Traditional Culture Encyclopedia - Traditional virtues - What is a chemical enterprise
What is a chemical enterprise
Chemical enterprise: any use of chemical methods to change the composition or structure of substances, or synthesize new substances, are chemical production technology, that is, chemical process, the resulting products are called chemicals or chemical products.
Legal Basis: Article 2 of the Safety Management System for Chemical Enterprises All chemical enterprises (including chemical mines, chemical machinery, and chemical infrastructure construction units) shall strictly abide by this system.
Expanded Information:
Agricultural Pillar:
For a long time, human beings have been food and clothing have mainly depended on agriculture. And agriculture since the ancient slash-and-burn, has been relying on a large number of human labor, subject to a variety of natural conditions, the development is very slow. 19th century, the use of agricultural machinery, and gradually improve the labor situation. However, in agricultural production, the real increase in yield per unit area is the application of chemical fertilizers and pesticides after the matter.
Practice has proved that the agricultural measures to increase production, the role of fertilizer up to 40% to 65%. In the petrochemical boom on the basis of synthetic ammonia and urea production of large-scale, so that the production of fertilizers in the chemical products accounted for a large proportion of the world's total production of fertilizers in 1985 amounted to about 140Mt, becoming one of the bulk chemical products.
Early, human beings used natural crop pests. Until the end of the 19th century, after the formation of modern chemical industry, the use of Paris green (arsenic preparation) to kill potato beetles, Bordeaux liquid control of grape mildew, agriculture began a new period of chemical control.
The 1940s produced organochlorine, organophosphorus, phenoxyacetic acid and other pesticides and herbicides, widely used in agriculture, forestry, animal husbandry and public **** health. However, some of this generation of pesticides have been banned by many countries due to high residue, high toxicity, causing ecological pollution.
Baidu Encyclopedia - Chemical
- Previous article:What are the ancient Chinese fables?
- Next article:The significance of celebrity sculpture
- Related articles
- What does an apple conquer the square mean?
- What snacks are there in Jinjiang?
- What is Shandong 10 dark cuisine?
- Understanding and Understanding of the Basic Spirit of China's Excellent Traditional Culture
- Why are the ancient buildings in the West dominated by masonry structures, while those in China dominated by wood structures?
- Go on. How do you say it in English?
- What brand of fishing rod has good quality and high cost performance?
- What is the difference between thick steel wire and thin steel wire used in orthodontics?
- How to write an essay for the 2016 Hunan college entrance exam without running off the topic
- How did 16 ethnic minorities perish in the history of China?