Introduction to the properties and uses of fuming sulfuric acid

［分子style]H2SO4·χSO3

[Property]Colorless or brown oily thick fuming liquid. It is composed of sulfur dioxide dissolved in 100%Sulfuric acidMade in. Generally contains trioxidesulfur5%-20%, up to80%,its density, melting point, The boiling point, etc. all depend on the content of sulfur trioxideamountdifferent. Commonly used ones are20% smokeSulfuric acid(ie104.5% H2SO4.Relationship density1.9 melting point 11℃,boiling point 166.6℃. Also40%、60% and 66% varieties. atH2 SO4SO3for1： At about 1 hour, pyrosulfate crystals will condense into pyrosulfate crystals(H2S2O7)

Oleum during heating or decompression,Escape三sulfur oxideSmoke formed when humid air, hence the name. It has strong water absorption and when mixed with water, 三Sulfur oxide combines with water to form sulfuric acid. It is highly corrosive,Yes StrongOxygenchemical agent,sulfurSulfating agent, sulfating agent. For human skinskinhas strong oferosion, burning effect.

[Purpose]Mainly used as sulfonating agent,Used in conjunction with nitric acid, Can be used as nitrifying dehydrating agent. Widely used in the manufacture of nitrocellulose, dyes, explosives, and washersDetergent. It is also used in oil refining, petroleum refining and plasticMaterials and other industriesIndustry.

［ BriefManufacturing method]See”Sulfuric acid”

［安全and protection]SmokeSulfuric AcidIts water absorption, oxidation and corrosiveness are stronger than concentrated sulfuric acid, and it is a first-class inorganic acid corrosive substance. Danger Regulation Number: 91006. Packaged in acid-resistant ceramic jars,Every Net weight45kg,for forum use Sealed with acid-resistant material. Notes on storage, transportation and rescue operationsthingsXiang YuSulfuric acidSame.