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Infobox references. 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 classed as a diol. An aliphatic diol may also be called a glycol.
Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 ... Ethylene glycol: 1.11 197.3 2.26 −12.9 –3.11 K b & K f [1] Formic acid: 101.0 ...
The main component of deicing fluid is a freezing point depressant (FPD), usually propylene glycol or ethylene glycol. Other ingredients vary depending on the manufacturer, but the exact composition of a particular brand of fluid is generally held as confidential proprietary information.
Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound (a vicinal diol [7]) with the formula (CH2OH)2. It is mainly used for two purposes: as a raw material in the manufacture of polyester fibers and for antifreeze formulations. It is an odorless, colorless, flammable, viscous liquid.
See also "Typical Freezing and Boiling Points of Aqueous Solutions of DOWTHERM SR ... Vapor–liquid equilibrium for ethylene glycol/water [3] P = 760 mmHg BP temp ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
When an aqueous solution of propylene glycol in a cooling or heating system develops a reddish or black color, this indicates that iron in the system is corroding significantly. In the absence of inhibitors, propylene glycol can react with oxygen and metal ions, generating various compounds including organic acids (e.g., formic, oxalic, acetic).
Signs of a functional freeze. Some signs you're experiencing a functional freeze include: You are outwardly functioning but feel frozen and lack motivation to accomplish simple tasks, especially ...
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