Some standard content:
TCS±65.100
Chemical Industry Standard of the People's Republic of China
(2000)bzxZ.net
Published on June 5, 2000
Implemented on March 1, 2001
Published by the State Administration of Petroleum and Chemical Industry
No.: 7486-2000
IIG32BB2000
This standard is based on the chemical industry standard HG3283-1982 Zineb original drug with reference to the United Nations Food and Agricultural Standards (F4 pesticide standard) and combined with the domestic production safety status. This standard is composed of. The period from the implementation of this standard is HG3288-1982. This standard is issued by the former Technical Supervision Department of the Ministry of Chemical Industry of the People's Republic of China, and is under the jurisdiction of Liuyang Chemical Research Institute. The responsible unit for this standard is Shenyang Pesticide Factory. The main drafters of this standard are Xu Hui and Gao Xiaoshun. This standard was first issued in December 1956. This is the second revision. This standard is interpreted by the Secretariat of the National Technical Committee for Chemical Industry of China. 5
Chemical Industry Standard of the People's Republic of China
Zineb Technical
Other names of Zineb, their chemical formula and basic physical and chemical parameters are as follows: ISU applicable name: Zneb CIPA chemical formula: 25% chemical name, 1.2.2 diisocyanate structural formula: CHNS,7n molecular weight: 275.7 (according to the 1995 International Relative Mass List) Bioactivity: Soft Glycol HG3288-2000 H:3288-1182 Solubility: Not much in water 10Yg1 shrinkage agent, slight pyrrolidone, can be added to the Zineb compound, but can be absorbed under low temperature. Stability: Light, heat and humidity are all unstable. Range: This standard specifies the Zineb The requirements for the testing methods and marking, labeling, packaging and storage of pesticides. This standard is applicable to the pesticides composed of modified pesticides and the impurities produced by the production process. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through non-introduction. When this standard is published, the versions shown are effective. All standards will be revised. The parties using this standard should use the latest versions of the following standards when necessary. GB-19 Chemical reagent titration analysis (volume analysis) GB/1609-1979 (1989) Tablet method for preparation of tablets GB/-16C1-1995 Acceptance criteria for commercial pesticides GB/16C5-1979 (1989) Commercial pesticide packaging method H3793-1999 General requirements for pesticide packaging
3. Appearance: gray or yellow powder.
3-2 The control items of the first-generation zinc needle technical should meet the requirements of Table 1. The National Shidi and Chemical Industry High-tech 20000605 approved and implemented on 20015301
The first-generation zinc needle wear plate
Moisture content, total
4 Test method
4.1 Pick moss
[IG 3288—2000
Friend 1 The control items of zinc technical call index
5. 6~ 0. 0
Change according to (/1501-19701989) in \ original drug sampling "female production, use the age heat table to determine the sample packaging, the final sample volume should be less than +160g
2.2 Identification test - drop colorimetric test (CIPACMT130) 4.2.1 Reagent collector
Night change sulfur gland rate: night: g/kg user double confirmation trace trioxyethane reduced ml. People glacial acetic acid 0.251ml with trihydromethane alkene to 1uml., extreme sentence
sodium hydroxide boiling solution, 40/.
filter music: rlatmanN).1 or with appropriate
dropper: training point designated state number fine camp
4.2.2 Change step frequency
4.2. 2. 1\ Preparation of dots\|tt|| Weigh 0.55 of the sample and add 1-1ml of trisodium iodide. Stir thoroughly to disperse the sample. Use a dot-dropping device to drop onto a small filter, and place one dot in each row. The requirements for the actual dots are that the diameter of the center dot is 5mm, and the diameter of the outer ring of the powder dot (outer ring) is 2m. After dot-dropping, let it flow naturally. 4.2-2-2 Identification
Test three: Use a pressure dropper to drop a little disulfide solution onto a dot in the first row. If the center dot and the outer ring both appear pink, the sample is a paint umbrella.
Test: Use a dropper to absorb the oxidized tough filter and drop it onto the second dot in the second row. The center dot is natural color, and the outer ring is only pink. The bottom is mixed. Test 3: Use a dropper to absorb the mixed solution of sodium thiocyanate and acid monohydrate, and drop it on a spot. If the center and the ring are pink, the sample is zineb. 4.3 Determination of zineb content 4.3.1 Method The sample is decomposed in a clear acid solution to form disulfide and the interference analysis of the chemical. First, the solution absorbs hydrogen sulfide, followed by carbon monoxide absorption. The resulting solution is ethyl disulfide. After the absorption is reduced, it is determined by using a standard liquid alcohol. The reaction is as follows: H, NS, Zn--4H'+SO:+rNIICHCHNH,) +H.SO, 1 2CS, Zn*C.+C,H.OKCH.OSSK
2HOSSK+-H,GSSSTSCOC.H,-2KI
4.3.2 Solution
Sulfuric acid solution, 0.55mol/l.
Ethyl acetate sieve: lug/.
G32882000
Potassium hydroxide ethanol dilution: 11ml/L Prepared before use. Iodine decomposition solution: 1/L) = C.1mol/L Prepared and calibrated according to GB/T601, index: /L:
Interval: 10R/.Ethanol concentration:
4.3.3, Equipment
Zineb decomposition and absorption device see 1.
Press the gas release button
1 (25V); 2 keep turning on the two cooling devices: 1-the first absorption tube, 2-the second absorption tube, light decomposition and absorption device in Figure 1
1.3.1 Determination step
Weigh and check the sample and place it in the GC, add ethyl acetate and potassium hydroxide-alcohol solution in the first absorption tube, connect the decomposition and absorption device in Figure 1, check the tightness of the cooling water. Exhaust gas source, control the exhaust gas to 2~.4 gases per second evenly distributed through the absorption tube. Add the solution to the reaction plate through the long-necked funnel and shake it evenly. Heat it at intervals and control it carefully to prevent the reverse liquid from rushing out: stop adding the solution after 5 minutes, transfer the quantitative amount of the solution in the first absorption tube to 532ml of the solution, and wash it with 100mL of water. Put the washed solution into the 5m bottle, add the absorption tube or the indicator. Wash until there is no residue in the solution. Neutralize it with ethyl acetate until the color changes. Titrate with 5-5 drops of standard H-12 solution, and keep stirring at the same time. Titrate 10ml of the solution at the nearest point. Continue titrating the whole test. The blue ball is taken as the endpoint and the quality content of the test sample is expressed as
. The actual average concentration of the standard titration solution is calculated by formula 1: c(Y.-V)X0.1S7x100
, 1mml/mI less the consumption of iodine in the titration sample standard. : The potential product of the standard solution of vacant solution is 1.0 g/ml. The mass of Zineb expressed in grams is equivalent to 1.0 ml of alkali standard titration solution. 4.3.6 Tolerance The results of two parallel determinations shall be averaged and the arithmetic mean shall be taken as the determination result. 4.4 Determination of moisture content 4.4.1 Determination method According to GB/T15001979 (1 9A9) in the same way. 4.4.2 The deviation of the sum of the results of two parallel determinations shall not exceed ±15%, and the arithmetic mean shall be taken as the determination result. 4.5 The determination of the product shall be carried out in accordance with GH11601:18S3. 4.6 The inspection and acceptance of the product shall comply with the provisions of (H/11604). The limit value shall be determined by the static value comparison method. 5 Marking, labeling, packaging, purchase and transportation 5.1 The marking, marking and packaging of the original drug of Diphenylmethane shall comply with the provisions of GB2766. 5.2. The original drug of Zineb is packed in four layers of cowhide with plastic bags inside, and the net content of each package is 25kS. 5.3 If the user requests or orders for modification, other forms of packaging can be used, but they must comply with the heat regulations of (B379). 5.4 The packages should be stored in a warehouse that is away from wind, heat and low temperature. 5.5 During transportation, it should be strictly prevented from moisture and sunlight, and should not be in contact with objects, seeds, and cut materials. Avoid contact with skin and eyes to prevent inhalation through the mouth and nose. 5.6 Safety: Zineb is a low-toxic fungicide. When using this product, pay attention to personal protection of children, wear protective equipment, and clean the exposed skin with fertilizer and water after application. If poisoning occurs, it should be sent to the hospital for symptomatic treatment in time. 5. Warranty period: Under the specified shipping conditions, the warranty period of Zineb finished drug is 5 months from the date of production, and the decomposition rate is 6.8 times in 1 month.
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