December 2004. ethelyne or propelyne cause the premixed "cryo-tech" stuff from herculese with PG has no warnings to that effect on the bottle . Ideally u should have 7ml alcohol to 3 ml PG, or 9 ml alcohol to 1ml DPG. Ethylene Glycol: Ethylene glycol is mainly used in antifreeze formulations and as a raw material in the manufacturing of polyesters such as polyethylene terephthalate (PET) in plastic industry. Although both propylene glycol and ethylene glycol have a large number of applications across a variety of industries and uses including cosmetics and preservatives (propylene glycol) and within the manufacture of resins, inks and polyethylene terephthalate (ethylene glycol) both have a common use within antifreeze and coolant mixes. Or perhaps it could be approximately 30% Ethylene Glycol. I know not to mix it, supposed to crud up or something. In the refractometer field of view at the right you can see an area of grey scale and an area of white. 0. Food Industry; Another testament to the non-toxic nature of PG is its use in the food industry where it serves as a humectant, solvent and preservative among other things. Animal studies show that high doses of propylene glycol can cause dangerously low heart rates and blood pressure. It has something to do with different specific gravity. However if you use a 50/50 mix ethylene glycol antifreeze with a specific heat of .85 (or 15% less than pure water) this would mean that the coolant system temperature is going to increase by 1.15 times the amount of heat that was rejected into the coolant (1 + 1-.85) x 10F. While you might see propylene glycol described as an organic compound, this does not mean it’s naturally occurring. Fill with water. Ethylene Glycol is used as an anti-freeze, but it has a high toxicity level which may be harmful to your skin. Propylene Glycol and Ethylene Glycol are commonly mistaken to be the same ingredient. If so got any picks and do you know how long it mixxed. It is primarily used to prevent water from freezing and increase its boiling point for automobiles. Therefore, it can still be harmful to the environment. Has anyone found a sytem with mixxed ethylene and propylene glycol in it. If 100 per cent glycol is purchased then on-site mixing is required, and this can cause issues if not done properly. Anything toxic? What are the properties of ethylene glycol? This is the best way to add glycol as it guarantees the correct glycol concentration, and that the water used in the mixture is free of contaminants. A balanced inhibitor system, to protect common metals of construction. Step 1. The term “glycol” is used when there are two hydroxyl groups present in neighboring carbon atoms. It can even cause the heart to stop. Glycol is a water-miscible coolant that is frequently used in heat transfer and cooling applications. Propylene glycol has the E-Number E1520. This is ethylene-based glycol and it is the standard process/industrial antifreeze additive. What spp is ethylene glycol poisoning common? I’ve got about a 50/50 mix in my truck now but friends tell me hat I have doomed my cooling system. Yes, Ethylene glycol and Propylene glycol are very similar chemically, therefore, can be mixed without any bad consequences for the engine. - small molecular weight = poorly absorbed -> activated charcoal wont be very helpful - ethylene glycol -> Glycoaldehyde -> Glycolic Acid -> Glycoxalic Acid -> Oxalic acid -> binds serum Ca -> insoluble calcium oxalate crystals (monohydrate) & hypocalcemia. The junction of these two determines the percent strength of a known Glycol. Ethylene glycol can be found in highly concentrated amounts in automotive antifreeze and some windshield de-icing products and in small amounts in household products such as printer ink, interior and exterior paint, spackle, etc. Many glycol vendors will provide glycol that is already pre-mixed. Checker had Peak AntiFreeze on sale, two 50/50 mix gallons for $10. Water / glycol can be heated by electricity, wood, pellets, natural gas, propane, fuel oil … Will I need another heating system ? FlowCool IG can be used in any application where low toxicity is not a requirement. $\begingroup$ Thank you for your help. Drain the water. On … Drain the coolant. When it is mixed with water, it disturbs the formation of ice. I checked the anti-freeze freeze protection on the Bobcat and the tester only registers 10 degrees Fahrenheit - not nearly good enough for our area. Carveaholic. What is antifreeze? * propylene glycol antifreeze is less toxic. Huh? Propylene glycol can also become more viscous than ethylene, even slightly affecting the heat exchange rate when used at very low temperatures. There have been a couple of cases where children receiving high doses had problems with heart function too. Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste.Its chemical formula is CH 3 CH(OH)CH 2 OH. My NAPA guy sold me the Prestone saying that that was the Nissan recommendation for my 2001 Frontier. Kal Row Member Posts: 1,519. You should not mix propylene glycol and ethylene glycol, because they can sometimes gel up, and subsequently block your cooling system, which will lead to overheating and potentially an expensive fix. Ethylene glycol and water can be mixed in any ratio because of their compatibility and makeup. So figure if they use 5% of that stuff it's equal to 10% PG. Steady-state temperatures of dry ice–ethanol and ethylene glycol mixtures. Ethylene or propylene glycol, to depress the freeze point of the fluid. Must I bring it in immediately for a flush? It freezes at 32°F (0°C) and boils at 212°F (100°C). In general, propylene glycol is not readily absorbed through the skin unless it also is mixed with another acid. Lots of heat involved? However, while ethylene glycol and propylene glycol are both biodegradable, propylene glycol degrades at a slower rate and has a greater biochemical oxygen demand. Ethylene glycol can facilitate convective heat transfer in automobiles and liquid cooled computers. Step 1 Make a concentrated solution to combat wood rot. Glycol comes in two varieties: ethylene glycol and propylene glycol. How long does it take and will a flush totally stop its reaction. Their molecular formulas are different; thus they have some different physical properties. Here it shows that the solution could be 30% Propylene Glycol. What did I do wrong? Water is nature’s heat transfer fluid, a liquid used since the dawn of time to heat and cool. The melting point of propylene glycol is about -59 o C. Since the vapour pressure of propylene glycol is negligible, it does not evaporate at a considerable degree. Like ethylene glycol, propylene glycol may also be used as antifreeze and can be found in high concentrations in RV and “pet-friendly” antifreezes. What is the likely result of mixing some proportionately small amount of a 50/50 water/sodium hydroxide solution (let's say 10% or less) with a 50/50 water/propylene glycol solution in a closed container with a fair amount of room for expansion (perhaps also with pressure venting)? Operating an automobile without proper antifreeze can cause permanent damage, so testing ethylene and propylene glycol is an important component of proper vehicle maintenance. It is important to note that you should never mix different types or brand names of glycol, as this leads to the product congealing and the clogging of filters in the refrigeration system —potentially causing problems with heat transfer and fluid flow. Flowcool-Plus & Flowcool FS These are propylene-based glycols; FlowCool FS has been tested by the National Sanitary Foundation. However, when considered the uses, both are used for somewhat same purposes. Then I noticed the sticker on the machine … Since ethylene glycol can cause damage to the heart, nervous system and kidneys through prolonged exposure, you should consider propylene glycol your only option. If propylene glycol is on skin, say when giving dermal therapeutics, it can be seen in the blood and in the urine at low levels. Propylene glycol is an alcohol that absorbs water and mixes completely with many solvents. 0. It is viscous than water; it is considered as a syrup since it flows very slowly. On the other hand, propylene glycol has very low-level toxicity for some skin conditions and is used in many cosmetics. Coolant: Ethylene Glycol vs Propylene Glycol In my quest to find maintenance products, I came across something I thought I would question here. with water and glycol, you get solution seperation and will still get icy chnks - wont bust your pipes - but the ice chunks can block stuff, not good for a sprinkler . Propylene glycol is used in the “non-toxic” version of anti-freeze. It provides better heat transfer parameters than water, and can be mixed with water to provide a variety of heat transfer characteristics. From the shoutbox: Quote:» Alpha Dream - 10-23-8:04 pm -- Isopropyl myristate is something they add to alcohol to denature it.It's similar but thicker than PG. But they have completely different structures and attributes. Rather the term organic compound refers to the fact that it contains carbon. If it is well designed a radiant floor system is powerful enough to be your only heating system. Propylene glycol is used in antifreeze because, like ethylene glycol, it lowers the freezing point of water by disrupting the formation of ice crystals. The table is for ethylene glycol, and I would like to use the less toxic propylene glycol. Ethylene glycol is extremely toxic and can kill you. Discussion in 'Skid Steers' started by swampdog, Aug 27, 2014. swampdog Senior Member. In one burn victim study, as long as blood concentrations were below 1.3 mg/mL the patients survived. I just came to find that you can't use the same AntiFreeze tester for PROPYLENE glycol based antifreeze (Prestone) as ETHYLENE glycol based antifreeze (PEAK) even though they are both "Green". Joined: Sep 26, 2008 Messages: 393 Location: Canada. Containing two alcohol groups, it is classed as a diol.It is miscible with a broad range of solvents, including water, acetone, and chloroform.In general, glycols are non-irritating and have very low volatility. Kal Row Member Posts: 1,519. No, you will not need another heating system. Run engine until it gets hot. $\endgroup$ – Margaret Oct 13 '17 at 15:35 Ethylene glycol and propylene glycol are the major constituents of antifreeze. If glycol must be site mixed, it should only be done with deionized water.” Hogle explained that ethylene and propylene glycol have different fluid, toxicity, and heat transfer characteristics that will actually prevent the system from operating correctly when mixed. Antifreeze for Bobcat S300 - Propylene or Ethylene Glycol? Lot's of gas? This leads it to be used as an anti-freezing agent. Can Prestone Dex-Cool be mixed with your basic NAPA Ethylene Glycol? Fortunately, there are a number of reliable methods available to evaluate antifreeze quality. 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