Blog 2017-09-06 1,058 0
The safety of insecticidal spray is always concerned by the distribution department, consumer and administrative department of the manufacturer. Its safety mainly involves the toxicity and combustion of spray.
1. Insecticidal sprays are commonly used to kill spray propellants, solvents, and active ingredients. In the 1970s, the destruction of the ozone layer caused by CFC (CFCS) was gradually restricted and prohibited. In the eighty s and put forward the VOCs (volatile organic compounds) to the environment pollution hazard, visible insecticidal spray direct harm to the ecological environment to the survival of humans, eventually threaten the human survival, safety. So smear on producers should strictly abide by the international regulations to limit of harmful substances or disable in spray. The toxicity of insecticidal spray was evaluated with the following tests.
1) the acute oral toxicity and acute dermal toxicity, LD50 to the lethal dose or half lethal dose, said unit expressed in mg/kg, the greater the LD50 value of products, said the lower the toxicity of the compound, namely the safer.
2) acute inhalation toxicity, expressed in LC50 as the concentration of death or half of the lethal concentration, expressed in g/l.
Some producers that the greater the effective ingredients of toxicity of insecticidal spray or use concentration is higher, it shows the insecticidal effect of the more obvious, so they too blindly pursue the products of biological effect, and the use of high concentration and highly toxic substances, the product used in the bedroom, and one contact for a long time, will cause serious damage to human body health. In fact, a good formula for insecticide spray is the best combination of various ingredients, not only good for killing insects, but also low in concentration, and low toxicity to humans and mammals.
2. The combustion of spray vaporizers has become an important issue of concern, and the ambassador of the economic loss caused by the combustion and explosion of spray products every year is a shock. According to GB/T14449-1993, the maximum length of the flame of the product was extended to determine the relative combustion of the product. The flame length of general insecticidal spray is about 40cm. For relatively combustible products, the formula should be improved to reduce its combustion. The foreign requirement is to indicate the combustion level on the label of insecticide spray can be easily identified and differentiated.
Therefore, the factors that affect the product quality of insecticidal spray products are diverse and they are interrelated with each other. Due to the late start of Chinese insecticidal spray sprays, the development of the insecticidal spray in China has been developing rapidly in recent years, which has caused considerable problems in the quality of insecticidal spray products in our country. In terms of spray production manufacturer in Shandong province, many manufacturers of technical personnel lack of regular and systematic learning, technical personnel business level is not high, some manufacturers crude production equipment, production technology, and quality inspection is not perfect, not form a complete production line, stays in the state of mill type, even the most basic of acute leak check, water bath, don’t have, not to mention the fog particle diameter, injection rate, injection process and the quality of the spray Angle detection. In addition, as the supervision and inspection departments at all levels should strengthen management, strictly follow the national standards to ensure the quality of products of insecticide spray products are prevented from entering the market.
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