glass crucible. G3; Oven. 110 ℃ ± 2 ℃. 4.6.3 Determination Step Sample Weigh 10g (accurate to 0.01g), placed in 250mL Erlenmeyer flask, 60mL of dimethylformamide was added, shaken to all Solution was taken, filtered through a crucible constant weight solution, and then dimethylformamide 60mL conical flask was washed three times, and suction filtered. The crucible set Dried in an oven 30min, then cooled to room temperature and weighed. Dimethylformamide insolubles fraction of mass (3) is calculated according to the formula. w3 = m1-m0m × 100 (3) Where. W3 --- dimethylformamide insolubles content, expressed in%; After constant weight mass M1 --- crucible and the insolubles in grams (G); M0 --- crucible mass in grams (G); --- m sample mass, in grams (g). 4.6.4 allows poor The measurement results of the two parallel relative deviation should not exceed 30%, and the arithmetic mean value as a measurement result. 4.7 product testing and acceptance Product inspection and acceptance shall comply with GB/T 1604's. Process limit values using rounding value comparison method. 5 marking, labeling, packaging, storage, security, acceptance period 5.1 marking, labeling, packaging Flag imidacloprid, labeling and packaging should comply with the provisions of GB 3796. Imidacloprid original medicinal lined iron drum, barrel, net weight Generally 50kg, 100kg or 200kg. Other forms may also be packed according to the requirements of the protocol or order, subject to The provisions of GB 3796. 5.2 Storage Imidacloprid package airiness, dry place. Storage and transportation, to prevent moisture and sunlight, no food, seed, feed Feed mix, to avoid contact with the skin, eyes, mouth and nose to prevent inhalation. 5.3 Security This is a moderately toxic pesticides. Are swallowed and inhaled toxic, it can penetrate through the skin. Wear protective goggles and rubber gloves when using this product Necessary to wear protective clothing. After application with soap and rinse with water. Coverage should be immediately sent to hospital for symptomatic treatment. 5.4 Acceptance of Acceptance of imidacloprid for a month. From the date of delivery, product quality inspection completed within one month, the indicators should be Meet the standards.

Appendix A

(Informative) Other names, formulas and basic physicochemical parameters of imidacloprid 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). water 0.61, 0.68 toluene, methylene chloride 55, 1.2 isopropanol, n-hexane is less than 0.1 Stability follows. pH of 5 to 11 stable, hard to be hydrolyzed.

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