GB 23551-2009 English PDF

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GB 23551-2009: [GB/T 23551-2009] Clomazone emulsifiable concentrates
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 23551-2009	319	Add to Cart	3 days	[GB/T 23551-2009] Clomazone emulsifiable concentrates	Valid

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Basic data

Standard ID: GB 23551-2009 (GB23551-2009)
Description (Translated English): [GB/T 23551-2009] Clomazone emulsifiable concentrates
Sector / Industry: National Standard
Classification of Chinese Standard: G25
Classification of International Standard: 65.100.20
Word Count Estimation: 12,128
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 clomazone EC requirements, test methods and marking, labeling, packaging, storage and transportation. This standard applies to Clomazone Matsubara drugs and emulsifier dissolved in a suitable solvent mixture of the clomazone EC.

GB 23551-2009: [GB/T 23551-2009] Clomazone emulsifiable concentrates

---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.
Clomazone emulsificable concentrates ICS 65.100.20 G25 National Standards of People's Republic of China EC loose grass 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

Foreword

The standard Chapter 3, Chapter 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. Shenyang Chemical Research Institute. Participated in the drafting of this standard. Jiangsu Changqing Agrochemical Co., Ltd., Jiangsu dragon Chemical Co., Ltd., Dalian Songliao Chemical Co. the company. The main drafters of this standard. Hou Chunqing, Zan Yan Kun, Jerry Hong, of cloud point, Miao innovation. EC loose grass Other name, structural formula and basic physicochemical parameters of the active ingredients of the product are as follows. a) Yi Cao Song ISO common name. clomazone CIPAC Numeric Code. 509 Chemical name. 2- (2-chlorobenzyl) -4,4-dimethyl-3-isobutyl ketone Structure. Empirical formula. C12H14ClNO2 Molecular Weight. 239.7 (according to 2005 international relative atomic mass) Biological activity. weeding Vapor pressure (25 ℃). 19.2mPa Boiling point. 275.4 ℃ Melting point. 25 ℃ Solubility (20 ℃). water 1.1g/L, soluble in acetone, acetonitrile, chloroform, cyclohexanone, methylene chloride, methanol, toluene, n-hexane, di Dimethylformamide Stability. stable for at least 2 years at room temperature at 50 ℃ stable for at least 3 months, the sunlight, the aqueous solution is greater than 30d DT50 b) Azone English name. Azone Chemical Name. 1-n-dodecylazacycloheptan-2-one Structure. Empirical formula. C18H35NO Molecular weight. 281.48 (according to 2001 international relative atomic mass) Solubility. easily soluble in ethanol, acetone, hexane, chloroform, diethyl ether; practically insoluble in water

1 Scope

This standard specifies the different Grass pine EC requirements, test methods and marking, labeling, packaging, storage and transportation. This standard applies to the different Grass Matsubara drugs and preparation of the emulsifier is dissolved in a suitable solvent iso EC loose grass.

2 Normative references

The 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 1603 Determination of emulsion stability of pesticide GB/T 1604 Goods pesticide regulations for acceptance GB/T 1605-2001 Sampling Method commercial pesticides Determination of GB/T 4472 chemical product density, relative density GB 4838 EC pesticide packaging GB/T 19136 Determination of Pesticide Thermal storage stability GB/T 19137 Pesticide cryogenic stability Determination

3 Requirements

3.1 Composition and appearance This product should meet the standards of different Grass Matsubara drugs made of a stable homogeneous liquid, free from visible suspended matter and sediment. 3.2 Technical Specifications Grass pine EC should be consistent with Table 1 requirements. Table 1 Song Yi Cao EC Control Project Index project index 480g/L 360g/L Grass loose concentration (20 ℃) / (g/L) Or mass fraction of a /% + 24-24 480 45.0 + 2.2-2.2 + 18-18 360 35.0 + 1.7-1.7 Penetrant (Azone) mass fraction b /% ≥ - 2.0 Penetration time/s ≤ - 150 Moisture /% ≤ 0.5 pH range of 5.0 to 8.0 Emulsion stability (diluted 200 times) Qualified Low temperature stability Qualified c Thermal storage stability c qualified When a dispute occurs when mass to the mass fraction of arbitration. b allow additional penetrant, penetrant other detection methods and its corresponding index requirements in the National Standardization Technical Committee Pesticide obtained. Thermal storage stability test when c normal production, low-temperature stability measured at least once every three months. Test Method 4 4.1 Sampling According to GB/T 1605-2001 in "liquid formulations sampling" approach. Determined by sampling a random number table method packages, the final sample size Not less than 200mL. 4.2 Identification Test --- The High Performance Liquid Chromatography with different identification test Determination of the mass fraction of loose grass simultaneously. In the same chromatographic operating conditions , The retention time of the standard solution and the sample solution to a chromatographic peaks iso Grass pine peak retention time, the relative difference should be 1.5% Fewer. 4.3 Determination of the mass concentration of pine and grass (mass fraction) 4.3.1 Method summary Sample was dissolved in methanol, acetonitrile + water as the mobile phase, to use as filler AgilentTC-C18 stainless steel column and UV detector 236nm wavelength, the sample of the different grass pine reverse phase HPLC separation and determination of external standard. 4.3.2 Reagents and solutions Methanol. HPLC grade; Acetonitrile. HPLC grade; Water. The new secondary steam distilled water; Grass Song Sample. 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 AgilentTC-C18,5μm filler (or with equivalent effect color The 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. φ (acetonitrile. water) = 50.50, by membrane filtration, and degassing; Flow rate. 1.0mL/min; Column temperature. room temperature (temperature change should not exceed 2 ℃); Detection wavelength. 236nm; Injection volume. 5μL; Retention time. iso Grass pine 11.0min. It said operating parameters are typical, according to the characteristics of different instruments, given operating parameters adjusted as appropriate, in order to obtain the best results. Typical differences EC loose grass HPLC is shown in Figure 1. 1 --- Yi Cao loose.

1 Yi Cao Song EC HPLC diagram

4.3.5 measuring step 4.3.5.1 Preparation of standard solution Weigh 0.2g (accurate to 0.0002g) and grass loose standard in 50mL volumetric flask, dissolved in methanol and diluted to the mark. Using a pipette to take the above solution 10mL in 50mL volumetric flask, diluted with methanol to the mark. 4.3.5.2 Preparation of sample solution Weigh Iso Grass pine 0.2g (accurate to 0.0002g) sample in 50mL volumetric flask, dissolved in methanol and diluted to the mark, shake uniform. Using a pipette to take the above solution 10mL in 50mL volumetric flask, diluted with methanol to the mark. 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 iso Peak area becomes relatively loose grass After less than 1.2% of the solution in accordance with the sample solution, the sample solution and standard sequence of the standard solution was measured. 4.3.6 Calculation The measured before and after the two-needle sample solution and sample two different doses of the standard solution Grass Pine Peak area were averaged. Sample different Grass loose mass fraction of 1 (%) according to equation (1) calculation; (2) to calculate the concentration of ρ1 (g/L) by the formula. 1 = A2 (1) ρ1 = 10 (2) Where. A1 --- the average standard solution and grass Pine Peak area; A2 --- sample solution and grass Pine mean peak area; Density ρ --- 20 ℃ when the sample in grams per milliliter (g/mL) (according to GB/T 4472 measured); --- Yi Cao Song Sample mass fraction, expressed as a percentage. 4.3.7 allowable difference The measurement results grass loose mass fraction of the difference between the two parallel should not exceed 0.8%, and the arithmetic mean as a measurement result. 4.4 Determination of the mass fraction of nitrogen-one 4.4.1 Method summary Sample was dissolved in acetonitrile to acetonitrile + water as the mobile phase, to use as filler HypersilGOLDC18 stainless steel column and UV detection It is, at a wavelength of 210nm on the sample under nitrogen ketone HPLC separation and determination, external standard. 4.4.2 Reagents and solutions Acetonitrile. chromatographic pure; Water. freshly distilled twice-distilled water by membrane filtration; Azone standard. a known mass fraction ≥99.0%. 4.4.3 Instruments High performance liquid chromatography. a variable wavelength UV detector; Chromatography data workstations; Column. 150mm × 4.6mm (i.d.) Stainless steel column. The filler is HypersilGOLDC18, particle diameter of 5 m; Micro injector. 50μL; Filter. filter pore size of 0.45μm. 4.4.4 HPLC operating conditions Mobile phase. φ (acetonitrile. water) = 90.10, by membrane filtration, and degassing; Flow rate. 1.0mL/min; Column temperature. room temperature; Detection wavelength. 210nm; Injection volume. 10μL; Retention time. Azone 6.2min. Above are typical operating parameters can be given operating parameters adjusted as appropriate depending on the characteristics of the instrument, in order to obtain the best results. Texts Type of 360g/L EC in pine and grass Azone HPLC is shown in Figure 2. 1 --- azone. Figure 2 Yi Cao Song EC Azone determined by high performance liquid chromatogram 4.4.5 measuring step 4.4.5.1 preparation of standard solution Weigh Azone standard 0.02g (accurate to 0.0002g), placed in 100mL flask, add acetonitrile dissolved and diluted to the mark with the mobile phase Degree, shake. 4.4.5.2 preparation of the sample solution Weigh the sample 1g (accurate to 0.0002g), placed in 100mL flask, add acetonitrile dissolved in mobile phase and dilute to the mark. 4.4.5.3 Determination Under these operating conditions, the instrument until a stable baseline, the number of continuous injection doses of the standard solution, calculate the response of the needle, two needles to be adjacent ring Relative change value should be less than 1.0%, according to the solution, the sample solution, the sample solution and standard sequence of the standard solution was measured. 4.4.6 Calculation The peak area was measured before and after the two-needle sample solution and two doses of the standard sample solution Azone are averaged for sample quality Azone 2 volume fraction (%), according to equation (3) Calculated. 2 = A2 (3) Where. A1 --- Azone mean standard peak area; The average value A2 --- sample Azone peak area; --- Azone standard mass fraction, expressed as a percentage. 4.4.7 allowable difference Results of two parallel determination of nitrogen content of ketone relative deviation should not exceed 10% of the arithmetic mean value as a measurement result. 4.5 Determination of the penetration time 4.5.1 Instruments Beaker.200mL; Pipette. 2mL; Straight cylinder. 100mL; Thermometer. 0 ℃ ~ 100 ℃; Constant temperature water bath. 25 ℃ ± 2 ℃; Cotton cloth. 21 × 21 3 shares 3 shares fine canvas, wafers having a diameter of 30.0mm spare. 4.5.2 measuring step With pipette sample 0.4mL, the sample was slowly dropped into a beaker filled with distilled water of 200mL, stir gently with a glass rod. The beaker was placed in a water bath to keep the temperature of the solution in the beaker at 25 ℃ ± 2 ℃. Beaker until the solution surface of the foam disappears and canvas circle Sheet placed on the rear surface of the solution, use a stopwatch, canvas discs until settle to the bottom of the beaker, records from flat to settle to the bottom of the canvas used Time (in seconds). Repeat the test more than 10 times, and the arithmetic mean of the difference between the 20s and the average of the above data rounding, and then averaged Value, that is, penetration time. 4.5.3 Calculation (4) Where. --- Like the number of measurement samples. 4.6 Determination of Moisture According to GB/T 1600 the "Karl Fischer method". According to GB/T 1601 carried out. 4.8 Emulsion stability test Standard hard water sample was diluted 200-fold, according to GB/T 1603 test, the non-oil slick, no precipitation under qualified. 4.9 Low temperature stability test According to GB/T 19137 in "homogeneous emulsion and liquid preparations", in the bottom of the centrifuge tube educt volume does not exceed 0.3mL qualified. 4.10 Thermal storage stability test According to GB/T 19136 in "liquid formulation" to. After the heat storage and grass pine content shall not be less than 97% before the heat storage, emulsion stability should Meet the requirements of this standard is qualified. 4.11 Product inspection and acceptance Shall comply with GB/T 1604's. Limit the use of numerical treatment rounding value comparison method. 5 marking, labeling, packaging, storage and transportation 5.1 Yi Cao Song EC marking, labeling and packaging should comply with the provisions of GB 4838. Song Yi Cao EC 5.2 Application of glass or plastic PET bottle packaging, bottle net content of 500g or 1000g; each box weighing 10kg, or 12kg. Also available upon request or order agreement other forms of packaging, subject to the provisions of GB 4838. 5.3 Yi Cao Song EC packages should be stored in well-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. This product is a low-toxic pesticides. Are swallowed and inhaled toxic, it can penetrate through the skin. Wear protective goggles and rubber gloves when using this product Wear the necessary protective clothing. After spraying wash with soap and water. Coverage should be immediately sent to hospital symptomatic treatment. 5.6 Warranty. under specified conditions of storage, Yi Cao Song EC guarantee period, from date of manufacture for 2 years. ......

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