The production process of yellow dextrin can be divided into four stages: pretreatment, pre-drying, thermal conversion and cooling. ①pretreatment Usually a dilute solution of an acidic catalyst is sprayed onto the dried starch, and hydrochloric acid is commonly used. The elements of pretreatment are the amount of...
The epidemic affects India's chemical imports and exports significantly decline Jiujiang Huirong Chemical Company learned from the European Chemical Industry Council 202 report (Cefic-2020) that in 2018, the world's chemical product (non-medicinal) sales amounted to 3.35 trillion euros, of which India’s chemical sales amounted to 89...
Upstream, the domestic liquid alkali market is relatively stable under the support of stable downstream demand at present, the local market adjustment is not big, basically maintain the early level, high finishing. Export boost, stable demand, short term is still good to support the domestic...
Sodium hydrosulfide is mainly used in medicine, mineral processing, fuel, tanning and organic synthesis industries. Sodium thiohydride is the raw material for the manufacture of ammonium sulfide and pesticide semi-products in the pesticide industry, sodium thiohydride is widely used in copper ore dressing in the...
When sodium sulfide comes into contact with skin, remove contaminated clothing immediately and rinse with plenty of water for up to ten minutes. When in contact with your eyes, lift your eyelids immediately and rinse thoroughly with plenty of running water or saline for more...
There are four main industrial production methods of sodium sulfide, namely, coal reduction method of mirabilite, gas reduction method, and barium sulfate by-product of sodium sulfide. Hydrogen sulfide method, the second method due to the complex production process, high production costs, the use of restrictions....