Anhydrous lithium sulfate

Basic Information:

Product Name: Lithium Sulfate

English name: Lithium sulphat

Aliases:Anhydrous Lithium Sulfate

Chemical formula: Li2SO4

Molecular weight: 109.94

CAS registration number: 10377-48-7

EINECS Accession Number: 233-820-4

Melting point: 859℃ water-soluble soluble in water

Density: 2.06 (water=1)

Appearance:White hygroscopic crystals

Physical and chemical properties:

Colorless monoclinic crystal.130℃ lose crystal water.Soluble in2.6parts of water, almost insoluble in ethanol.The aqueous solution is neutral.The relative density is2.06.The melting point is859°C.The median lethal dose (mice, oral)1190mG/kG.

There are three crystal forms, α, β, and γ.α type is white monoclinic crystal, β type is hexagonal crystal, γ type is cubic crystal.Hygroscopic.from concentrated aqueous solutionThe crystallized lithium sulfate monohydrate is very stable.

Resolve resolution:

1.Lithium carbonate method: add the lithium carbonate solution into the reactor, slowly add sulfuric acid under stirring to react, and obtain lithium sulfate monohydrate by evaporation concentration, cooling crystallization, centrifugation, and drying to obtain lithium sulfate.The reaction equation is:

Li2CO3+ H2SO4→Li2SO4+ H2O + CO2↑

2.Slowly add dilute sulfuric acid to the suspension of lithium carbonate under constant stirring. Pay attention to prevent the reactant from overflowing because the acid is added too fast and the reaction is too intense.The reaction is carried out until the suspension is completely dissolved, and an aqueous solution of lithium sulfate can be obtained.Evaporative concentration can crystallize lithium sulfate monohydrate from aqueous solution.The anhydrous salt can be obtainedby heating lithium sulfate monohydrate in an oven to120 °C for dehydration.

Use:

1.Used as raw material for special high-strength glass;

2.Used as analytical reagent, also used in pharmaceutical industry;

3.Flavoring agent used in the production of food and synthetic beverages.

Storage method:

Stored in a ventilated and dry warehouse, moisture-proof.