GB 23548-2009 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 23548-2009: [GB/T 23548-2009] Thifensulfuron-methyl wettable powders Status: Valid
Basic dataStandard ID: GB 23548-2009 (GB23548-2009)Description (Translated English): [GB/T 23548-2009] Thifensulfuron-methyl wettable powders Sector / Industry: National Standard Classification of Chinese Standard: G25 Classification of International Standard: 65.100.20 Word Count Estimation: 10,180 Date of Issue: 2009-04-27 Date of Implementation: 2009-11-01 Regulation (derived from): Announcement of Newly Approved National Standards No. 5, 2009 (No. 145 overall) 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 WP thifensulfuron requirements, test methods and marking, labeling, packaging and storage. This standard applies to Thifensulfuron original drug with a suitable additives and fillers processed into Thifensulfuron WP. GB 23548-2009: [GB/T 23548-2009] Thifensulfuron-methyl wettable powders---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Thifensulfuron-methyl wettable powders ICS 65.100.20 G25 National Standards of People's Republic of China Thifensulfuron WP Posted 2009-04-27 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard Chapters 3 and 5 are mandatory, the rest are recommended. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee on Pesticides (SAC/TC133) centralized. This standard is drafted by. the Ministry of Agriculture. Participated in the drafting of this standard. Anhui Fengle Agrochemical Co., Ltd., Jiangsu hormone Institute Co., Ltd. Jiangsu Rui Bangnong pharmaceutical companies. The main drafters of this standard. Wu Jinlong, Chen Tiechun, Yu Rong, violin, Wang Guiying, Fan Lei, step Cummins. Thifensulfuron WP Other active ingredients of the product name, structural formula and basic physicochemical parameters thifensulfuron follows. ISO common name. thifensulfuron-methyl CIPAC digital code. 452 CA registration number. 79277-27-3 Chemical Name. 3- (4-methoxy-6-methyl-1,3,5-triazin-2-yl) -1- (2-methoxy-formyl thiophen-3-yl) - sulfonyl urea Structure. Empirical formula. C12H13N5O6S2 Molecular Weight. 387.4 (according to 2005 international relative atomic mass) Biological activity. weeding Melting point. 176 ℃ (TC 171 ℃) Vapor pressure (25 ℃). 1.7 × 10-8Pa Solubility (g/L, 25 ℃). water 0.223 (pH5), 2.240 (pH7), 8.830 (pH9); n-hexane < 0.1, o-xylene, 0.212, 3.3 ethyl acetate, methanol, 2.8, 7.7 acetonitrile, acetone, 10.3, 23.8 dichloromethane Stability. neutral, weakly alkaline aqueous solution is stable, acidic hydrolysis in aqueous solution at accelerated DT504-6d (pH5)1 ScopeThis standard specifies thifensulfuron WP requirements, test methods and marking, labeling, packaging and storage. This standard applies to processed from thifensulfuron original drug with suitable additives and fillers into thifensulfuron WP.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1600 Determination of Water Pesticides GB/T 1601 Pesticides pH value measurement method GB/T 1604 Goods pesticide regulations for acceptance GB/T 1605-2001 Sampling Method commercial pesticides GB 3796 pesticide packaging General GB/T 5451 WP Pesticide wettability measurement method GB/T 14825-2006 Method for determination of pesticide wettable powder suspension GB/T 16150 pesticide powder, wettable powder fineness measurement method GB/T 19136 Determination of Pesticide Thermal storage stability3 Requirements3.1 Composition and appearance This product should be compliant thifensulfuron original drug with suitable additives and fillers processed into, loose powder should be uniform, there should be no lumps. 3.2 Technical Specifications Thifensulfuron WP should meet the requirements of Table 1. Table 1 thifensulfuron WP Control Project Index Item Index Thifensulfuron mass fraction /% 25.0 + 15.0 + 0.9-0.9 1.5-1.5 Thifensulfuron suspension rate /% ≥ 75 pH range of 6.0 to 9.0 Moisture /% ≤ 3.0 Wetting time/s ≤ 120 Fineness (through 45μm test sieve) /% ≥ 98 Thermal storage stability of a qualified a thermal storage stability test, test at least once every 3 months. Test Method 4 4.1 Sampling Carried out according to GB/T 1605-2001 "solid preparation sampling" method. Random sampling to determine the sampling methods package, the final sample The amount of not less than 300g. 4.2 Identification Test HPLC --- The identification test with thifensulfuron determination simultaneously. Under the same chromatographic operating conditions, the test One sample solution peak retention time compared with standard sample solution thifensulfuron chromatographic retention time, the relative difference should be 1.5% Fewer. When using the above method for identification of effective ingredients have questions, other effective methods can be used for identification. 4.3 thifensulfuron mass fraction determination 4.3.1 Method summary Sample was dissolved in acetonitrile, methanol + water as the mobile phase, use as filler to C18 stainless steel column and UV detector (250nm), to External standard method in a sample thifensulfuron reverse phase HPLC separation and determination. 4.3.2 Reagents and solutions Methanol. HPLC grade; Acetonitrile. HPLC grade; Phosphoric acid. AR; Water. The new secondary steam distilled water; Thifensulfuron standard. a known mass fraction ≥98.0%. 4.3.3 Instruments High performance liquid chromatography. a variable wavelength UV detector; Chromatographic data processor or chromatography workstation; Column. 250mm × 4.6mm (. I.d) stainless steel column, built ZORBAXSB-C18,5μm filler (or other equivalent effect Column); Filter. filter pore size of about 0.45μm; Micro injector. 50μL; Quantitative sample line. 5μL; Ultrasonic cleaner. 4.3.4 HPLC operating conditions Mobile phase. [Phi] (methanol. water) = 65.35 adjusted with phosphoric acid where water pH = 3, filtered through a filter membrane and degassed; The mobile phase flow rate. 1.0mL/min; Column temperature. 30 ℃; Detection wavelength. 250nm; Injection volume. 5.0μL; Retention time. thifensulfuron about 4.0min. It said operating parameters are typical, according to the characteristics of different instruments and columns for a given operating parameters adjusted as appropriate, in order to obtain the most Good effect. Typical thifensulfuron WP HPLC is shown in Figure 1. 1 --- thifensulfuron. Figure 1 thifensulfuron WP HPLC chromatogram 4.3.5 measuring step 4.3.5.1 Sample solution preparation Weigh thifensulfuron standard 0.05g (accurate to 0.0002g), placed in 100mL volumetric flask, dissolved in acetonitrile and diluted to the mark, Shake well. 4.3.5.2 Sample solution preparation Weigh containing thifensulfuron 0.05g sample (accurate to 0.0002g), placed in 100mL volumetric flask, dissolved in acetonitrile and diluted to Mark and shake. By membrane filtration and set aside. 4.3.5.3 Determination Under these operating conditions, after the instrument is stable, continuous injection of several doses of the standard solution until the two adjacent needles thifensulfuron peak area becomes relatively After of less than 1.5%, according to the solution, sample solution, sample solution, standard order of standard solution was measured. 4.3.6 Calculation The two doses of the standard solution of two injections of the sample solution and measured before and after the sample solution thifensulfuron peak areas are averaged. Specimen Thifensulfuron mass fraction of 1 (%) according to equation (1). (1) Where. A1 --- around two doses of the standard average of thiophene metsulfuron peak area of thiophene solution; Thiophene metsulfuron mean peak area of two needles in the sample solution thiophene A2 --- front and rear; --- Standard samples thifensulfuron mass fraction, expressed as a percentage. 4.3.7 allowable difference The difference between two parallel determination results shall not be greater than 0.5%, the arithmetic mean value as a measurement result. 4.4 Determination of the suspension rate 4.4.1 measuring step According to GB/T 14825-2006 Method in a conducted. Said sample of about 1.0g (accurate to 0.0002g), will stay with 70mL acetonitrile 1/10 suspensions and the residue at the bottom of the cylinder is transferred to 100mL volumetric flask, thoroughly shaken, acetonitrile sonication, set the volume. press 4.3.5 Determination thifensulfuron quality, calculate the suspension rate. 4.4.2 allowable difference The difference between two parallel determination results shall not be greater than 5% of the arithmetic mean as a measurement result. 4.5 Determination of Moisture According to GB/T 1600 "on azeotropic distillation method". According to GB/T 1601 carried out. 4.7 Determination of wetting time According to GB/T 5451 carried out. 4.8 Determination of fineness According to GB/T 16150 in the "wet sieve method". 4.9 Thermal storage stability test 19136 by method GB/T "powder formulation" will be completed testing thifensulfuron mass fraction and suspension rates within 24h after the heat storage set. Thifensulfuron content should not be less than the reservoir before the mass fraction of 95% suspension rate should meet the standard requirements. 4.10 Product inspection and acceptance Shall comply with GB/T 1604's. Treatment of extreme values using the rounding value comparison method. 5 marking, labeling, packaging, storage and transportation 5.1 thifensulfuron WP signs, labeling and packaging should comply with the relevant provisions of GB 3796. 5.2 thifensulfuron wettable powder with plastic composite bag, bag net capacity of 50g, external carton for packaging, each box of net content not exceeding Over 10kg. According to customer requirements or orders protocol, using other forms of packaging, but to comply with the relevant provisions of GB 3796. 5.3 The package should be stored in ventilated, dry coffers. 5.4 storage, prevent moisture and sunlight, no food, seed, feed mix, avoid contact with skin, eyes, mouth and nose to prevent inhalation. 5.5 Security. using the instructions on the package or container, in addition to eye-catching signs of toxicity, it should also toxic instructions, use precautions, in Symptom of detoxification methods and first aid measures. 5.6 Warranty. under the specified storage conditions, quality of thifensulfuron WP warranty period, counting from the date of manufacture 2 years. ...... |
