The production, storage and transportation of insurance powder are highly dangerous. The development of the industry needs to be upgraded to safety and greening.

The chemical name of insurance powder is sodium dithionite, which is a white sandy crystal or light yellow powder chemical. Sodium dithionite is a flammable substance when exposed to moisture. It is insoluble in ethanol and soluble in sodium hydroxide solution. It reacts strongly with water and burns, accompanied by the production of toxic gas sulfur dioxide. Sodium dithionite has active chemical properties and strong reducing properties. As an important chemical raw material, sodium dithionite has a wide range of applications. It can be used as a bleaching agent, reducing agent, deoxidizer, preservative and antioxidant, and is used in printing and dyeing, food , papermaking, medical treatment, kaolin, daily chemical products, reagent synthesis and other fields.

The production process of sodium dithionite includes zinc powder method, sodium amalgam method and sodium formate method, among which the sodium formate method is divided into sodium metabisulfite method and alkaline method. The sodium formate method belongs to the third generation production technology. It has the advantages of low manufacturing cost, high quality of finished products, and can be produced on a large scale. It is the mainstream production process of sodium dithionite, accounting for about 90% of the output. However, the production of sodium dithionite using the sodium formate method will produce a large number of by-products, such as sodium metabisulfite, sulfur dioxide, methyl formate, sodium sulfite, ethylene oxide, etc. Due to the high pollution and high risk involved in the production of insurance powder, there is a risk that insurance powder will be replaced by thiourea dioxide which is safer and easier to store and transport.

According to the “2021-2026 China Sodium Hydrosulfite (Insurance Powder) Industry Market In-depth Research and Development Prospects Forecast Report》shows that my country’s current insurance powder manufacturing companies mainly include Hubei Yihua Chemical Co., Ltd., Hunan Zhongcheng Chemical Co., Ltd., China Salt Anhui Hongsifang Co., Ltd., Zhejiang Runtu Co., Ltd., Shandong Shouguang Guanghui, Jiangxi Hong’an Chemical, Shandong Yisen Chemical, Maoming Guangdi Chemical, etc., among which Hubei Yihua Chemical’s insurance powder production capacity reaches 100,000 tons/year. From the perspective of enterprise distribution, my country’s insurance powder manufacturing enterprises are mainly concentrated in Hubei, Hunan, Anhui, Shandong, Zhejiang, Guangxi and other regions.

At present, my country is a major producer and exporter of insurance powder in the world. While its production capacity meets domestic market demand, it is also exported to overseas markets such as South Korea, India, Canada, the United States, and Japan. Insurance powder is a typical dangerous chemical, which is very dangerous in production, product storage and transportation. In 2006, the relevant departments issued a notice requiring unified standardization of insurance powder safety management. Insurance powder production enterprises must switch to iron barrels for packaging. However, due to The implementation of the change from “bag” to “bucket” by insurance powder companies has been inconsistent. In recent years, there are still many accidents caused by insurance powder.

According to different application fields, insurance powder can be divided into industrial-grade insurance powder, food-grade insurance powder, pharmaceutical-grade insurance powder, etc. With the upgrading of market demand and the continuous optimization of related processes, my country’s high-end insurance powder production capacity has improved, and insurance powder The industrial structure is gradually adjusted. Industry analysts said that although insurance powder is highly dangerous, it has a wide range of applications. In recent years, with the process of industrialization in our country Accelerating, the market demand for insurance powder is constantly being released. Against the background of increasingly stringent environmental protection supervision and market supervision, the development of the insurance powder industry will be upgraded in the direction of safety, greenness, and high-end development.