Safety of zinc sulfide

High hardness and high brittleness. There is no fixed melting point at atmospheric pressure. Stable performance at room temperature and pressure. Not soluble in alkaline solutions or water, slightly soluble in hydrochloric acid, and easily soluble in concentrated sulfuric acid and nitric acid. Easy to absorb water and form stable dihydrate compounds. The color of the light darkens. Stable in dry air, gradually oxidized to zinc sulfate when left in moist air or containing moisture. Irritating. Zinc sulfide has a certain degree of irritation to the body, so specific requirements exist when applying or storing packaging. It is necessary to use barrels lined with polyethylene or woven bags for packaging, with a net weight of around 50 kilograms or 25 kilograms, and not too light or heavy. The storage area must also be ventilated and dry and cannot be stored outdoors. The container should also be sealed to avoid moisture. Mixing, holding, and transport edible items or feed are not allowed. During transportation, it is necessary to have a cover to prevent rain and sunlight. When loading and unloading, handling with care is essential to prevent breakage packaging. This item has a certain degree of corrosiveness and toxicity, which can cause skin irritation. Therefore, operators should wear work clothes and protective equipment. The ventilation in the workshop should also be good. If used and stored according to specifications, it will not decompose, and there are no known hazardous reactions, avoiding oxides and acids. α– ZnS is a colorless hexagonal crystal; Relative density 3.98, melting point 1700 ± 20 ℃ (at 5.066 × At 106Pa, sublimation occurs at temperatures above 1180 ℃; Almost insoluble in water and acetic acid, easily soluble in other acids. β– ZnS is a colorless cubic crystal; Relative density 4.102 (25 ℃), conversion temperature 1020 ℃; Almost insoluble in water, easily soluble in acids. Store in a well-ventilated and dry warehouse, avoiding outdoor storage. The container must be sealed to prevent moisture. If you are looking for high quality, high purity and cost-effective zinc sulfide, or if you require the latest price of zinc sulfide, please feel free to email contact mis-asia.