Analysis of the difference between industrial sulfuric acid and reagent sulfuric acid

As we all know, most of the sulfuric acid used in production is industrial sulfuric acid, and the sulfuric acid we use often contains impurities, and its purity is uncertain. There may be heavy metals, sulfur dioxide and other substances, which are followed by Xiaobian. Learn more about the difference between industrial sulfuric acid and reagent sulfuric acid. Synthetic metal

The raw material of industrial sulfuric acid is generally pyrite ore. The composition is FeS2, which is ground and burned in a combustion furnace to form Fe2O3 and SO2 gas.

4FeS2 + 11O2 == 2Fe2O3 + 8SO2 (gas)

SO2 continues to oxidize to SO32SO2 + O2 == 2SO3SO3 in the presence of a catalyst (generally V2O5) to absorb water, which can produce sulfuric acid. It is conceivable how much this process may be noisy with various impurities.

The preparation process of reagent sulfuric acid is different from industrial sulfuric acid. It can be prepared by heating and distilling industrial sulfuric acid in quartz vessels, which leads to the possibility that no impurities will be incorporated, but due to such a method. It consumes more energy and its price is more expensive.

The reagent sulfuric acid has a high purity and the impurity content is almost zero. It is specially used for chemical experiments and chemical analysis.

Generally, industrial sulfuric acid is classified into 93%, 98%, and 105%. The purity is not very high, the impurity content is high, and the impurity composition is also complicated. However, it can be widely used in industrial applications, such as chemical fertilizer, electroplating, etc. And other industries. The use of the reagent sulfuric acid is applied to other places, and the use of the components varies with the use of the components. Sulfuric acid manufacturers will also have different manifestations when they are produced.