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How To Define The Development And Safety Of Pesticides?

General brand manufacturers of pesticides are quite quality assurance, there is a guarantee of weight will naturally have a degree of security.

 But now with the rapid development of pesticides, product quality problems more and more people's attention. However, how to properly evaluate the quality of insecticidal aerosol products? Most producers, distributors and users often simply evaluate the quality of their products with their biological effects, while ignoring many other important factors that affect the quality of the product. We all know that since aerosol technology is a multidisciplinary integrated technique, it is not a simple addition to the aerosol product's integrity point of view, it is not a simple addition between a container, a valve, a propellant and an insecticidal active ingredient, and But also related to the use of efficacy, safety and economy, but also in line with the World Health Organization (WHO) on the toxicity of pesticides. Therefore, the quality of insecticidal aerosol products, we should be from the physical and chemical properties of products, biological effects and safety of three major aspects of comprehensive evaluation.

The safety of insecticidal aerosols is manifested in the following aspects,

1. Insecticidal aerosol toxicity Commonly used insecticide aerosol propellant, solvent, active ingredients are certain toxicity. 70 years due to CFC (chlorofluorocarbons) on the destruction of the ozone layer has been gradually limited and prohibited use; the eighties and put forward the VOCs (volatile organic compounds) on the environmental pollution hazards, visible insecticide aerosol directly damaged In the ecological environment on which human beings live, the ultimate threat to people's survival and safety, so producers should strictly abide by the international pesticide aerosol harmful substances in the restrictions or prohibited provisions. The toxicity of insecticidal aerosols is generally evaluated by the following tests.

1) Acute oral toxicity and acute percutaneous toxicity, expressed as LD50, ie, lethal dose or half lethal dose, expressed in mg / kg, the greater the LD50 value of the product, the lower the toxicity of the compound.

2) acute inhalation toxicity to LC50 that is lethal concentration or half of the lethal concentration, the unit expressed by g / l.

Some producers believe that the greater the toxicity of the active ingredient of the insecticidal aerosol or the higher the concentration, the more obvious the insecticidal effect is, so that they use high concentrations of highly toxic substances in order to blindly pursue the biological effects of the product, This product is used in the crowd room, and long contact with people, will seriously endanger human health. In fact, a good pesticide aerosol formula is the best combination of a variety of ingredients, not only insecticidal effect, and the use of low concentrations of human and mammal toxicity is also low.

2. Flammability of Insecticidal Aerosols The current flammability of aerosols has become an important issue of concern, and shocked by the annual economic losses caused by the burning and explosion of aerosol products. According to GB / T14449-1993 test method to measure the maximum length of the product to extend the flame to determine the relative burnability of the product. General insecticidal aerosol flame length of about 40cm. For relatively combustible products, should improve the formula, reduce its flammability. At present, foreign requirements in the insecticidal aerosol cans marked on the burning level, easy to identify and distinguish treatment.