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Calcium Suplhate/anhydrite Gypsum

Supplier From United Arab Emirates
Oct-12-21

Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of lanhydrite (the anhydrous form), it is used as a desiccant. One particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsum.It has many uses in industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water.
The main use of calcium sulfate is to produce plaster of Paris and stucco. These applications exploit the fact that calcium sulfate which has been powdered and calcined forms a moldable paste upon hydration and hardens as crystalline calcium sulfate dihydrate. It is also convenient that calcium sulfate is poorly soluble in water and does not readily dissolve in contact with water after its solidification.

Price and Minimum Quantity

Price: Negotiable
MOQ: Not Specified

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Calcium sulfate, a chemical compound with the formula CaSO4, exists in various forms, but the two most common ones are gypsum (calcium sulfate dihydrate) and anhydrite (calcium sulfate anhydrous). Gypsum is a soft, white mineral often used in construction and agriculture. It is a key ingredient in plasterboard, where it provides fire resistance and soundproofing. In agriculture, gypsum is employed to improve soil structure and nutrient retention. Anhydrite, on the other hand, is a denser, less water-absorbent form of calcium sulfate and is used in industrial processes, including cement production. Both forms of calcium sulfate have distinct properties that make them valuable in a range of applications, from building materials to industrial chemistry.
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My Dear
good day. good work.
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MOQ: 27  Metric Tonnes
Supplier From North York, Ontario, Canada
 
Calcium Polysulfide Solution is used mainly as a fungicide and fertilizer for the agriculture industry, to control wide range of fungal and other plant diseases in orchards, field crops and horticulture crops; it can also be used in various treatment systems as a metal precipitating agent. Calcium Polysulfide Solution effectively stabilizes and reduces soluble metals.
Sales Specifications

Appearance: Clear, to red orange liquid
Assay:24.0-29.0%
Odor:Slight H2S odor
Density:1.25-1.29 @ 25�°C
Treatment Notes

Arsenic: Acid medium only forms various arsenic sulfides; pH>7; arsenic-sulfur compound are insoluble
Lead: Wide Range (pH: 4-9); forms lead sulfide
Copper: Close to neutral (Optimal pH: 5â??7); forms copper sulfide
Zinc: Wide range (pH: 4-9); forms Zinc sulfide
Cadmium: Wide range (pH: 4-9); forms cadmium sulfide
Molybdenum: Wide range (pH: 4-9); forms molybdenum sulfide
Uranium:Wide range (pH: 4-9); forms uranium sulfide
Cyanide: Chemical Conversion produces Thiocyanate*

*Thiocyanate can be bio-treated, or it can be treated with lime, producing calcium carbonate, gypsum and ammonia. Chromium (Cr VI) can be treated with calcium polysulfide, and the Cr(VI) is reduced to Cr (III), which is then precipitated as chromium hydroxide.

While the list above indicates effective treatment may be obtained with system pH near 4.0, TKI has found that product is most stable in systems with pH greater than 5.0, to avoid potential generation of H2S.
Packing

220 gallon (2,809 lbs) tote or 5,000 gallon (53,000 lbs) tank of truck
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Supplier From North York, Ontario, Canada
 
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Sales Specification

Appearance: Yellow Brown Powder
Ph: 8.67
Dry Matters: 96.4 %
Water-Insoluble: 0.85 %
Lignosulfonate: 61.00 %
Reducing Sugar: 5.4 %
Sulfate: 2.7 %
Calcium & Magnesium: 0.38 %
Moisture: 6.0 %

Packing

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