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Zinc sulfate heptahydrate

Outline Uses Toxicity Waste battery preparation Production method
Zinc sulfate heptahydrate
Zinc sulfate heptahydrate structure
CAS No.
7446-20-0
Chemical Name:
Zinc sulfate heptahydrate
Synonyms
Goslarite;7446-20-0?;VasoClear A;Ophthazinc T;ZINC SULFATE;ZINC VITRIOL;ZINCI SULFAS;White Vitrol;SALT OF VITRIOL;ZINC SULFATE GRAN
CBNumber:
CB8854197
Molecular Formula:
H14O11SZn
Formula Weight:
287.56
MOL File:
7446-20-0.mol

Zinc sulfate heptahydrate Properties

Melting point:
100 °C
Density 
1.957
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: soluble100mg/mL, clear, colorless
form 
Solid
Specific Gravity
1.97
color 
White
PH
4-6 (50g/l, H2O, 20℃)
Water Solubility 
960 g/L
Sensitive 
Hygroscopic
Merck 
14,10159
Stability:
Stable. Incompatible with strong oxidizing agents. Hygroscopic - protect from moisture.
CAS DataBase Reference
7446-20-0(CAS DataBase Reference)
FDA 21 CFR
182.8997; 582.5997; 182.90; 310.545; 558.258; 582.80
Substances Added to Food (formerly EAFUS)
ZINC SULFATE
SCOGS (Select Committee on GRAS Substances)
Zinc sulfate
EWG's Food Scores
3-4
FDA UNII
N57JI2K7WP
NCI Dictionary of Cancer Terms
zinc sulfate
NCI Drug Dictionary
zinc sulfate
ATC code
A12CB01,B05XA18
EPA Substance Registry System
Sulfuric acid, zinc salt (1:1), heptahydrate (7446-20-0)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS05,GHS07,GHS09
Signal word  Danger
Hazard statements  H400-H302-H318-H410
Precautionary statements  P280-P301+P312+P330-P305+P351+P338+P310-P273-P305+P351+P338-P501-P391-P264-P280i-P301+P312a-P310a-P501a
Hazard Codes  Xn,N,Xi
Risk Statements  22-41-50/53-36/38
Safety Statements  22-26-39-46-60-61-25
RIDADR  UN 3077 9/PG 3
WGK Germany  3
RTECS  ZH5300000
TSCA  Yes
HazardClass  9
PackingGroup  III
HS Code  28332600
Toxicity LD50 orally in Rabbit: 1260 mg/kg
NFPA 704
0
2 0

Zinc sulfate heptahydrate price More Price(38)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 204986 Zinc sulfate heptahydrate 99.995% trace metals basis 7446-20-0 10g $62.5 2021-03-22 Buy
Sigma-Aldrich 1.08883 Zinc sulfate heptahydrate for analysis EMSURE? ACS,ISO,Reag. Ph Eur 7446-20-0 500 g $83.9 2021-03-22 Buy
Sigma-Aldrich 1.08881 Zinc sulfate heptahydrate EMPROVE? ESSENTIAL Ph Eur,BP,JP,USP,FCC 7446-20-0 1 kg $88.7 2021-03-22 Buy
Sigma-Aldrich 1.08883 Zinc sulfate heptahydrate for analysis EMSURE? ACS,ISO,Reag. Ph Eur 7446-20-0 1 kg $131.35 2021-03-22 Buy
Sigma-Aldrich 1724769 Zinc sulfate United States Pharmacopeia (USP) Reference Standard 7446-20-0 1g $371 2021-03-22 Buy

Zinc sulfate heptahydrate Chemical Properties,Uses,Production

Outline

At room temperature, zinc sulfate heptahydrate is white particles or powder, it is orthorhombic crystal, it has convergence, it is common astringent, it will weathering in dry air. When be heated 30℃, it can lose a part of crystal water, at 100℃ it loses six crystal water molecules, it loses seven crystal water molecules at 280℃, it decomposes into zinc oxide and sulfur trioxide at 767℃. It is soluble in water, slightly soluble in ethanol and glycerol. It requires confined preservation. It is mainly used as raw material for the production of zinc, barium and other zinc saline, it is also important auxiliary raw material for the viscose fiber and vinylon fiber, it can be also used as mordant dyeing, leather and wood preservative, glue clarifying and preserving agents, medical emetic and fungicides, it can be used for trace element fertilizers on agriculture.

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.

Toxicity

Referrence zinc sulfate monohydrate.

Waste battery preparation

The zinc skin of battery is peeled off and washed, then it is put into a beaker, it is cut into small pieces, add water, add concentrated sulfuric acid, properly be heated. If zinc skin dissolves completely, then adds zinc skin, zinc skin is generally control slight excess, this is better handled. Zinc sulfate solution is heated to evaporate, zinc sulfate heptahydrate is crystallized out, it is dried at 120℃, and then dried finished product can be obtained.

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℃.

Chemical Properties

Colorless crystals, small needles, or granular, crystalline powder; without odor; astringent, metallic taste. Efflorescent in air. Solutions acid to litmus. Loses 7H2O at 280C. Soluble in water and glycerol; insoluble in alcohol.

Uses

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.

Uses

Preparation of complexometric titrant

Uses

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.

Uses

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.

Definition

ChEBI: A hydrate that is the heptahydrate form of zinc sulfate.

brand name

Verazinc (Forest).

Agricultural Uses

Zinc sulphate heptahydrate (ZnSO4?7H2O), also called white vitriol, is the most common form of zinc sulphate.
It forms zinc sulphate monohydrate above 70°C and anhydrous salt at 280°C, and is used as a mordant and a styptic (to check bleeding).

Industrial uses

Zinc sulfate (ZnSO4·7H2O) is a white powder, very soluble in water (i.e. 37% at 20 °C). Zinc sulfate is primarily used in base-metal flotation as a depressant for sphalerite. Zinc sulfate has been used to depress talc in by-product molybdenum circuit.

Safety Profile

Human poison by an unspecified route. Poison experimentally by subcutaneous, intravenous, and intraperitoneal routes. Moderately toxic by ingestion. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and ZnO. See also ZINC SULFATE.

Purification Methods

Crystallise it from aqueous EtOH or dilute H2SO4 below 39o when it forms the heptahydrate, and between 39o and 70o it forms the hexahydrate, and above 70o the monohydrate is stable. The anhydrous salt is obtained from the hydrates by heating at 280o or lower temperatures in a current of dry air. It decomposes to ZnO and SO2 at 767o. The solubility of the heptahydrate in H2O is 5.88% at 0o, 61.92% at 30o, 66.61% at 35o and 70.05% at 39o.

Zinc sulfate heptahydrate Preparation Products And Raw materials

Raw materials

Preparation Products


Zinc sulfate heptahydrate Suppliers

Global( 343)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Jiangsu Kolod Food Ingredients Co.,Ltd.
+8618805133257 +86-518-85110578 18805133257
+86-518-85110578 sales3257@jskolod.com China 129 60
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3623 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
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86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
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+8619930503282
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View Lastest Price from Zinc sulfate heptahydrate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-14 99% Zinc Sulphate Heptahydrate Znso4 7H2O
7446-20-0
US $3400.00 / Kg/Bag 1KG 22% 20tons Hebei Dongdu Import and Export Co. LTD
2021-10-14 22%Industrial Grade Heptahydrate Zinc Sulfate
7446-20-0
US $3400.00 / Kg/Bag 1KG 22% 20tons Hebei Dongdu Import and Export Co. LTD
2021-08-10 Zinc Sulfate Heptahydrate
7446-20-0
US $20.00 / KG 1KG 99 50ton Shijiazhuang tongyang Import and Export Co., LTD

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