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GB 28149-2011: [GB/T 28149-2011] Chlorsulfuron wettable powders
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[GB/T 28149-2011] Chlorsulfuron wettable powders
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GB 28149-2011
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Basic data
| Standard ID | GB 28149-2011 (GB28149-2011) |
| Description (Translated English) | [GB/T 28149-2011] Chlorsulfuron wettable powders |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | G25 |
| Classification of International Standard | 65.100.20 |
| Word Count Estimation | 10,135 |
| 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 14825-2006; GB/T 16150; GB/T 19136 |
| Adopted Standard | FAO specifications 391/WP-2003, 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 chlorsulfuron WP requirements, test methods and marking, labeling, packaging, storage and warranty. This standard applies to chlorsulfuron original drug, suitable additives and fillers from the processing of chlorsulfuron WP. |
GB 28149-2011: [GB/T 28149-2011] Chlorsulfuron 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.
Chlorsulfuron wettable powders
ICS 65.100.20
G25
National Standards of People's Republic of China
Chlorsulfuron WP
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 391/WP (2003) "chlorsulfuron WP."
This standard FAO Specification 391/WP (2003) "chlorsulfuron WP" major technical differences and the following reasons.
--- This standard suspension rate ≥85%, FAO Specifications predetermined ≥60%, in the FAO strict specifications;
--- uncontrolled moisture index the FAO specifications, this standard water content ≤2.5%, moisture control, to prevent agglomeration.
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. Hormone Research Institute Co., Ltd., Jiangsu Province, Shenyang harvest pesticides Limited.
The main drafters. Jiang Minyi, Xing Jun, Fan Lei, Wang Yang.
Chlorsulfuron WP
1 Scope
This standard specifies the requirements chlorsulfuron wettable powder, Test Method for marking, labeling, packaging, storage and period.
This standard applies to the original drug chlorsulfuron, suitable additives and fillers processed chlorsulfuron wettable powder.
Note. Other names, structural formulas and physicochemical parameters of the basic chlorsulfuron 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 14825-2006 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 should meet the criteria of the drug and chlorsulfuron appropriate processing auxiliaries and fillers are made as loose powder uniformly, there should be no lumps.
3.2 Technical Specifications
Chlorsulfuron WP should meet the requirements in Table 1.
Table 1 Control chlorsulfuron WP Item Index
project
index
10% 20% 25%
Chlorsulfuron mass fraction /% 10.0 20.0 1.2-1.2 25.0 1.5-1.5 1.0 to 1.0
Moisture content /% ≤ 2.5
pH range 6.0 to 9.0
TABLE 1 (cont.)
project
index
10% 20% 25%
Wetting time/s ≤ 60
Fineness (44μm test sieve) /% ≥ 98
Suspension rate /% ≥ 85
Passing a heat storage stability test
When a normal production, the thermal storage stability test was measured at least once every three months.
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 "commodity solid preparation sampling" approach. Determining Sample packages with a random number table method; final draw
Sample size should be less than 300g.
4.3 Identification Test
The present liquid chromatography --- identification test can be carried out simultaneously with the determination of the mass fraction of chlorsulfuron. Chromatography under the same operating conditions, the test
Comp retention time of the standard solution chlorsulfuron peak retention time of a peak solution, the relative difference of 1.5% should be
Or less.
4.4 Determination of the mass fraction of chlorsulfuron
4.4.1 Method summary
Sample solution was dissolved in methanol with aqueous ammonia, acetic acid in acetonitrile and water as mobile phase, using Nova-PakC18 filler to a stainless steel column
And a UV detector (230nm), the sample chlorsulfuron and high performance liquid chromatography assay.
4.4.2 Reagents and solutions
Methanol. HPLC grade;
Acetonitrile. HPLC grade;
Glacial acetic acid;
Water. The new secondary steam distilled water;
Aqueous ammonia. w (NH3) = 26% ~ 30%;
Ammonia solution. [Psi] (ammonia. water) = 1.300;
Ammonia in methanol. [Psi] (ammonia solution. methanol) = 1.4;
Chlorsulfuron Sample. chlorsulfuron known mass fraction w≥98.0%.
4.4.3 Instruments
HPLC. a variable wavelength UV detector;
Chromatographic data processor;
Column. 150mm × 3.9mm (id) stainless steel column Nova-PakC18 filler contents (or equivalent effect column);
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. Ψ (CH3CN.H2O.CH3COOH) = 40.60.0.5;
Flow rate. 1.0mL/min;
Column temperature. room temperature (temperature change should be less than 2 deg.] C);
Detection wavelength. 230nm;
Injection Volume. 5μL;
Retention time. chlorsulfuron about 4.3min.
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 wettable powders chlorsulfuron HPLC is shown in Figure 1.
1 --- chlorsulfuron.
HPLC chlorsulfuron FIG. 1 Wettable Powder
4.4.5 Determination Step
4.4.5.1 Preparation of standard solution
Weigh 0.05g chlorsulfuron standard (accurate to 0.0001g), a 100mL volumetric flask, dilute to volume with methanol solution of ammonia,
To dissolve the sample ultrasonic vibration 5min, cooled to room temperature, shaking.
4.4.5.2 Preparation of sample solution
Weigh 0.05g of chlorine-containing specimens chlorsulfuron (accurate to 0.0001g), a 100mL volumetric flask, diluted with methanol solution of ammonia to
Scale, to dissolve the sample ultrasonic vibration 5min, cooled to room temperature, shaken and filtered.
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 needles chlorsulfuron relative change in peak area adjacent
After less than 1.2%, measured according to the standard solution, sample solution, the sample solution, the order of standard solution.
4.4.6 computing
The mass fraction of the sample according to chlorsulfuron formula (1).
w1 = A2
· M1 · w
A1 · m2
(1)
Where.
W1 --- chlorsulfuron sample mass fraction in%;
A2 --- sample solution, the average peak area chlorsulfuron;
M1 --- Sample mass in grams (G);
W --- chlorsulfuron standard mass fraction in%;
A1 --- the standard solution, the average peak area chlorsulfuron;
--- M2 sample mass, in grams (g).
4.4.7 allows poor
Results difference chlorsulfuron replicates should be less than twice the mass fraction of 0.5%, 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 0.2g of chlorine-containing specimens chlorsulfuron (accurate to 0.0001g), the bottom of the cylinder
25mL whole suspension was transferred to 100mL volumetric flask, with ammonia in methanol to volume, shaken at 3min ultrasound, static
Set, after filtration, was measured according to 4.4 mass chlorsulfuron, calculate suspensibility.
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".
4.10 Thermal storage stability test
According to GB/T 19136 in the "solid preparation" performed. After the heat storage mass chlorsulfuron fraction should be not less than 97% of the average content before storage, the suspension
Rate should meet the standards for qualified.
4.11 product inspection and acceptance
Shall comply with the provisions of GB/T 1604's.
5 marking, labeling, packaging, storage, security, guarantee period
5.1 marking, labeling, packaging
Flag chlorsulfuron wettable powder, label, package should meet the requirements of GB 3796; chlorsulfuron aluminum bags Application WP
Or composite aluminum bag. The user may also request or order other forms of packaging protocols, subject to the provisions of GB 3796.
5.2 Storage
Chlorsulfuron WP package airiness, dry place; storage and transportation, prevent moisture and sunlight, no food, seed
Promoter, feed-mixing, avoid contact with the skin, eyes, mouth and nose to prevent inhalation.
5.3 Security
This product is a low toxicity of sulfonylurea herbicides. Are swallowed and inhaled toxic, it can penetrate through the skin. When using this product to avoid contact with the skin,
After application with soap and rinse with water. Poisoning should immediately sent to hospital for symptomatic treatment.
5.4 Warranty Period
Warranty. Under the provisions of storage and transportation conditions, chlorsulfuron WP warranty period of two years from the date of manufacture.
Appendix A
(Informative)
Other names chlorsulfuron, structural formulas and physicochemical parameters of the basic
This product is an active ingredient chloro other names, structural formulas and physicochemical parameters of the basic metsulfuron follows.
ISO common name. Chlorsulfuron
CAS Registry Number. 64902-72-3
CIPAC Numeric Code. 391
Chemical name. 1- (2-chlorophenyl) -3- (4-methoxy-6-methyl-1,3,5-triazin-2-yl) urea
Structure.
Empirical formula. C12H12ClN5O4S
Molecular weight. 357.8
Biological activity. weeding
Melting point. about 174 ℃ ~ 178 ℃
Vapor pressure (25 ℃). 3nPa
Solubility (22 ℃, g/L). 57 acetone; dichloromethane 102; 14 methanol; toluene 3; hexane 0.01; water 0.1 ~ 0.125 (25 ℃,
pH4.1), 0.3 (25 ℃, pH5)
Stability. when dry, light stability; in the soil, due to hydrolysis and microbial degradation and damage; half-life in soil
150d ~ 160d.
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