Gypsum CAS 10101-41-4, also known as dihydrate gypsum (CaSO4 · 2H2O), is a dihydrate of calcium sulfate. It is mainly used to treat stroke, cold and heat, relieve muscle sweating, eliminate dry mouth and burnt tongue, and relieve headaches and toothache.

Chinese name: gypsum

Foreign name: Gypsum

Nickname: calcium sulfate dihydrate, gypsum dihydrate

Chemical formula: CaSO4 · 2H2O

Molecular weight: 172.17

CAS login number: 10101-41-4

EINECS login number: 231-900-3

Melting point: 128 ℃

Boiling point: 163 ℃

Water solubility: slightly soluble

Density: 2.32 g/cm ³

Appearance: Colorless or white crystalline powder

Physical and chemical properties

Density: 2.32g/cm3

Melting point: 128 ° C

Boiling point: 163 ° C

Refractive index: 1.5248

Appearance: Colorless or white crystalline powder

Water solubility: Slightly soluble in hot water, soluble in hydrochloric acid, alcohol, and most organic solvents

Purpose

1. Used as a traditional Chinese medicine, it is spicy, sweet, and cold in the lungs and stomach meridians. It can clear heat and clear fire, eliminate troubles and quench thirst, and astringe and promote muscle growth.

2. Used as agricultural fertilizer, it can improve alkaline soil, and for general neutral or acidic soil, it can improve soil structure and provide calcium and sulfur components.

3. As an industrial material, it is used for model making, sulfuric acid production, paper fillers, paint, and chalk for blackboards.

4. As a medical material: used for medical food additives and fracture fixation.

5. As a building material: used as a cement retarder, etc.

6. As a food additive: used in the production of tofu pudding, tofu, etc.

7. A gypsum base used for painting.

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