Dynalene offers the following five propylene glycol-based coolants: Dynalene PG -50°F to 250°F Inhibited propylene glycol Dynalene PG is an inhibited technical-grade propylene glycol-based coolant used in industrial applications. It is blended with Dynalene's PE-1 inhibitor package for pH stability, inhibiting corrosion in steel, brass, copper,
For many heat-transfer applications it is necessary to use a heat-transfer fluid with lower freezing point than water. The most common antifreeze fluid - ethylene glycol - must not be used where there is a chance of leakage to potable water or food processing systems. In food processing systems the common heat-transfer fluid is based on propylene glycol.
Propylene Glycol. Contains DOWFROST™ heat transfer fluid. Freeze protection. is required if a system is going to be actively pumping fluid at the lowest ambient temperature and/or where there is no room in the system for expansion to accommodate an ice/slush formation.
Sep 11, 2017· Due to the similar appearance and the sweet taste, it is often difficult to understand the difference between propylene glycol and glycerin. But it is very important to recognize a sample of propylene glycol from a sample glycerin because of the toxic effects of propylene glycol. References: 1. Hendrickson, Kirstin. "Properties of Propylene .
The susceptibility of the test organisms to propylene glycol, glycerine, PEG 400, PEG 1000, and propylene glycol with PEG 400 was assessed using broth dilution assay, as minimum inhibitory concentration (MIC) can be readily converted to the minimum bactericidal concentration (MBC). Triplicates were performed for each of the standard strains.
Propylene Glycol Solution % by mass 0 10 20 30 40 50 60 by volume 0 10 19 29 40 50 60 Freezing Point Temperature ºF 32 26 18 7 -8 -29 -55 ºC 0 -3 -8 -14 -22 -34 -48 Specific gravity based on propylene glycol solutions with temperature 60°F. Specific Gravity is defined here:
Dynalene Propylene Glycol mixtures use either high-quality technical grade propylene glycol or food grade propylene glycol with or without corrosion inhibitors and additives to fit your process. The corrosion inhibitors cover a wide range of uses including the typical metals such as carbon steel and copper as well as aluminum at higher temperatures.
Properties of some particular solutions 4 As for other solutions, the freezing point refers to the first appearance of solid crystals when cooling the liquid solution, but this is not the end of the process; e.g. a salty solution like seawater starts to freeze at 1.9 −
Propylene glycol Count on us for your Propylene glycol needs It is fully hygroscopic and miscible with water, alcohols, esters, ketones, and amines, but exhibits limited miscibility with hydrocarbons.
Propylene glycol | C3H8O2 | CID 1030 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety .
toeofsolutionsofthe1:4soldiumsilicatefrom20°to80°Cwasalsostudied ThecLracCistics of thesecoolingcurves and a study of the hardnesses and structures produced suggestthatthese sodium silicate solutions would be useful
65% ethylene glycol. Propylene glycol, on the other hand, does not exhibit this decreasing and increasing freezing point curve. As propylene glycol is added to water, the freezing point decreases continuously until a 60% solution is achieved. Propylene glycol solutions containing 60- glycol will dramatically increase in viscosity at low
Propylene Glycol Fluid and Thermal Properties Matthew Alvarez- FNAL Originally written on 06/04/2010 for the first time INTRODUCTION Three of the DECAM cooling systems, monsoon crate, pf cage, and chiller cooling
Jul 03, 2018· Due to its hygroscopic properties propylene glycol aerosols act as condensation seeds in air for mist droplets from the ambient humidity. As a result of its solubilising and emulsifying properties, propylene glycol is used as a carrier substance and carrier solvent for colorants, antioxidation agents, emulsifiers and enzymes amongst other things.
Propylene glycol is a chemical that has physical and chemical properties that are similar to ethylene glycol, but it does not cause the same human health effects. Propylene glycol can be used in many of the same products that contain ethylene glycol. Propylene glycol has been identified in at least 5 of the 1,416 NPL sites. The information .
Typical Properties of DOWFROST Fluid† DOWFROST Heat Transfer Fluid Composition (% by weight) Propylene Glycol 96 Performance Additives 4 Color Colorless Specific Gravity 15/15°C (60/60°F) 1.050–1.060 pH of Solution (50% glycol) 9.0–10.0 Reserve Alkalinity (min.) 10.0 ml † Typical properties, not to be construed as specifications.
Polypropylene glycol. Monice M Fiume et. al Propylene glycol is an aliphatic alcohol that functions as a skin conditioning agent, viscosity decreasing agent, solvent, and fragrance ingredient in cosmetics. Tripropylene glycol functions as a humectant, antioxidant, and emulsion stabilizer. James E Hudson et. al Tissue engineering.
NOTE: Physical and Chemical Properties are based on a 96% solution of Propylene Glycol. Diluted concentrations of Propylene Glycol may have slightly different Properties. STABILITY/INSTABILITY: Thermally stable at recommended temperatures and pressures. CONDITIONS TO AVOID: Product can oxidize at elevated temperatures. Generation of gas
Apr 24, 2017· Propylene glycol can also be used as a solvent in the manufacture of oral, topical applications and injections for the pharmaceutical industry, because it is insoluble in water. It is added to food colorings and flavorings because of its sweet flavor combined with its solvent properties.
Mar 02, 2018· Propylene glycol is a substance commonly used as a food additive or ingredient in many cosmetic and hygiene products. The US and European food authorities have declared it …
Page 1 of 1. Technical Data. Propylene Glycol. Viscosity of Aqueous Propylene Glycol Solutions. Viscosity Chart. Viscosity of Aqueous Propylene Glycol Solutions. Source: Glycols. Curme and Johnston, Reinhold Publishing Corp., New York (1952).
Glycol Percentage Relative to Freeze Point Propylene Glycol .ClenAir Freezing Point Propylene Glycol Solution (%) 0% 10% 20% 30% 40% 50% 60% Glycometer™ Temperature (F)° 32° 26° 18° 7° (-8°) (-29°) (-55°) Ethylene Glycol
Glycol Solutions. Fully Inhibited Glycol based solutions designed for applications where no incidental contact with humans, food, or beverage products could occur. The fluid is manufactured using only new, glycol. It is recommended for use in all closed primary and secondary heating, cooling, and refrigeration systems.
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).
The density, viscosity, and thermal conductivity of propylene glycol + water, dipropylene glycol + water, and tripropylene glycol + water mixtures were measured at temperatures ranging from 290 K to 460 K and concentrations ranging from 25 mol % glycol to 100 mol % glycol.
Propylene glycol was effective against three organisms namely S. mutans E. faecalis and E. coli and its bactericidal activity was at 50%, 25% and 50% respectively. PEG 1000 was effective against S. mutans and E. coli at 25%. Hence propylene glycol was effective on more number of organisms of which E. faecalis is a known resistant species.
Alternative Titles: 1,2-propanediol, propanediol. In antifreeze …such as ethylene glycol or propylene glycol commonly added to water in automobile cooling systems prevent damage to radiators. Additives to prevent freezing of water in gasoline (e.g., Drygas) usually contain methanol or isopropanol.
Because propylene glycol is both flammable and water soluble, water is an inappropriate fire-containment method; dry non-flammable powder is recommended for fire fighting. A significant and important chemical property of propylene glycol is that when it mixes with water, it disturbs the formation of ice, which leads to its antifreeze utility.
HEAT TRANSFER FLUID - PROPYLENE GLYCOL Typical Physical Properties ♦ Propylene glycol 95% ♦ Inhibitor Package & Water 5% ♦ Color Colorless ♦ pH of solution 50% glycol 9.0 – 10.5 ♦ Specific gravity 60/60 °F 1.050 – 1.060 ♦ Reserve Alkalinity (min) 11.0 ml 1) Freezing and Boiling points %Glycol by Volume Freezing
Propylene Glycol Solution (%) by mass 0 10 20 30 40 50 60 by volume0 10 20 29 40 50 60 Specific Gravity - SG - 1) 1.000 1.008 1.017 1.026 1.034 1.041 1.046 1) Specific gravity based on propylene glycol solutions with temperature 60oF. Boiling Points of Propylene Glycol Solutions Boiling points of propylene glycol Boiling Point Propylene Glycol .
Dow glycol-based fluids include inhibited ethylene glycol (EG) and propylene glycol (PG)-based fluids. The inhibitors in Dow glycol-fluids are specially formulated to protect system components against corrosion and scaling that can increase maintenance and operating expense, reduce system efficiency and even lead to system failure.