GB 23555-200925% Buprofezin wettable powders (English PDF)

Foreword

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

Since the implementation of this standard, HG2463.2-1993 "25% buprofezin WP" 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 25% buprofezin WP requirements, test methods and marking, labeling, packaging, storage and transportation.

This standard applies to the buprofezin original drug, suitable additives and fillers processed into 25% buprofezin WP.

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 WP Pesticide wettability measurement method 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

5 Marking, labeling, packaging, storage and transportation

5.1 25% buprofezin WP signs, labeling and packaging should comply with the provisions of GB 3796.

5.2 25% buprofezin WP with aluminum foil bag or plastic bag, net weight of 100g, 200g, 250g, 500g; packaging Available cartons, corrugated cardboard box or Plastic boxes, each containing a net weight of not more than 25kg. You can also order or agreement according to user requirements, the use of its Other forms of packaging, subject to the provisions of GB 3796.

5.3 25% buprofezin WP package 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. buprofezin as low toxicity pesticides, are swallowed or inhaled toxic. When used, should wear protective gloves, masks, wearing clean protective clothing.

Immediately after use with soap and water. In case of poisoning, should go to hospital for examination and treatment.

5.6 Warranty. under specified conditions of storage, 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/GaschromQ filler Column and flame ionization detector, the sample of buprofezin gas chromatography separation and determination.

A. 2 Reagents and solutions Chloroform;

Fixative. OV-101;

Carrier. GaschromQ particle diameter of 180µm ~ 250µm;

Dicyclohexyl phthalate esters. shall not interfere with the analysis of impurities;

Internal standard solution. Weigh 4.0g dicyclohexyl phthalate esters in 500mL flask with chloroform dissolved and diluted to the mark, 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; 10 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. A typical 25% buprofezin WP packed column gas chromatography is shown in Figure A. 1.

1 --- solvent;

2 --- buprofezin;

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

Figure A. Packed Column Gas Chromatography 1 25% buprofezin WP and the internal standard

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.

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.