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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.
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;
Examples include ethane-1,2-diol or ethylene glycol HO−(CH 2) 2 −OH, a common ingredient of antifreeze products. Another example is propane-1,2-diol, or alpha propylene glycol, HO−CH 2 −CH(OH)−CH 3, used in the food and medicine industry, as well as a relatively non-poisonous antifreeze product.
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 ...
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]
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In enzymology, a lactaldehyde reductase (NADPH) (EC 1.1.1.55) is an enzyme that catalyzes the chemical reaction. propane-1,2-diol + NADP + L-lactaldehyde + NADPH + H +. Thus, the two substrates of this enzyme are 1,2-propanediol and NADP +, whereas its 3 products are L-lactaldehyde, NADPH, and H +.