WebPhosphoric acid dibutyl ester. Constituent 3. Reference substance name: pyrophosphoric acid, butyl esters Molecular formula: C4H12P2O7 to C16H36P2O7 IUPAC Name: pyrophosphoric acid, butyl esters. Constituent 4. Reference substance name: Orthophosphoric acid EC Number: 231-633-2 EC Name: Orthophosphoric acid CAS … WebJul 25, 2002 · The development of a process for the recovery of a mixed rare earth oxide from calcium sulphate sludges obtained in the manufacture of phosphoric acid from a South African apatite ore is described. The leaching of the rare earth values from the sludges by dilute nitric acid is considerably enhanced by the addition of calcium nitrate to …
dibutyl carbitol - ChemBK
WebDec 4, 1998 · The concentrations in solution are approximately 6 g/L U and about 0.1 M nitric acid. Residual tributylphosphate in the solutions has slowly hydrolyzed to form … WebFeb 15, 2007 · Highly enriched dibutyl phosphoric acid, a relatively strong acid with a pKa (acid dissociation constant) of about one, forms insoluble compounds with U and other … siwigo connexion
IBAMA
WebDibutyl phosphoric acid, DBPA, constitutes about 85% of the acid. Radiolysis of TBP also results in the conversion of about 0.9 molecules of TBP to a polymer per 100 ev of energy absorbed. Uranium extraction-stripping tests with an 8 stage spinner column have shown that more » one mole of uranium is retained in the organic phase during the ... WebFeb 15, 2007 · Highly enriched dibutyl phosphoric acid, a relatively strong acid with a pKa (acid dissociation constant) of about one, forms insoluble compounds with U and other actinides in acid solutions. Accumulation of solids in these storage tanks presents a criticality hazard and must be avoided. WebWHICH CONTAINS DIBUTYL PHOSPHATE-PLUTONIUM STABLE COMPLEXES [75] Inventors: Wilhelm Ochsenfeld; Helmut Schmieder, both of Karlsruhe, Germany ... this quantity is increased bound to dialkyl phosphoric acid is best stripped from to some 200 mg dbp/1. in a two-phase mixture of the the organic solution by means of U(IV) nitrate. This pegasus scheme police essex