Cyanamid suggests DIPROPIONITRILES as selective solvents
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Cyanamid suggests D1Ρ RΟ Ρ I ON I T R I LES as selective solvents M'-OXYDIPROPIONITRILE β,^'- ΤΗ lODIPROPIONITRILE & # · IMINODtPRCmiONITRILE UNUSUAL SOLVENT PROPERTIES. The dipropionitriles are excellent solvents for most organic compounds other than ali- phatic hydrocarbons with which they are immiscible. Their ability to act as selective solvents permits the separation of many mixtures of compounds which are difficult or impossible to separate by other methods. SELECTIVITY. The selectivity of the di- propionitriles in many separations is many -times that of known selective sol- vents. IV example, a single extraction separates benzene of better than 90% purity from a mixture with heptane. The COMPAAIV ahilitv of these solvents to differentiate between minor variations in structure is demonstrated by the separation of mono- methylaniline and dimethylaniline. Two hundred theoretical plates would be re- quired to effect separation by distillation while only a six-stage extraction is re- quired to partition the mixture between heptane and β,β'-oxydipropionitrile. SOLVENT RECOVERY. Extractive meth- ods may also be used for solvent re- covery. Among those developed for the recovery of /3,/3'-oxydipropionitrile from extract solutions is that of a hot water extraction based on the low solubility of this compound in cold water and com- plete miscibility in hot water. SUGGESTED USES. The data presented in our bulletin may suggest a use to you in your separation problems. It is suggested that their use be investigated in the puri- fication of hydrocarbons and the refining of tall oil, vegetable oils, and wood rosins. AVAILABILITY. The dipropionitriles are available in trial lot quantities. Λ\ e sug- gest that our data and a sample" of β,β'- oxydipropionitrile be obtained for pre- liminary evaluation. We shall also be glad to supply samples of β,/3 ; - iminodi- propionitrile and β.β'- thiodipropionitrile. SAMPLE AND TECHNICAL DATA American Cyanamid Company Section SO, New Product Development Dept. 30 Rockefeller Plaza, New York 20, Ν. Υ. Gentlemen : • Send New Product Bulletin No. 14 • Send a sample of $,&'-Oxydit)ropwriitrile Name Posit io?i_ Company _ Address VOLUME 2 8, NO. 16 . APRIL 17, 1950 1287 A-MEn/ÏCA-M 'iufaà^
Transcript of Cyanamid suggests DIPROPIONITRILES as selective solvents
Cyanamid suggests D1Ρ RΟ ΡI ON ITRI LES as selective solvents
M'-OXYDIPROPIONITRILE
β,^'- ΤΗ lODIPROPIONITRILE
& # · IMINODtPRCmiONITRILE
UNUSUAL SOLVENT PROPERTIES. The dipropionitriles are excellent solvents for most organic compounds other than aliphatic hydrocarbons with which they are immiscible. Their ability to act as selective solvents permits the separation of m a n y mixtures of compounds which are difficult or impossible to separate by other methods.
SELECTIVITY. The selectivity of the dipropionitriles in many separations is many -times that of known selective solvents. IV example, a single extraction separates benzene of better than 9 0 % purity from a mixture with heptane. T h e
COMPAAIV
ahilitv of these solvents to differentiate between minor variations in structure is demonstrated b y the separation of mono-methylaniline and dimethylaniline. T w o hundred theoretical plates would be required to effect separation by distillation while only a six-stage extraction is required to partition the mixture between heptane and β,β'-oxydipropionitrile.
SOLVENT RECOVERY. Extractive methods m a y also be used for solvent recovery. Among those developed for the recovery of /3,/3'-oxydipropionitrile from extract solutions is that of a hot water extraction based on the low solubility of
this compound in cold water a n d complete miscibility in hot water.
SUGGESTED USES. T h e data presented in our bulletin may suggest a use t o you in your separation problems. I t is suggested that their use be invest igated in t h e purification of hydrocarbons a n d the refining of tall oil, vegetable oils, a n d wood rosins.
AVAILABILITY. The dipropionitriles are available in trial lot quantities. Λ\ e suggest that our data and a sample" of β,β'-oxydipropionitrile be obtained for preliminary evaluation. We shall also be glad to supply samples of β,/3;- iminodi-propionitrile and β.β'- thiodipropionitrile.
SAMPLE AND TECHNICAL DATA American Cyanamid Company Section SO, New Product Development Dept. 30 Rockefeller Plaza, New York 20, Ν . Υ.
Gentlemen : • Send New Product Bulletin No. 14 • Send a sample of $,&'-Oxydit)ropwriitrile
Name
Posit io?i_
Company _
Address
V O L U M E 2 8, N O . 1 6 . A P R I L 1 7 , 1 9 5 0 1287
A-MEn/ÏCA-M
'iufaà^
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