GB/T 9556-2008 in English
VALIDphoxim technical
- Issued on:2008-07-11
- Implemented on:2009-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
本标准规定了辛硫磷原药的要求、试验方法以及标志、标签、包装、贮运，适用于由辛硫磷及其生产中产生的杂质组成的辛硫磷原药。
Introduction
National Standard of the People's Republic of China GB9556-2008 Phoxim Technical Agent
1. Background of Standard Formulation and Analysis of Technical Evolution
GB9556-2008 Phoxim Technical Agent was issued in 2008 and implemented in 2009, replacing the previous GB9556-1999 version. The main revisions to this standard include the cancellation of classification and grading, the deletion of chloride control items, and the optimization of technical requirements.
Phoxim is a highly effective insecticide widely used in the field of agricultural pest control. With the technological progress of the pesticide industry and the improvement of environmental protection requirements, the new version of the standard pays more attention to product quality control and environmental friendliness, reflecting the technical evolution trend of standardization in the pesticide industry.
| Item | Indicator (Phoxim technical) | Comparison with GB9556-1999 |
|---|---|---|
| Appearance | Light yellow to brownish red oily liquid | Add description to clarify the physical state of the product |
| Phoxim mass fraction | ≥90.0% | Remain unchanged to ensure product quality |
| Moisture content | ≤0.5% | Further strict requirements |
2. Technical requirements and test methods
2.1 Identification test
The standard stipulates that high performance liquid chromatography should be used for identification, and the relative difference between the retention time of a chromatographic peak in the sample solution and the cis-phoxim in the standard solution should be within 1.5%. This method ensures the purity and consistency of the product.
Application case: actual operation of high performance liquid chromatography
In the actual test, Capcell-Pak C18 chromatographic column and UV detector (254nm) were used, and separation was performed with a mobile phase of methanol + water in a ratio of 75:25. This method has the characteristics of high sensitivity and good repeatability.
2.2 Moisture Determination
Karl Fischer method is used to ensure that the moisture content meets the requirement of ≤0.5%. This method is fast and accurate and is suitable for industrial and laboratory environments.
2.3 Acidity Determination
Sodium hydroxide standard titration solution is used, and methyl red ethanol solution and bromocresol green ethanol solution are used as indicators to ensure accurate control of acidity indicators.
3. Implementation Suggestions
- Production stage:Strictly control the quality of raw materials and production processes to ensure that the quality of phoxim technical meets the requirements of GB9556-2008.
- Detection stage:Establish a complete laboratory detection system, equipped with advanced equipment such as high-performance liquid chromatography to improve detection efficiency and accuracy.
- Packaging and storage: Follow the provisions of GB3796, use clean and dry iron barrels for packaging, and strictly control the storage environment to avoid moisture and sunlight.
- Safety protection: Strengthen employee safety training, equip with necessary protective equipment, and ensure personal safety during operation.
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