30 propylene glycol freezing point table

Dynalene Ethylene Glycol Series

Table 2 Freezing points burst points boiling points and specific gravities of Dynalene ethylene glycol solutions Vol% Wt% Freezing Point Burst Point Boiling Point Specific Ethylene Glycol Ethylene Glycol F C F C F Gravity (22C) 0 0 32 0 0 32 0 0 212 1 000 5 5 6 29 -1 7 27 -2 7 213 1 008

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How does glycol keep a closed loop water system from

Pure water freezes at 32 F but a 60% solution of DOWFROST propylene glycol pushes the freezing point down to -60 F While the freezing point of pure glycol is only -39 F the synergy between glycol and water results in a much lower freezing point This is very important for closed-loop systems that may be exposed to freezing conditions

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CHAPTER 31 PHYSICAL PROPERTIES OF SECONDARY

The freezing and boiling points of aqueous solutions of ethylene glycol and propylene glycol are given in Tables 4 and 5 Note that increasing the concentration of ethylene glycol above 60% by mass causes the freezing point of the solution to increase Propylene glycol solutions above 60% by mass do not have freezing points Instead of freezing propylene glycol solutions supercool and become

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Study of Stability and Thermal Conductivity of

properties which include a high boiling point a low freezing point and stability over a large range of temperatures high specific heat and thermal conductivity But ethylene glycol is toxic in nature Propylene glycol is considered safe for use in food or food processing applications and can be used in enclosed spaces [2] In engine coolants

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Triethylene glycol

In rabbits dosed with 200 or 2000 mg/kg triethylene glycol respectively excreted 34 3% or 28% of the administered dose in the urine as unchanged triethylene glycol and 35 2% as a hydroxyacid form of this chemical In the studies with rats little if any 14-C-oxalate or 14-C-triethylene glycol in conjugated form was found in the urine

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Propylene Glycol Industrial Grade

Frost Protection vs %V/V Propylene Glycol-45-40-35-30-25-20-15-10-5 0 0 5 10 15 20 25 30 35 40 45 50 % V/V Propylene Glycol Temperature (C) Freezing Point Protection Temperature Burst Temperature Freezing point according to ASTM D 1177 is the temperature for

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ICSC 0321

PROPYLENE GLYCOL: ICSC: 0321: PHYSICAL CHEMICAL INFORMATION Physical State Appearance COLOURLESS ODOURLESS HYGROSCOPIC VISCOUS LIQUID Physical dangers Chemical dangers Reacts violently with strong oxidants and alkalis This generates fire hazard Formula: C 3 H 8 O 2 / CH 3 CHOHCH 2 OH Molecular mass: 76 1 Boiling point: 188 2C Melting point: -59C

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Some Physical Properties of the Ternary System: Ethylene

glycol diethylene glycol and propylene glycol In 1941 approximately one-third of the automobiles in the United States used antifreezes having an ethylene glycol base (4) The reasons for the widespread use of the glycols are: adequate lowering of freezing point in water solutions boiling points higher than that of water (11 14) and minimum corrosion effects (4) The purpose of this

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Propylene Glycol (CAS 57

Propylene glycol USP Propylenglycol Sentry Propylene Glycol Sirlene Solar winter ban Solargard P Trimethyl glycol Ucar 35 propanediol propylene glycol (1 2-propanediol) alpha-Propylene glycol Sources Joback Method NIST Webbook Crippen Method Δ c H liquid: Standard liquid enthalpy of combustion (kJ/mol) C p gas: Ideal gas heat capacity (J/molK) C p liquid: Liquid phase

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The Glycol Manual

Both Ethylene and Propylene glycol lower the freezing point of water Please refer to the tables to determine the new "freezing point" based on the amount and type of glycol Freezing point was put in quotes above because glycol:water solutions don't have a well defined freezing point When an ethylene glycol:water solution approaches its "freezing point" it supercools instead of

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Selecting the Proper Glycol Concentration for Closed

Selecting the Proper Glycol Concentration for Closed-Loop HVAC Systems Leigh Janssen August 14 2016 Service Tip of the Month There are two basic types of glycol protection available for your closed-loop HVAC system: "burst protection" and "freeze protection " Burst protection is sufficient if the system will remain dormant or inactive when the temperature drops below freezing and

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Freezing Points Densities and Refractive Indexes of

Volumetric and ultrasonic studies on interactions of ethylene glycol diethylene glycol and triethylene glycol in aqueous solutions of glycerol at temperatures T = (293 15 K − 308 15) K The Journal of Chemical Thermodynamics 2018 125 93-106 DOI: 10 1016/j jct 2018 05 016

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What Is Glycol? How is it Used in a

In between freezing points are non-linear For instance a solution of 10% ethylene glycol freezes at -3 4 C (25 9 F) 30% ethylene glycol freezes at -13 7 C (7 3 F) and 60% ethylene glycol freezes at -52 8 C (-63 F) The freezing point of a 60/40 ethylene glycol/water mixture is much lower than that of either pure ethylene glycol or pure

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Formulating Water

Table l-KeyProperties of Some Propylene and Ethylene Glycol Ethers asCompared toWater Evaporation Rate Glycol Ether Nomenclature nBuAc=l00 % in Water 25C Flash Point OF Surface Tension dynes/cm25C PM Propylene glycol monomethyl ether PE Propylene glycol monoethyl ether PNP Propylene glycol n-propylether PTB Propylene glycol t-butylether PNB Propylene glycol

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ASHRAE Handbook help! Glycol mixture freezing :

What is the freezing point of a 30% glycol mixture (both ethylene and propylene) And is there any +/- variance noted (ie: if the table says 30% freezes at 5 degrees F is there a range of +/- 1 or 2 degrees?) For reference I am being told this information is in the Fundamentals Handbook 2005 part 21 5 Table 4 Thanks for any help

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Propylene Glycol Industrial Grade

Frost Protection vs %V/V Propylene Glycol-45-40-35-30-25-20-15-10-5 0 0 5 10 15 20 25 30 35 40 45 50 % V/V Propylene Glycol Temperature (C) Freezing Point Protection Temperature Burst Temperature Freezing point according to ASTM D 1177 is the temperature for

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EVERYTHING YOU WANTED TO KNOW ABOUT GLYCOL A Brewery

Although propylene glycol doesn't contain sugars it affects the refractive index in a similar fashion Most chiller system manufacturers would also be happy to test the freeze point/concentration of solution samples that are sent to them Weight % Propylene Glycol Volume % Propylene Glycol Freezing Point in Fahrenheit Freezing Point in Celsius

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Glycol Charts About Glycol

ABOUT GLYCOL IN CHILLERS A chiller will run without glycol as long as the fluid temperature in the system is above freezing Glycol or other inhibitors are recommended for most process cooling applications even if the fluid temperature doesn't reach temperatures near freezing What type of glycol is best? American Chillers recommends Inhibited Propylene Glycol which works []

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Selecting the Proper Glycol Concentration for Closed

Selecting the Proper Glycol Concentration for Closed-Loop HVAC Systems Leigh Janssen August 14 2016 Service Tip of the Month There are two basic types of glycol protection available for your closed-loop HVAC system: "burst protection" and "freeze protection " Burst protection is sufficient if the system will remain dormant or inactive when the temperature drops below freezing and

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ASHRAE Handbook help! Glycol mixture freezing :

What is the freezing point of a 30% glycol mixture (both ethylene and propylene) And is there any +/- variance noted (ie: if the table says 30% freezes at 5 degrees F is there a range of +/- 1 or 2 degrees?) For reference I am being told this information is in the Fundamentals Handbook 2005 part 21 5 Table 4 Thanks for any help

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