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Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid. It is almost odorless and has a faintly sweet taste. Its chemical formula is CH 3 CH(OH)CH 2 OH. As it contains two alcohol groups, it is classified as a diol. An aliphatic diol may also be called a glycol.
RC(O)CH 2 CH 2 OH + H 2 → RCH(OH)CH 2 CH 2 OH. 2,2-Disubstituted propane-1,3-diols are prepared in this way. Examples include 2-methyl-2-propyl-1,3-propanediol and neopentyl glycol. 1,3-Diols can be prepared by hydration of α,β-unsaturated ketones and aldehydes. The resulting keto-alcohol is hydrogenated.
Propanediol may refer to any of four isomeric organic chemical compounds: Non-geminal diols (glycols) 1,2-Propanediol, a.k.a. propylene glycol, a vicinal diol;
The molecular formula C 3 H 8 O 2 may refer to: Dimethoxymethane; 2-Methoxyethanol; Propanediol. 1,2-Propanediol (propylene glycol), a vicinal diol; 1,3-Propanediol (trimethylene glycol) 1,1-Propanediol (geminal diol) 2,2-Propanediol (geminal diol)
13537-16-1 F 2 O 2: perfluoroperoxide: 7783-44-0 F 2 O 2 S: sulfuryl fluoride: 2699-79-8 F 2 O 2 W: tungsten difluoride dioxide: 14118-73-1 F 2 O 5 S 3: peroxydisulfuryl difluoride: F 2 P: phosphorus difluoride: 13873-52-4 F 2 Pb: lead difluoride: 7783-46-2 F 2 Pt: platinum difluoride: 18820-56-9 F 2 Pu: plutonium difluoride: 20882-15-9 F 2 S ...
The systematic name of this enzyme class is propane-1,2-diol:NADP + oxidoreductase. Other names in common use include lactaldehyde (reduced nicotinamide adenine dinucleotide phosphate) , reductase , NADP + -1,2-propanediol dehydrogenase , propanediol dehydrogenase , 1,2-propanediol:NADP + oxidoreductase , and lactaldehyde reductase (NADPH) .
This page was last edited on 26 July 2006, at 18:31 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
CH 3 CHCH 2 O + CO 2 → CH 3 C 2 H 3 O 2 CO. The corresponding reaction of 1,2-propanediol with phosgene is complex, yielding not only propylene carbonate but also oligomeric products. Propylene carbonate can also be synthesized from urea and propylene glycol over zinc acetate. [6]