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Esterifications of phosphoric acid with alcohols proceed less readily than the more common carboxylic acid esterifications, with the reactions rarely proceeding much further than the phosphate mono-ester. The reaction requires high temperatures, under which the phosphoric acid can dehydrate to form poly-phosphoric acids.
PhilPhos was established on June 6, 1980 by the National Development Company, a corporate investment arm by the Philippine government. [2] The following year the construction of the Philphos fertilizer plant in Leyte, which was contracted by four companies, began and was completed in 1984. The plant became operational in 1987. [3]
Triphenyl phosphate (TPhP) is the chemical compound with the formula OP(OC 6 H 5) 3. It is the simplest aromatic organophosphate. This colourless solid is the ester (triester) of phosphoric acid and phenol. It is used as a plasticizer and a fire retardant in a wide variety of settings and products. [3]
Polyphosphates arise by polymerization of phosphoric acid derivatives. The process begins with two phosphate units coming together in a condensation reaction. 2 H(PO 4) 2− ⇌ (P 2 O 7) 4− + H 2 O. The condensation is shown as an equilibrium because the reverse reaction, hydrolysis, is also possible.
Compared to phosphate extractants, amines are more selective for uranium, extract the uranium faster, and are easily stripped with a wider variety of reagents. However, the phosphates are more tolerant of solids in the feed solution and show faster phase separation.
An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.
Trixylyl phosphate (TXP) is an aromatic phosphate ester. It was historically used as a flame retardant for acetate plastics (cellulose nitrate and cellulose acetate) and PVC. It also saw significant use as a fire-resistant hydraulic fluid. Trixylyl phosphate is now banned or restricted in several jurisdictions, due to its poor safety profile.
Pages in category "Phosphate esters" The following 76 pages are in this category, out of 76 total. This list may not reflect recent changes. 0–9.