EXTRACTION OF ACIDS BY ORGANIC SOLVENTS

Journal Article · Tue Mar 01 04:00:00 EST 1960 · Zhur. Neorg. Khim.

OSTI ID:4167047

Grinberg, A A; Lozhkina, G S

The distribution ccefficients of HNO/sub 3/, HClO/sub 4/, HCl, and HBr between water and the oxygen-containing solvents ethyl ether, isoamyl alcohol, and isoamyl acetate and between water and the non-oxygen-containing solvents benzene and carbon tetrachloride were found to decrease with decreasing concentration of acid. The explanation lies in the more complete ionization of the acid on dilution. Isoamyl alcohol was the most efficient extractant. HClO/ sub 4/ and HNO/sub 3/ extracted better than HCl and HBr. A salting agent such as NaNO/sub 3/ or Ca(NO/sub 3/)sub 2/ salts out nitric acid from the aqueous phase into isoamyl alcohol. However, an increasing acid concentration in the aqueous "salts out" the salting agent so that the saturated aqueous phase holds less salting agent. Hence, the distribution coefficient (K/sub D/) of the acid increases with decreasing acid concentration in the aqueous saturated with a salting agent since the aqueous phase can hold more salting agent. With decreasing concentration of salting agent at constant acidity, the K/sub D/ falls off. (TTT)

• Research Organization: Lomonosov Moscow State Univ.
• NSA Number: NSA-14-019038
• OSTI ID: 4167047
• Journal Information: Zhur. Neorg. Khim., Journal Name: Zhur. Neorg. Khim. Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ACETATES
ACIDS
ALCOHOLS
BENZENE
CALCIUM NITRATES
CARBON TETRACHLORIDE
CHEMISTRY
ETHERS
HYDROBROMIC ACID
IONIZATION
NITRIC ACID
ORGANIC COMPOUNDS
PERCHLORIC ACID
QUANTITY RATIO
SEPARATION PROCESSES
SODIUM NITRATES
SOLVENT EXTRACTION
SOLVENTS
WATER