GB 23556-200920% Buprofezin emulsifiable concentrates (English PDF)

Foreword

The standard Chapter 3, Chapter 5 are mandatory, the rest are recommended.

Since the implementation of this standard, HG2463.3-1993 "buprofezin EC" abolished.

Appendix A of this standard is the data appendix.

The standard proposed by China Petroleum and Chemical Industry Association.

This standard by the National Standardization Technical Committee on Pesticides (SAC/TC133) centralized.

1 Scope

This standard specifies 20% buprofezin EC requirements, test methods and marking, labeling, packaging, storage and transportation.

This standard applies to the buprofezin original drug and preparation of the emulsifier is dissolved in a suitable solvent, 20% buprofezin EC.

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

3 Requirements

5 Marking, labeling, packaging, storage and transportation

5.1 20% buprofezin EC marking, labeling and packaging should comply with the provisions of GB 4838.

5.2 20% buprofezin EC application or polyester glass bottles with inner plug and the cap, bottle net content of 250mL, 500mL, etc;

Packaging with a plastic box or corrugated boxes, each box of net weight shall not exceed 20kg.

5.3 According to user requirements or ordering agreement, you can use other forms of packaging, but to comply with the provisions of GB 4838.

5.4 The 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. buprofenzin low toxicity pesticides. The FDA should wear protective gloves. Spray when the wind direction, the nose and mouth to prevent inhalation, skin After the exposed parts of the body or skin contact with the product, should be washed with soap and water. In case of poisoning should promptly consult a doctor.

5.7 Warranty. under specified conditions of storage, 20% buprofezin EC guarantee period, from date of manufacture for 2 years.

Appendix A

(Informative)

Buprofenzin quality gas chromatographic method scores packed column A. 1 Method summary Sample was dissolved in chloroform, dicyclohexyl phthalate esters as internal standard, using the 5% OV-101/ChromosorbGasChromQ to fill a glass column (or stainless steel column) and a hydrogen flame ionization detector, buprofezin by gas chromatography and the internal standard.

A. 2 Reagents and solutions Chloroform;

Fixative. OV-101;

Dicyclohexyl phthalate esters. interference analysis should not contain impurities;

Internal standard solution. Weigh 4.0g dicyclohexyl phthalate esters, placed in 500mL flask with chloroform dissolved and diluted to the mark Degree, shake;

Buprofenzin standard. a known mass fraction >=98.0%.

A. 3 Instrument

Gas chromatograph. with a hydrogen flame ionization detector;

Chromatographic data processor or chromatography workstation;

Column. 1m × 3mm (. I.d) glass column, built 5% OV-101/GasChromQ filler particle size 180µm ~ 250µm (Or have other column of the same column efficiency).

A. 4 GC operating conditions Temperature (°C).200 column temperature, the gasification chamber 250, the detector chamber 250;

Gas flow rate (mL/min). carrier gas (N2) 30, hydrogen gas 40, air 400;

Retention time (min). 5 buprofezin; phthalate, dicyclohexyl phthalate 10.

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. A typical 20% buprofezin EC packed column gas chromatography shown in Figure A. 1.

1 --- solvent;

2 --- buprofezin;

3 --- internal standard (phthalate, dicyclohexyl phthalate).

Figure A. 120% buprofezin EC and the internal standard packed column gas chromatogram

A. 5 measuring step

A. 5.1 preparation of standard solution Weigh buprofenzin standard 0.08g (accurate to 0.0002g) in 15mL stoppered glass bottle with a pipette accurately transferred within 10mL Standard solution, and shake.

A. 5.2 Sample preparation solution Weigh about 0.08g sample containing buprofezin the (accurate to 0.0002g) in 15mL stoppered glass vial, with A. With 5.1 used 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 buprofezin and the internal standard peak area Repeatability ratio, when two needles buprofenzin relative change compared with the internal standard peak area of less than 1.2% to be adjacent, in accordance with 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 buprofezin and the internal standard peak area ratios are averaged.

Buprofezin sample mass fraction of 1 (%) according to equation (A.1) Calculated.

1 = gamma2

Where.

gamma1 --- standard solution, buprofezin and the internal standard peak area ratio of the average;

gamma2 --- sample solution, buprofezin and the internal standard peak area ratio of the average;

--- Standard samples buprofezin mass fraction, expressed as a percentage.

A. 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.