Zinc sulfate heptahydrate

Base Information

• Chemical Name: Zinc sulfate heptahydrate
• CAS No.: 7446-20-0
• Molecular Formula: H14O11SZn
• Molecular Weight: 287.58
• Hs Code.: 28332600
• Mol file: 7446-20-0.mol

Synonyms:Whitevitriol;Zinc sulfate (ZnSO4) heptahydrate;Sulfuric acid, zincsalt (1:1), heptahydrate (8CI,9CI);Zincvitriol;

Chemical Property of Zinc sulfate heptahydrate

Chemical Property:

• Appearance/Colour: colourless to white crystalline solid
• Vapor Pressure: 3.35E-05mmHg at 25°C
• Melting Point: 100 °C
• Boiling Point: 330 °C at 760 mmHg
• PSA: 153.25000
• Density: 1.957 g/cm³
• LogP: -0.70980
• Storage Temp.: Store at RT.
• Sensitive.: Hygroscopic
• Solubility.: H2O: soluble100mg/mL, clear, colorless
• Water Solubility.: 960 g/L

Purity/Quality:

99%-108.7%, ^*data from raw suppliers

Zinc sulfate heptahydrate ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn,N,Xi
• Hazard Codes: Xn,N,Xi
• Statements: 22-41-50/53-36/38
• Safety Statements: 22-26-39-46-60-61-25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Uses: (1) Zinc sulfate heptahydrate can be used as mordant dyeing, wood preservatives, paper bleaching agent, it can be also used in medicine, synthetic fibers, electrolysis, electroplating, pesticides and production of zinc, etc. (2) It can be used for the preparation of zinc medicine, astringents, etc. (3) It can be used as mordant, wood preservatives, bleach paper industry, it is also used in medicine, synthetic fibers, electrolysis, electroplating, pesticides and production of zinc, etc. (4) Zinc sulfate is zinc supplement of dietary, the component of many enzymes, proteins, such as ribose animals involved in carbohydrate and fat metabolism, and it can catalyze interconversion of pyruvate and lactate, it can promote growth. Zinc deficiency can lead to incomplete keratosis, stunted growth and deterioration of the hair, and it can affect animal reproductive function. (5) Zinc sulfate is allowed to use in food supplements of zinc. China allows to use it in salt, the used of amount is 500mg /kg; in foods for infants and young children is 113~318mg/kg; in dairy products is 130~250mg/kg; in grains and their products is 80~160rag/kg; in liquid and drink milk drinks is 22.5~44mg/kg. (6) It is mainly used for man-made fibers coagulating liquid. In printing and dyeing industry, it is used as mordant, salt-stained blue Lamine alkali agent. It is main raw material of manufacturing inorganic pigments (e.g. lithopone), other zinc salts (e.g. zinc stearate, basic zinc carbonate) and zinc-containing catalyst. It is used as wood preservatives and leather, bone glue clarifying and preserving agents. In pharmaceutical industry, it is used as emetic. It can also be used to prevent diseases and fruit tree nurseries and cable manufacturing zinc fertilizer and so on. It can be used as nutritional supplements (zinc enhancer) and the like in food-grade product. (7) It can be used as analytical reagents, mordant and the phosphor matrix. zinc sulfate is a cosmetic astringent and biocide produced through the reaction of sulfuric acid with zinc. It can cause irritation to the skin and mucous membranes, and may cause an allergic reaction. Preparation of complexometric titrant As mordant in calico-printing; preserving wood and skins; with hypochlorite for bleaching paper; manufacture of lithopone and other zinc salts; clarifying glue; electrodepositing Zn; also as reagent in analytical chemistry. Zinc sulfate (ZnSO4?7H2O) is also known as zinc vitriol or white copper. In addition to being used to make rayon, zinc sulfate is used as a wood preservative, a dietary supplement, an animal feed, and as a mordant to prevent dyes from running in printed textiles. It can also be used to stanch bleeding. Zinc sulfate heptahydrate is widely used as a coagulant in the production of rayon. It finds an application in the manufacturing of calico printing, wood preservation and lithopone. It is the source of zinc which is supplied in animal feeds, fertilizers and agricultural sprays. It is utilized as electrolytes for zinc plating and surface treating agents. It is also used as a mordant in dyeing, preservative for skin and leather and in medicine as an astringent and emetic.
• Production method: (1) Synthesis method: 18% sulfuric acid was added into to dissolve the dross of dilute solution in reactor, with stirring zinc oxide (or zinc raw material) was added to adjust slurry. Then adds sulfuric acid, the reaction occurs in a stirred acidproof reactor, Ph is controlled at 5.1, it is the end of the reaction, concentration is about 38°Bé. The reaction is filtered, it is heated to 80℃, the addition of zinc to displace copper, cadmium, nickel, then it is filtered, and the filtrate is heated to above 80℃, potassium permanganate (or bleach) is added and heated to boil, the impurity of iron oxide, manganese is oxidated, it is filtered and the filtrate was clarified, then it is evaporated to 49~52 ° Bé, it goes through cooling and crystallization, centrifugal dewatering, drying to obtain zinc sulfate heptahydrate. its ZnO + H2SO4 → ZnSO4 + H2O (2) Zinc material is slowly added into diluted sulfuric acid which the relative density is 1.16, temperature is controlled at 80~90℃, after about 2h, Ph value of solution is 5.1 to 5.4, after reaction, the relative density of solution is about 1.35; and then adds small amount of high manganese bleach or potassium, iron, manganese oxide precipitation, filtration spoil the ,filtrate is put into the replacement bucket, then adds small amount of zinc powder and it is stirred at 75~90℃ for 40~50min, replacement of heavy metals copper, lead, cadmium and other impurities. After filtration, the filtrate is oxidated by small amount of bleach or potassium permanganate, further removes small amounts of iron, manganese, and it is filtered to get zinc sulfate solution which relative density is 1.28 to 1.32. This solution is cooled in the crystallizer kettle crystalline for 2~3d, after fractional crystallization, dry finished product is obtained which spin-dried at 40~50℃. ZnO + H2SO4 → ZnSO4 + H2O (3) Zinc material is slowly added into diluted sulfuric acid which the relative density is 1.16, temperature is controlled at 80~90℃, after about 2h, Ph value of solution is 5.1 to 5.4, after reaction, the relative density of solution is about 1.35; and then adds small amount of high manganese bleach or potassium, iron, manganese oxide precipitation, filtration spoil the ,filtrate is put into the replacement bucket, then adds small amount of zinc powder and it is stirred at 75~90℃ for 40~50min, replacement of heavy metals copper, lead, cadmium and other impurities. After filtration, the filtrate is oxidated by small amount of bleach or potassium permanganate, further removes small amounts of iron, manganese, and it is filtered to get zinc sulfate solution which relative density is 1.28 to 1.32. This solution is cooled in the crystallizer kettle crystalline for 2~3d, after fractional crystallization, dry finished product is obtained which spin-dried at 40~50℃.