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What Environment Is Zinc Sulfide Most Afraid Of?

wallpapers Resource 2020-11-16
Zinc sulfide
 
White to off-white or light yellow powder. See the light darken. It is stable in dry air, and when it is placed in humid air for a long time or contains moisture, it will gradually oxidize to zinc sulfate. Soluble in dilute inorganic acid, soluble in alkali, insoluble in water. The relative density is 3.98 (α type), (d25) 4.102 (β type). It is irritating.
 
Physical data
 
The product has two crystal types. Type A zinc sulfide is a colorless hexagonal crystalline powder or white to off-white or light yellow powder. The relative density is 4.087. The melting point is 1700°C. Thermal conductivity 25.1 w/(m?K), thermal expansion coefficient (volume): 100℃, 0.163; 200℃, 0.395; 400℃, 0.919; 800℃, 2.146. B-type zinc sulfide is cubic crystal. White to off-white or yellow powder. The relative density is 4.102, and the melting point is l700°C. Coefficient of thermal expansion (volume): 100°C, 0.156; 200°C, 0.386; 400°C, 0.898; 800°C, 1.996. It can be slowly oxidized to sulfate in the air. The crystal form transition temperature is 1020°C. Soluble in dilute inorganic acid. Insoluble in water.
 

Storage method
 
Store in a ventilated and dry warehouse, avoid open storage. The container must be sealed to prevent moisture.

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