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From Wikipedia

Monocalcium phosphate

Monocalcium phosphate is a chemical compound with the formula Ca(H2PO4)2. It is commonly found as the monohydrate, Ca(H2PO4)2·H2O.



Phosphorus is an essential nutrient and therefore is a common component of agricultural fertilizers. Tricalcium phosphate Ca3(PO4)2, a major component of phosphate rock such as phosphorite, apatite, and other phosphate minerals, is too insoluble to be an efficient fertilizer. Therefore it can be converted into the more soluble monocalcium phosphate, generally by the use of sulfuric acid H2SO4. The result is hydrated to turn the calcium sulfate into the dihydrategypsum and sold as superphosphate of lime. Alternately phosphate rock may be treated with phosphoric acid to produce a purer form of monocalcium phosphate and is sold as triple phosphate.


Superphosphate is a fertilizer produced by the action of concentrated sulfuric acid on powdered phosphate rock.

3 Ca3(PO4)2(s) + 6 H2SO4(aq) → 6 CaSO4(aq) + 3 Ca(H2PO4)2(aq)

"In 1840, Justus Von Liebig wrote, 'The crops on the field diminish or increase in exact proportion to the diminution or increase of the mineral substances conveyed to it in manure.' Von Liebig was the first to discover that phosphate of lime in bone meal could be rendered more readily available to plants by treatment with sulfuric acid. Sir John Bennett Lawes about the same time discovered that phosphate rock underwent the same reaction and could be used as a source ingredient. In the 1840s, scientists found that coprolites could be dissolved in sulfuric acid to produce what became known as superphosphate. Bennett Lawes was the first to manufacture superphosphate at his factory in Deptford, England in 1842."

A large market for superphosphate was created in the second half of the 20th century by the development of aerial topdressing in New Zealand which allowed superphosphate to be spread economically over large areas.

Superphosphate can be created naturally in large quantities by the action of guano, or bird feces, resulting in deposits around sea bird colonies which can be mined. The most famous mining site is the island of Nauru in the South Pacific from which much of the "soil" was mined, creating temporary wealth for the inhabitants.

Triple superphosphate

Triple superphosphate is a fertilizer produced by the action of concentrated phosphoric acid on ground phosphate rock.

Ca3(PO4)2(s) + 4 H3PO4(aq) → 3 Ca 2+(aq) + 6 H2PO41-(aq) → 3 Ca(H2PO4)2(aq)

The active ingredient of the product, monocalcium phosphate, is identical to that of superphosphate, but without the presence of calcium sulfate that is formed if sulfuric acid is used instead of phosphoric acid. The phosphorus content of triple superphosphate (17 - 23% P; 44 to 52% P2O5) is therefore greater than that of superphosphate (7 - 9.5% P; 16 to 22% P2O5). Triple superphosphate was the most common phosphate (P) fertilizer in the USA until the 1960s, when ammonium phosphates became more popular. It is produced in granular and nongranular form and is used both in fertilizer blends (with potassium and nitrogen fertilizers) and by itself.

Leavening agent

Calcium dihydrogen phosphate is also used in the food industry as a leavening agent to cause baked goods to rise. Because it is acidic, when combined with an alkali ingredient – commonly sodium bicarbonate (baking soda) or potassium bicarbonate– it reacts to produce carbon dioxide and a salt. The carbon dioxide gas is what leavens the baked good. When combined in a ready-made baking powder, the acid and alkali ingredients are included in the right proportions such that they will exactly neutralize each other and not significantly affect the overall pH of the product.

Glyceraldehyde 3-phosphate

Glyceraldehyde 3-phosphate, also known as triose phosphate or 3-phosphoglyceraldehyde and abbreviated as G3P, GADP, GAP, TP, GALP or PGAL, is a chemical compound that occurs as an intermediate in several central metabolic pathways of all organisms. It is a phosphate ester of the 3-carbon sugar glyceraldehyde and has chemical formulaC3H7O6P.

The CAS number of glyceraldehyde 3-phosphate is 142-10-9 and that of D-glyceraldehyde 3-phosphate (one of the two optical isomers of the compound and the one most often occurring in living organisms) is 591-57-1.

An intermediate in both glycolysis and gluconeogenesis


D-glyceraldehyde 3-phosphate is formed from the following three compounds in reversible reactions:

The numbering of the carbon atoms indicates the fate of the carbons according to their position in fructose 6-phosphate.

As a substrate

D-glyceraldehyde 3-phosphate is also of some importance since this is how glycerol (as DHAP) enters the glycolytic and gluconeogenetic pathways. Furthermore, it is a participant in and a product of the pentose phosphate pathway.

An intermediate in photosynthesis

During plant photosynthesis, 2 molecules of glycerate 3-phosphate (GP; also known as 3-phosphoglycerate) are produced by the first step of the light-independent reactions when ribulose 1,5-bisphosphate (RuBP) and carbon dioxide are catalysed by the rubisco enzyme. The GP is converted to D-glyceraldehyde 3-phosphate (G3P) using the energy in ATP and the reducing power of NADPH as part of the Calvin cycle. This returns ADP, phosphate ions Pi, and NADP+ to the light-dependent reactions of photosynthesis for their continued function. RuBP is regenerated for the Calvin cycle to continue.

G3P is generally considered the prime end-product of photosynthesis and it can be used as an immediate food nutrient, combined and rearranged to form monosaccharide sugars, such as glucose, which can be transported to other cells, or packaged for storage as insoluble polysaccharides such as starch.

Balance sheet

6 CO2 + 6 RuBP (+ energy from 12 ATP and 12 NADPH) → 12 G3P (3-carbon)

10 G3P (+ energy from 6 ATP) → 6 RuBP (ie starting material regenerated)

2 G3P→ glucose (6-carbon).

In tryptophan biosynthesis

Glyceraldehyde 3-phosphate occurs as a byproduct in the biosynthesis pathway of tryptophan, an essential amino acid that cannot be produced by the human body.

In thiamine biosynthesis

Glyceraldehyde 3-phosphate occurs as a reactant in the biosynthesis pathway of thiamine (Vitamin B1), another substance that cannot be produced by the human body.

From Yahoo Answers


Answers:Produces superphosphate, a mixture of calcium sulphate and calcium dihydrogen phosphate (monocalcium phosphate) Ca3(PO4)2 + 4 H2SO4 + 2 H2O 2 CaSO4 2H2O + Ca(H2PO4)2 H2O Above formula is from: http://en.wikipedia.org/wiki/Calcium_dihydrogen_phosphate

Question:I need the chemical formulas for the following. ASAP would be nice. Please help: Sodium aluminum phosphate Monocalcium phosphate Adipic acid Silicon dioxide Calcium sulfate Vatimin A palmitate Sodium diacetate Disodium inosinate Ascorbic acid Sodium citrate Malic acid potassium citrate

Answers:Na3Al(PO4)2 Ca(H2PO4)2 C6H10O4 SiO2 CaSO4 C36H60O2 NaC4H7O4 C10H11N2Na2O8P C6H8O6 NaH(C3H5O(COO)3) HO2CCH2CHOHCO2H C6H5K3O7

Question:Here is the chemical equation: barium acetate and potassium phosphate-> I need help with writing out the formulas and reactants and products and predict the names of the products. I also don't get how to write the ionic net reaction for the equation above.

Answers:Usually the ions just switch place. barium phosphate and potassium acetate. You need to check solubility tables to see which is insoluble. I am guessing barium phosphate. So all other ions will stay in solution and can be ignored. Net ionic refers to the ions which actually do something rather than stay in solution, like precipitate out or release as gas bubbles. Ba(CH3COO-)2 + K3PO4 --> KCH3COO + Ba3(PO4)2 3Ba+2(aq) + 2PO4-3(aq) --> Ba3(PO4)2(s) would be net ionic assuming I am correct with my guess as to which is insoluble.

Question:Does MSP come first then SAPP, or how are the two related? How is SAPP made?

Answers:Mono-sodium phosphate Process Monosodium phosphate is produced by reaction of purified feed ..grade phosphoric acid with a sodium source. Chemical formula NaH2PO4.nH2O Identification .....CAS/EINECS No: 7558-80-7/231-449-2 Process Monosodium phosphate is produced by reaction of purified feed ..grade phosphoric acid with a sodium source. Chemical characteristics (typical) Total phosphorus 24% Soluble phosphorus: in 2% citric acid 100% in neutral amm. Citrate >95% in water 95% Sodium 20% pH (1% solution) 6 Insoluble in HCl 0.2% Undesirable substances conform to the European Directives Physical properties (typical) Appearance granulated colour white Apparent density loose 1.1 kg/ dm3 tapped 1.2 kg/ dm3 Handling, storage, toxicity Handling avoid dust formation Storage in a dry place; slightly hygroscopic Shelf-life minimum 3 years Toxicity non toxic Specific advantages High phosphorus content Calcium free phosphorus source Highly palatable phosphorus source