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What Are The Properties Of Zinc Sulfide?

wallpapers Resource 2020-11-16
Zinc sulfide
 
Zinc sulfide is 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.
 
Ecological data
 
Zinc sulfide is slightly harmful to water. Do not allow undiluted or large amounts of product to contact groundwater, watercourses or sewage systems. Do not discharge the material into the surrounding environment without government permission.


Stable
 
1. If used and stored in accordance with specifications, it will not decompose. There are no known dangerous reactions. Avoid oxides and acids.
2. α-ZnS is a colorless hexagonal crystal; the relative density is 3.98, the melting point is 1700±20℃ (under 5.066×106Pa), and it sublimates when the temperature is higher than 1180℃; it is almost insoluble in water and acetic acid, and easily soluble in other acids. β-ZnS is a colorless cubic crystal; the relative density is 4.102 (25°C), the transformation temperature is 1020°C; it is almost insoluble in water, but easily soluble in acid.
3. This product is corrosive. poisonous. Can irritate the skin. Operators must wear work clothes and protective equipment. The workshop should be well ventilated.
 
Safety information
 
Customs code: 2830909000
WGK Germany: 3
Hazard category code: R31
Safety instructions: 50A
RTECS Number: ZH5400000

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