Chemical enterprises: Anyone who uses chemical methods to change the composition or structure of substances, or synthesize new substances, belongs to chemical production technology, that is, chemical processes, and the resulting products are called chemicals or chemical products.

Legal basis: Article 2 of the "Chemical Enterprise Safety Management System" All chemical enterprises (including chemical mines, chemical machinery, and chemical infrastructure construction units) should strictly abide by this system.

Extended information:

Agricultural pillars:

For a long time, human beings have mainly relied on agriculture for food and clothing. Since the beginning of slash-and-burn farming in ancient times, agriculture has relied on a large amount of human labor and has been restricted by various natural conditions, so its development has been very slow. In the 19th century, the use of agricultural machinery gradually improved labor conditions. However, in agricultural production, the real increase in output per unit area comes after the application of chemical fertilizers and pesticides.

Practice has proven that among various agricultural production-increasing measures, chemical fertilizers account for 40% to 65%. On the basis of the vigorous development of the petrochemical industry, the production of synthetic ammonia and urea has become large-scale, making the output of chemical fertilizers account for a large proportion of chemical products. In 1985, the total output of chemical fertilizers in the world reached approximately 140Mt, making it one of the bulk chemical products.

In the early days, humans used natural crop diseases and pests. It was not until the late 19th century, after the formation of the modern chemical industry, that Paris green (arsenic preparation) was used to kill potato beetles and Bordeaux mixture was used to control grape downy mildew, that agriculture began a new era of chemical control.

Insecticides and herbicides such as organochlorines, organophosphorus, and phenoxyacetic acid were produced in the 1940s and were widely used in agriculture, forestry, animal husbandry, and public health. However, some of this generation of pesticides have been banned in many countries due to their high residues, high toxicity, and ecological pollution.

Baidu Encyclopedia-Chemical Industry