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GB 28141-2011: [GB/T 28141-2011] Imidacloprid soluble concentrate
Status: Valid
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[GB/T 28141-2011] Imidacloprid soluble concentrate
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Basic data
Standard ID: GB 28141-2011 (GB28141-2011)
Description (Translated English): [GB/T 28141-2011] Imidacloprid soluble concentrate
Sector / Industry: National Standard
Classification of Chinese Standard: G25
Classification of International Standard: 65.100.10
Word Count Estimation: 9,971
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 6682-2008; GB/T 8170-2008; GB/T 14825; GB/T 19136; GB/T 19137
Adopted Standard: FAO specifications 582/SL-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 of imidacloprid solution agent can, test methods and marking, labeling, packaging, storage and warranty. This standard applies to imidacloprid and additives dissolved in a suitable water-soluble organic solvent can be processed into imidacloprid solution agent.
GB 28141-2011: [GB/T 28141-2011] Imidacloprid soluble concentrate
---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.
Imidacloprid soluble concentrate
ICS 65.100.10
G25
National Standards of People's Republic of China
Imidacloprid solution may be
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 582/SL (May2006) "may imidacloprid solution."
This standard FAO Specification 582/SL (May2006) and the main technical difference Cause "may imidacloprid solution" are as follows.
Standard control --- moisture present and pH ranges two indicators, FAO specifications uncontrolled these two indicators. The standard ratio Indicators Project
FAO specifications comprehensive.
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. Shenzhen Sinop letter farmers Ltd., Jiangsu Suke Sheng Group Co., Ltd., Zhejiang Hisun Chemical
Co., Ltd., Shanghai Yue Chemical Co., Ltd., Qingdao Hailier Pharmaceutical Co., Ltd., Nanjing Red Sun Co., Ltd., Jiangsu Evergreen
Agrochemical Co., Ltd.
The main drafters. Hou Chunqing, Zan Yan Kun, Li Ou Yan, Wu tautology, Wang Tiansheng, Yu Cheung Fat, Li Xuechen, Liu Kuitao, Jerry incense.
Imidacloprid solution may be
1 Scope
This standard specifies the requirements and test methods, marking, labeling, packaging, storage and transportation and to ensure that the solution can imidacloprid.
This standard applies to a dissolution aid imidacloprid and processed in a suitable water-soluble organic solvent may be imidacloprid solution.
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.
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 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 Method for determination of pesticide suspension
GB T 19136 Determination of heat storage stability of pesticide /
GB/T 19137 Pesticide low temperature stability determination
3.1 Composition and appearance
This product shall be made compliant imidacloprid and necessary auxiliaries, should be stable homogeneous liquid, no visible suspended matter and
precipitation.
3.2 Technical Specifications
Imidacloprid solution may be in accordance with Table 1.
Table 1 imidacloprid solution may be controlled Item Index
project
index
5% 10% 20%
Imidacloprid mass fraction /% 5.0 0.5-0.5 1.2-1.2 20.0 10.0 1.0 to 1.0
Moisture /% ≤ 0.5
The pH range of 5.0 to 8.0
TABLE 1 (cont.)
project
index
5% 10% 20%
Qualified solution stability
Low temperature stability of a qualified
Passing a heat storage stability
Low temperature stability test, the thermal storage stability test was measured every three months, at least once during a normal production.
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 "liquid formulation sampling" approach. Determining Sample packages with a random number table method; final sample size
Not less than 200mL.
4.3 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,
A peak sample solution retention time in the standard solution imidacloprid retention time of the peaks, the relative difference of 1.5% should be
Or less.
4.4 Determination of the content of Imidacloprid
4.4.1 Method summary
Sample dissolved in mobile phase, methanol and water as mobile phase, used as a filler C18 stainless steel column and UV detector at a wavelength of
At 260nm, of the sample imidacloprid RP-HPLC separation and determination, external standard.
4.4.2 Reagents and solutions
Methanol. HPLC grade;
Water. The new secondary steam distilled water;
Imidacloprid Sample. A known mass fraction w≥99.0%.
4.4.3 Instruments
HPLC. a variable wavelength UV detector;
Chromatographic data processor or chromatography workstation;
Column. 250mm × 4.6mm (id) stainless steel column, C18,5μm filler contents (or column with equivalent effect);
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. [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 about 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.
A typical solution may imidacloprid HPLC is shown in Figure 1.
1 --- imidacloprid.
HPLC FIG 1 FIG solutions can imidacloprid
4.4.5 Determination Step
4.4.5.1 Preparation of standard solution
0.1 g of weighed (accurate to 0.0002g) imidacloprid in Sample 100mL volumetric flask, diluted with methanol to the mark, the ultrasonic oscillation
5min to dissolve the sample, cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, dilute with the mobile phase
Release to the mark.
4.4.5.2 Preparation of sample solution
Containing 0.1 g of imidacloprid was weighed (accurate to 0.0002g) sample in 100mL volumetric flask, diluted with methanol to the mark, the ultrasonic vibrator
5min swing dissolve the sample cooled to room temperature, shaking. Pipette with a pipette 5mL above solution in 50mL volumetric flask, with the mobile phase
Diluted to the mark.
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 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.
4.4.5.4 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).
4.4.6 allows poor
The difference between the results of two replicates imidacloprid content should not exceed 0.5%, and the arithmetic mean value as a measurement result.
4.5 Determination of Moisture
According to GB/T 1600 in the "Karl Fischer method".
4.6 pH value measured
Carried out in GB/T 1601.
4.7 solution stability
4.7.1 Reagents and Equipment
Standard hard water. ρ (Ca2 Mg2) = 342mg/L, pH = 6.0 ~ 7.0, according to GB/T 14825 formulated.
Cylinder. 100mL.
4.7.2 Test Procedure
0.5mL pipette with the sample, a 100mL graduated cylinder and diluted to the mark with standard hard water, mixing, into this cylinder
30 ℃ ± 2 ℃ water bath, allowed to stand IH, diluent uniform, no precipitate qualified.
4.8 Low temperature stability test
Press 19137 of "emulsions and a homogeneous liquid formulation" GB/T performed. Precipitates no more than 0.3mL qualified.
Thermal storage stability test 4.9
According to GB/T 19136 of "liquid formulation" performed. After the heat storage mass fraction of imidacloprid to be not less than 97% before storage.
4.10 product inspection and acceptance
Shall comply with the provisions of GB/T 1604's.
5 marking, labeling, packaging, storage, security and guarantee period
5.1 marking, labeling, packaging
Brown glass bottles or PET bottles can be packaged imidacloprid solution with an application within the plug and the outer cover, the net content is generally bottle 100g, 500g
And the like; packaging box or corrugated plastic boxes, each box weighing no more than 10kg. The user may also request or order protocol, using other forms of
Type of packaging, subject to the provisions of GB 3796.
5.2 Storage
Imidacloprid solution package can airiness, dry place. Storage and transportation, to 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 formulation is low toxicity. It can penetrate through the skin. When using this product to avoid contact with the skin, application after application with soap and rinse with water.
Poisoning should immediately sent to hospital for symptomatic treatment.
5.4 Warranty Period
Storage conditions under predetermined period to ensure that the solution may be imidacloprid, two years from the production date.
Appendix A
(Informative)
Other names imidacloprid, structural formulas and physicochemical parameters of the basic
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). 0.61 water, 0.68 of toluene, 55 dichloromethane, 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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