GB 13649-2009Fenitrothion technical (English PDF)

Foreword

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

This standard uses redrafted law revision using FAO specifications 35/T C/S (1988) "fenitrothion original drug." the FAO standards and specifications 35/T C/S (1988) The main technical differences are as follows.

--- This standard specifies fenitrothion content of not less than 95.0%, FAO specifications prescribed fenitrothion content of not less than 930g/kg.

This standard replaces GB 13649-1992 "fenitrothion original drug." this standard compared with GB 13649-1992, the main differences are as follows.

--- Fenitrothion original drug by the mass fraction of not less than 93%, 85% and 70% to not less than 95%;

--- Increase S- methyl fenitrothion control indicators;

--- By the acidity of not more than 0.3%, 0.4% and 0.5% to not more than 0.1%;

--- By the water not more than 0.2% to not more than 0.1%.

Appendix A of this standard is an informative annex.

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 the original drug fenitrothion requirements, test methods and marking, labeling, packaging, storage and transportation.

This standard applies to the original drug Fenitrothion Fenitrothion impurities generated by the production and composition.

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 GB/T 1604 Goods pesticide regulations for acceptance GB/T 1605-2001 Sampling Method commercial pesticides GB 3796 pesticide packaging General

3 Requirements

3.1 Composition and appearance. This product should Fenitrothion and impurities generated in the production of the composition, should be pale yellow to dark brown liquid, no visible FOD.

3.2 fenitrothion original drug should be consistent with the requirements in Table 1.

Table 1 Fenitrothion original drug control project indicators

Item Index

Fenitrothion content /% >= 95.0 S- methyl fenitrothion mass fraction /% <= 2.0 Moisture /% <= 0.1 Acidity (H2SO4 meter) /% <= 0.3 Test Method 4

5 Marking, labeling, packaging, storage and transportation

Flag 5.1 fenitrothion original drug, labeling, packaging, should meet the requirements of GB 3796.

5.2 fenitrothion original drug application, clean, dry wall is coated with a protective layer of iron drum, barrel, net weight should be less than 200kg. Also root According to user requirements or the order agreement, the use of other forms of packaging, but to comply with the provisions of GB 3796.

5.3 fenitrothion original drug 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. This product is toxic organophosphate insecticides pesticides are swallowed or inhaled toxic to the eyes, skin irritation. The FDA should wear Protective gloves, masks and goggles, wear clean protective clothing, wash with soap and water immediately after application to avoid skin and eye contact with liquid. in case Wrongly, should be sent to hospital for treatment.

5.6 Acceptance period. Fenitrothion original drug acceptance period of 1 month. From the date of delivery, within a month, the finished product quality inspection, its Indicators should meet the requirements of this standard.

Appendix A

(Informative)

Fenitrothion quality gas chromatographic method scores packed column A. 1 Method summary Sample was dissolved in chloroform to lindane as internal standard, using the 5% OV-101/ChromosorbW-HP for the stainless steel filler Column and a flame ionization detector, the sample of fenitrothion, S- methyl fenitrothion and measured by gas chromatography internal standard method Quantified.

A. 2 Reagents and solutions Chloroform;

Fenitrothion standard. a known mass fraction, >=98.0%;

Internal standard. lindane, should not interfere with the analysis of impurities;

Fixative. OV-101;

Vector. ChromosorbW-HP, diameter of 125µm ~ 150µm (100 mesh to 120 mesh);

Internal standard solution. Weigh Lindane 5g, placed in 500mL flask with chloroform dissolved and diluted to the mark.

A. 3 Instrument

Gas chromatograph. with a hydrogen flame ionization detector;

Chromatographic data processor or chromatography workstation;

Column. 500mm × 2.2mm (i.d.) Stainless steel column, filled with 5% OV-101/ChromosorbW-HP filler;

Micro injector. 10µL.

A. 4 GC operating conditions Temperature (°C). Column Room 155 ± 5, the gasification chamber 220, detection chamber 250;

Gas flow rate (mL/min). carrier gas (N2) 15, hydrogen gas 30, air 300;

Injection volume. 1.0µL;

Retention time. fenitrothion about 11min, S- methyl fenitrothion about 16min, lindane about 5min.

The above operating conditions, the Department of typical operating parameters, according to the characteristics of different instruments and columns for a given operating parameters to make appropriate adjustments to to obtain the best results. Typical fenitrothion original drug GC is shown in Figure A. 1.

1 --- internal standard (lindane);

2 --- fenitrothion;

3 --- S- methyl fenitrothion.

Figure A. TC 1 Fenitrothion gas chromatogram

A. 5 measuring step

A. 5.1 Preparation of standard solution Weigh fenitrothion standard 0.1g (accurate to 0.0002g), placed in 15mL stoppered glass bottle with a pipette accurately added 10mL Internal standard solution, shake well.

A. 5.2 Preparation of sample solution Weigh the sample containing fenitrothion 0.1g of (accurate to 0.0002g), placed in 15mL stoppered glass vial, with the A. 5.1 in the same Only pipette accurately added internal standard solution 10mL, shake.

A. 5.3 Determination Under these operating conditions, after the instrument is stable, continuous injection of several doses of the standard solution until the two adjacent needles fenitrothion and the internal standard peak area After the relative change in volume of less than 1.5%, according to the solution, the sample solution, the sample solution and standard sequence of the standard solution was measured.

A. 6 Calculation

The two needles in the sample solution and measured before and after the two-pin standard sample solution fenitrothion and the internal standard peak area ratios are averaged.

1 sample mass fraction (%) of fenitrothion according to formula (A.1) Calculated.

Where.

Book GB 13649-2009

--- Fenitrothion standard mass fraction, expressed as a percentage.

The two needles in the sample solution is measured with S- methyl fenitrothion peak areas are averaged. Sample S- methyl fenitrothion Parathion 2 mass fraction (%) according to equation (A.2) Calculated.

2 = A2A1 ×

1 (A.2)

Where.

A1 --- sample solution, fenitrothion mean peak area;

A2 --- sample solution, the average S- methyl fenitrothion peak area;

1 --- sample fenitrothion mass fraction, expressed as a percentage.

A. 7 allowable difference the difference between two parallel determination results, fenitrothion should be less than 1.2%, the arithmetic mean value as a measurement result.

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