GB 22607-2008 English PDF

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GB 22607-2008: [GB/T 22607-2008] Atrazine wettable powders
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 22607-2008	239	Add to Cart	3 days	[GB/T 22607-2008] Atrazine wettable powders	Valid

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Basic data

Standard ID: GB 22607-2008 (GB22607-2008)
Description (Translated English): [GB/T 22607-2008] Atrazine wettable powders
Sector / Industry: National Standard
Classification of Chinese Standard: G25
Classification of International Standard: 65.100.20
Word Count Estimation: 9,942
Date of Issue: 2008-12-17
Date of Implementation: 2009-06-01
Regulation (derived from): Announcement of Newly Approved National Standards No. 21 of 2008 (No. 134 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 atrazine WP requirements, test methods and marking, labeling, packaging, storage and transportation. This standard applies to the original drug atrazine, suitable additives and fillers processed into atrazine WP.

GB 22607-2008: [GB/T 22607-2008] Atrazine 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.
Atrazine wettable powders ICS 65.100.20 G25 National Standards of People's Republic of China Atrazine WP Posted 2008-12-17 2009-06-01 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 is mandatory, the rest are recommended. Appendix A of this standard is an informative annex. Since the implementation of this standard, the original industry standard HG2217-1991 "WP herbicide atrazine" void. 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. Shandong Weifang Rainbow Chemical Co., Ltd., CNPC Jilin Petrochemical pesticide companies, Qingdao Hailier Pharmaceutical Co., the company. The main drafters of this standard. Wang Yufan, Zhangxue Bing, Liu Yuanjiang, Liu Yi pure, Lixue Chen, Tang Lili, Wang Shiyan. Atrazine WP The product is an active ingredient atrazine other name, structural formula and basic physicochemical parameters are as follows. ISO common name. Atrazine CIPAC Numeric Code. 91 Chemical name. 2-chloro-4-ethylamino-6-isopropylamino-triazine -1-3-5- Structure. Empirical formula. C8H14ClN5 Molecular Weight. 215.7 (according to 2007 international relative atomic mass) Biological activity. weeding Melting point. < 175 ℃ ~ 177 ℃ Vapor pressure (20 ℃). 0.04mPa Solubility (25 ℃). water 30mg/L, chloroform 52g/kg, ether 12g/kg, ethyl acetate 28g/kg, methanol 18g/kg, Octanol 10g/kg Stability. at 70 ℃, neutral medium slow hydrolysis of no herbicidal activity of 6-hydroxy derivative, the water in acidic or alkaline medium Solutions faster. Soil DT5060d ~ 150d

1 Scope

This standard specifies the atrazine wettable powder requirements, test methods and marking, labeling, packaging, storage and transportation. This standard applies to the herbicide atrazine original drug, suitable additives and fillers processed into atrazine wettable powder.

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 Determination of GB/T 1601 Pesticides pH value GB/T 1604 Goods pesticide regulations for acceptance GB/T 1605-2001 Sampling Method commercial pesticides GB 3796 pesticide packaging General GB/T 5451 Determination of pesticide wettable powder wetting GB/T 14825 method for determination of pesticide suspension GB/T 16150 pesticide powder, wettable powder fineness measurement method GB/T 19136 Determination of Pesticide Thermal storage stability

3 Requirements

3.1 Composition and appearance. This product should be compliant atrazine original drug is made, the appearance of a uniform loose powder, there should be no lumps. 3.2 Technical Specifications Atrazine WP should meet the requirements of Table 1. Table 1 Atrazine WP Control Project Index project index 80% 48% Atrazine mass fraction /% 80.0 ± 2.5 48.0 ± 2.5 Moisture content /% ≤ 2.5 Suspension rate /% ≥ 70 Wetting time/s ≤ 120 pH range 6.0 to 10.0 Fineness (through 45μm test sieve) /% ≥ 98 Thermal storage stability of a qualified a thermal storage stability test under normal production conditions, inspection at least once every three months. Test Method 4 4.1 Sampling Carried out according to GB/T 1605-2001 "on the solid sample preparation" method. Determining sample package using a random number table method; final draw Sample size should be less than 200g. 4.2 Identification Test Gas Chromatography --- The identification test can be carried out simultaneously with the determination of atrazine content. Under the same chromatographic operating conditions, the sample solution Liquid retention time of a standard solution of peaks in atrazine retention time peaks, the relative difference should be less than 1.5%. 4.3 Determination of the mass fraction of atrazine 4.3.1 Method summary Sample was dissolved in chloroform to triadimefon as internal standard, the use of the inner wall of the bonded Carbowax 20M capillary column and flame Ionization detector to sample atrazine gas chromatographic separation and determination. You can also use packed column gas chromatography, chromatographic conditions Senate See Appendix A. 4.3.2 Reagents and solutions Chloroform; Triadimefon. ≥95%, should not interfere with the analysis of impurities; Atrazine Sample. Atrazine is known mass fraction ≥99.0%; Internal standard solution. Weigh 6.8g triadimefon, placed 1000mL volumetric flask with chloroform to dissolve and dilute to volume, shake. 4.3.3 Instruments Gas chromatograph. with a hydrogen flame ionization detector; Chromatographic data processor or chromatography workstation; Column. 30m × 0.32mm (i.d.) Double capillary column, wall-bonded polyethylene glycol 20M, film thickness 0.25μm; Micro injector. 10μL. 4.3.4 GC operating conditions Temperature (℃) Temperature. 195 gasification chamber. 230, detection chamber. 230; Gas flow rate (mL/min). carrier gas (high purity nitrogen) 2.0, hydrogen 30, air 300; Injection volume (μL). 1.0; Retention time (min). atrazine about 4.2, internal standard (triadimefon) about 6.0. GC operating conditions described above, the Department of typical operating parameters. According to the characteristics of different instruments, given operating parameters in order to make appropriate adjustments To obtain the best results. Typical atrazine wettable powder and the internal standard gas chromatography is shown in Figure 1. 1 --- atrazine; 2 --- internal standard (triadimefon). GC Figure 1 atrazine wettable powder and the internal standard 4.3.5 measuring step 4.3.5.1 preparation of standard solution Weigh atrazine standard 0.1g (accurate to 0.0002g), was placed in a 25mL stoppered glass bottle with a pipette accurately added 10mL Internal standard solution, and shake. 4.3.5.2 preparation of the sample solution Weigh the sample containing atrazine 0.1g of (accurate to 0.0002g), was placed in a 25mL stoppered glass vial, with the same team and 4.3.5.1 Pipette accurately added internal standard solution 10mL, shake. 4.3.5.3 Determination Under these operating conditions, the instrument until a stable baseline, the number of continuous injection doses of the standard solution, calculated for each needle atrazine and the internal standard peak area The ratio of repeatability, two needles herbicidal Jin and the internal standard peak area ratio of the relative change of less than 1.5%, according to the standard solution, sample solution to be adjacent to Solution, sample solution, the order of the standard solution was measured. 4.3.5.4 Calculation The two needle sample solution and measured before and after the two doses of the standard sample solution of atrazine and the internal standard peak area ratios were averaged. test Samples atrazine mass fraction of 1 (%) according to equation (1). (1) Where. --- Atrazine standard mass fraction, expressed as a percentage. 4.3.6 allowable difference The difference between two parallel determination results, 80% wettable powder should be not more than 1.2%, 48% WP should not exceed 1.0%. 4.4 Water According to GB/T 1600 in the "azeotropic distillation method". 4.5 Determination of the suspension rate It weighs about 0.4g containing the herbicide atrazine sample (accurate to 0.0002g). According to GB/T 14825 performed. The remaining 25mL suspension Precipitate and evaporated to dryness in a water bath, then returned to room temperature by measuring 4.3 atrazine concentration, calculate the suspension rate. 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 According to GB/T 19136 in "powder preparation", in hot storage within 24h 4.3 Determination of atrazine by mass fraction, measured by suspending 4.4 rate. Atrazine content should not be less than 95% of the reservoir before the suspension was still should meet the standard specs. 4.10 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 atrazine wettable powder marking, labeling and packaging should comply with the provisions of GB 3796. 5.2 atrazine wettable powder aluminum foil bag or plastic bag, net weight of 100g, 200g, 250g, 500g; packaging can Cartons, corrugated cardboard box or Plastic boxes each containing a net content not exceeding 20kg. 5.3 can also be ordered according to user requirements or other forms of packaging agreement, but it should comply with the provisions of GB 3796. 5.4 Atrazine WP package should be stored in well-ventilated, dry coffers. 5.5 storage, prevent moisture and sunlight, no food, seed, feed mix, avoid contact with skin, eyes, mouth and nose to prevent inhalation. 5.6 Security. atrazine low toxicity herbicides, are swallowed or inhaled toxic. When used, should wear protective gloves, masks, protective wear and clean clothes. Immediately after use with soap and water. In case of poisoning, should go to hospital for examination and treatment. 5.7 Warranty. under specified conditions of storage, from date of manufacture for 2 years.

Appendix A

(Informative) Atrazine quality gas chromatographic method scores packed column A. 1 Method summary Sample was dissolved in chloroform to triadimefon as internal standard, using polyethylene glycol 20M/GasChromQ packed column and flame Ionization detector to sample atrazine gas chromatographic separation and determination. A. 2 Reagents and solutions Chloroform; Triadimefon. ≥95%, should not interfere with the analysis of impurities; Atrazine Sample. Atrazine is known mass fraction ≥99.0%; Internal standard solution. Weigh 10.0g of triadimefon, placed 1000mL volumetric flask with chloroform to dissolve and dilute to volume, shake. A. 3 Instrument Gas chromatograph. with a hydrogen flame ionization detector; Column. 3% polyethylene glycol 20M/GasChromQ (80 ~ 100 mesh) stainless steel column (column or glass). A. 4 GC operating conditions Temperature (℃). Column temperature 200 ± 5, the gasification chamber 230, the detector chamber 230; Gas flow rate (mL/min). carrier gas (N2) 80.0, the hydrogen gas 40, air 400; Injection volume (μL). 1.0; Retention time (min). atrazine about 4.6, about 7.4 internal standard. GC operating conditions described above, the Department of typical operating parameters. According to the characteristics of different instruments, given operating parameters adjusted as appropriate, In order to obtain the best results. Typical atrazine suspension and the internal standard packed column gas chromatography is shown in Figure A. 1. 1 --- atrazine; 2 --- internal standard (triadimefon). Figure A. 1 atrazine wettable powder and the internal standard packed column gas chromatogram A. 5 measuring step A. 5.1 preparation of standard solution Weigh atrazine standard 0.1g (accurate to 0.0002g), placed in 15mL stoppered glass bottle with a pipette accurately transferred to 10mL Internal standard solution, and shake. A. 5.2 Sample preparation solution Weigh about containing herbicide atrazine 0.1g sample of (accurate to 0.0002g), placed in 15mL stoppered glass vial, with A. 5.1 used With a pipette accurately transferred to the internal standard solution 10mL, shake. A. 5.3 Determination Under these operating conditions, the instrument until a stable baseline, the number of continuous injection doses of the standard solution, calculated for each needle atrazine and the internal standard peak area When the ratio of repeatability, two needles herbicide atrazine to be adjacent to the internal standard peak area ratio of the relative change of less than 1.5%, according to the standard solution, sample Solution, sample solution, the order of the standard solution was measured. A. 6 Calculation The two needle sample solution and measured before and after the two doses of the standard sample solution of atrazine and the internal standard peak area ratios were averaged. test Samples atrazine mass fraction of 1 (%) according to equation (A.1) Calculated. (A.1) Where. --- Atrazine standard mass fraction, expressed as a percentage. A. 7 allowable difference The difference between two parallel determination results of 80% atrazine wettable powder should be less than 1.2%; 48% atrazine wettable powder should be less than 1.0%. ......

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