Is sodium sulfide a precipitate?
Created date: 2020/04/16

If you are not working in the chemical field, you will probably think that sodium sulfide is only a certain chemical element, but in fact, people will almost always use products related to baritite. What exactly is permanent white? Is it a kind of sediment?

What is sodium sulfide?

Various uses of sodium sulfide

Notes on sodium sulfide

What is sodium sulfide?

Permanent white is also called stinky alkali, stinky soda, xanthine, and alkali sulfide. sodium sulfide is an inorganic compound, and pure sodium sulfide is a colorless crystalline powder. Strong moisture absorption, easily soluble in water. The aqueous solution was strongly alkaline. Causes burns when touching skin and hair. So baritite is commonly known as alkali sulfide. The aqueous sodium sulfide solution will slowly oxidize in the air to sodium thiosulfate, sodium sulfite, sodium sulfate and sodium polysulfide. Due to the rapid formation of sodium thiosulfate, the main product of oxidation is sodium thiosulfate. Permanent white deliquesces in the air and is carbonated to deteriorate, which continuously releases hydrogen sulfide gas. Industrial sodium sulfide is pink, brownish red, and khaki due to impurities. Specific gravity, melting point, and boiling point also vary depending on the effects of impurities.

China's sodium sulfide originated in the 1930's. It was first started by a chemical plant in Dalian, Liaoning, and started small-scale production. From the 1980's to the mid 1990's, with the vigorous development of the international chemical industry, China's sodium sulfide industry has undergone a fundamental Changes, manufacturers and scale have increased dramatically, and development has been rapid. The area of baritite production, centered on Yuncheng City in Shanxi Province, has expanded rapidly to more than 10 provinces, cities and regions including Yunnan, Xinjiang, Inner Mongolia, Gansu, Qinghai, Ningxia, and Shaanxi. The country's annual production capacity soared from 420,000 tons in the late 1980s to 640,000 tons in the mid-1990s. The fastest output growth is in Inner Mongolia, Gansu, and Xinjiang in northwestern China. Inner Mongolia's production capacity has reached 200,000 tons, which has become China's largest production base of sodium sulfide products.

Various uses of sodium sulfide

1.It is used in the dye industry to produce sulfur dyes and is the raw material for sulfur blue and sulfur blue. The printing and dyeing industry is used as a dye aid to dissolve sulfur dyes. It is used in the tanning industry to hydrolyze and depilate raw hides, and it is also used to formulate sodium polysulfide to accelerate the soaking of dry skin to help soften. The paper industry is used as a cooking agent for paper. The textile industry is used as a mordant for the denitration and reduction of nitrates of man-made fibers, and for dyeing cotton fabrics. The pharmaceutical industry is used to produce antipyretics such as phenacetin. It is also used in the production of sodium thiosulfate, sodium sulfide, sodium polysulfide and the like.

2.Adding an appropriate amount of baritite to the alkaline etching solution of aluminum and alloy can obviously improve the quality of the etching surface, and it can also be used to remove alkali-soluble heavy metal impurities such as zinc in the alkaline etching solution.

3.sodium sulfide can also be used for the treatment of the conductive layer in direct electroplating. The purpose of forming a good conductive layer on the non-metal surface is to form colloidal palladium sulfide by reacting sodium sulfide with palladium.

4.Used as a corrosion inhibitor. It is also a raw material of sodium thiosulfate, sodium polysulfide, and sulfur dyes.

5.Used in the manufacture of sulfur dyes, leather depilatory agents, metal smelting, photography, rayon denitration, etc.

Notes on sodium sulfide

1.Emergency treatment: Isolate leaking contaminated areas and restrict access. It is recommended that emergency handlers wear dust masks (full face masks) and acid- and alkali-proof work clothes. Enter the scene from the upper wind. Small leaks: Avoid dust, collect with a clean shovel in a dry, clean, covered container. It can also be rinsed with a large amount of water and diluted into the waste water system. Large spills: Collected for recycling or transported to a waste disposal site for disposal.

2.Note on operation: Closed operation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety protective glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Away from fire and heat sources, smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid generating dust. Avoid contact with oxidants and acids. Handle lightly when handling to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.

3.Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The humidity in the warehouse is preferably not more than 85%. Packaging is sealed. It should be stored separately from oxidants and acids. Should not be stored for long, so as not to deteriorate. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with suitable materials to contain spills.

If you are interested in buying sodium sulfide, it is always right to learn more about it. If you are looking for a supplier of high quality sodium sulfide that can provide you with a reasonable price,Shaanxi Fuhua Chemical Co., Ltd.will provide you with the best products.

Shaanxi Fuhua Tading Co.,. Ltd.

Room 1610, Building A, Haixing City Square, Keji Road,High-tech. Zone, Xian City, Shaanxi, China


2nd Idustial Road East Zhuangi ldutialone Fuping

County, Shaanxi Province, China