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2. Calcium sulfate - Wikipedia

   en.wikipedia.org/wiki/Calcium_sulfate

   Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO 4 and related hydrates. In the form of γ- anhydrite (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 .

3. Phosphogypsum - Wikipedia

   en.wikipedia.org/wiki/Phosphogypsum

   Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer, particularly phosphoric acid, from phosphate rock. It is mainly composed of gypsum (CaSO 4 ·2H 2 O).

4. Gypsum - Wikipedia

   en.wikipedia.org/wiki/Gypsum

   Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.

5. Prices of chemical elements - Wikipedia

   en.wikipedia.org/wiki/Prices_of_chemical_elements

   In the form of chemical-grade barite (barium sulfate) exported from China to United States. Price per barium contained, includes cost, insurance, and freight. Barium sulfate is the primary feedstock for production of barium chemicals. [50] 57: La: Lanthanum: 6.145: 39 (1.08 × 10 18 kg) 4.78 – 4.92: 29.4 – 30.3: 2020: SMM [51] [d] Min. 99% ...

6. Labeling of fertilizer - Wikipedia

   en.wikipedia.org/wiki/Labeling_of_fertilizer

   The additional numbers are similarly reported in the oxide mass fraction form. For example, a Polish fertilizer labeled "NPK (Ca,S) 4-12-12 (14-29)" has an equivalent of 14% soluble calcium oxide and 29% total sulfur trioxide. [6]

7. Calcium formate - Wikipedia

   en.wikipedia.org/wiki/Calcium_formate

   Calcium formate is used within EU as an animal feed preservative. It acidifies the feed thus preventing microbe growth and increasing shelf life. About 15 g of calcium formate addition per kg of feed lowers its pH by one. 15 g/kg is the maximum recommended feed concentration within EU – this level is thought to be safe for pigs, chickens ...