Pesticides are toxic, some pesticides are highly toxic, and some pesticides are less toxic. So what is the toxicity of pesticides? The following pesticide nets are described in the specific situation of pesticide toxicity standards. Woven Polypropylene Covers,Paint Roller Covers,Polypropylene Roller Cover,Woven Polypropylene Roller Cover Ningbo Beilun Gelei Plastic Parts Co.,Ltd , https://www.paintwelltools.com
In toxicology, the median lethal dose, referred to as LD50 (Lethal Dose, 50'), is a commonly used indicator for describing the toxicity of toxic substances or radiation. According to the amount of pesticide lethal dose (LD50), the toxicity of pesticides can be divided into the following five levels:
1. Microtoxic pesticides. The median lethal dose is 5000 mg/kg/kg body weight. Such as carbendazim, chlorothalonil, ethyl aluminum phosphate, zinc, zinc, sterilized Dan, simazine and so on.
2. Low toxicity pesticides . The median lethal dose is 501 to 5000 mg/kg body weight. Such as trichlorfon, insecticidal double, malathion, phoxim, acephate, metformin, butachlor, glyphosate, thiophanate, trifluralin, bentazon, atla Jin et al;
3. Poisoned pesticides. The median lethal dose is 101 to 500 mg/kg body weight. Such as Dimethoate, Ye Yu San, Kuweiwei, Dixon, 402, pyrethroid pesticides;
4. Highly toxic pesticides. The median lethality is 51 to 100 mg/kg body weight. Such as carbofuran, fluoroacetamide, cyanide, 401, zinc phosphide, aluminum phosphide, arsenic, etc.;
5. Highly toxic pesticides. The median lethal dose is 1 to 50 mg/kg body weight. Such as monocrotophos, phosphorus amine, methamidophos, Suhua 203, 3911, etc.;
Therefore, in the purchase and use of pesticides, we must first understand the toxicity of the pesticides purchased, in accordance with the requirements of the instructions, under the guidance of the technical staff, must not be careless.