Triethylene Glycol
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Triethylene Glycol

i Table of Contents Introduction .................................. 1 Quality, Service, and Product Information . . . . . . . . . . . . . . . . . . . . . Table Applications . . . . . . . . . . . . .

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Triethylene Glycol




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Triethylene Glycol i Table of Contents Introduction .................................. 1 Quality, Service, and Product Information . . . . . . . . . . . . . . . . . . . . . Table Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Product Stewardship Guidelines and Principles . . . . . . . . . . . . . . . . . . 3 Non-supported applications of Dow-manufactured EG, DEG,TEG,TETRA, and By-Products of Glycol Manufacturing . . . . . . . . . . . . . . . . . . . . 3 Properties ................................... 5 TablePhysical Properties of Triethylene Glycol . . . . . . .

. . . . . . . . Table Solubilities of Various Materials in Triethylene Glycol . . . . . . . . Table 4 Triethylene Glycol Compatibility with Elastomeric Materials Table 5 Constant Boiling Mixtures of Triethylene Glycol . . . . . . . . . . . Figure 1 Freezing Points of Aqueous Triethylene Glycol Solutions . . . . . . . Figure 2 Boiling Points vs Composition of Aqueous Triethylene Glycol Solutions at Various Pressures . . . . . . . . . . . . . . . . 10Figure 3 Condensation Temperatures vs Composition of Aqueous Triethylene Glycol Solutions at Various Pressures . . . . . . . . . .

11Figure 4 Vapor Pressures of Triethylene Glycol at Various Temperatures . . 12Figure 5 Vapor Pressures of Aqueous Triethylene Glycol Solutions at Various Temperatures . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 6 Specic Gravities of Aqueous Triethylene Glycol Solutions . . . . . 14Figure 7 Viscosities of Aqueous Triethylene Glycol Solutions . . . . . . . . . 15Figure 8 Specic Heats of Aqueous Triethylene Glycol Solutions . . . . . . . 16Figure 9 Thermal Conductivities of Aqueous Triethylene Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . .

17Figure10 Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact Temperatures . . . . . . . . . . . . . . . . . . . 18Figure 11 Comparative Hygroscopicities of Various Glycols at 70F (21C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figure12 Refractive Indices of Pure Triethylene Glycol . . . . . . . . . . . . 20 ii Figure 13 Refractive Indices of Aqueous Triethylene Glycol Solutions at 77F (25C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Figure 14 Surface Tensions of Pure Triethylene Glycol . . . . . . . . . . . . . 22Figure

15 Surface Tensions of Aqueous Triethylene Glycol Solutions at 77F (25C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Figure 16 Electrical Conductivities of Aqueous Triethylene Glycol Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Health and Environmental Information ................... 25 Health Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Environmental Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Biodegradation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25 Storage and Handling ............................. 26 Shipping Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Product Safety ................................. 27 Emergency Service 28 Sales Ofce ................................. 29 Table of Contents 1 Introduction Introduction Precautions: Carefully review our current Material Safety Data Sheet Dow: Your Best Source for Triethylene Glycol Quality Dow is the world’s largest producer of ethylene oxide and glycols, with over 70 years of experience in their

manufacture, marketing, and research and development The uniform implementation of statistical process control at all of our plants enables us to consistently deliver the high-quality product you require Our total approach to Quality and Quality Systems is continuously improved to ensure that our facilities meet the requirements for registration to the stringent ISO 9000 series of standards Optimum performance demands a quality product, and that is what we deliver Our vast distribution system of plants, terminals, tankers, barges, tank cars, and trucks helps to ensure your delivery of

triethylene glycol when and where you need it Service For solutions to problems or answers to questions, Dow offers extensive technical service and support, available through trained sales representatives as well as our skilled staff from the Research and Development Department Your order of triethylene glycol will be processed expertly and quickly when you place a call to one of our many helpful customer service representatives (See page 29 Product Information Formula 6 H 14 O 4 Molecular Formula HOCH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 OH CAS Number 112-27-6 Glycol-bis(hydroxyethyl)

ether 2,2’-[1,2-ethanediylbis(oxy)] bis-ethanol Triglycol TEG T3EG TriEG Triethylene glycol is a transparent, colorless, low-volatility, moderate-viscosity, water-soluble liquid Under normal conditions, there is no detectable odor; under high vapor concentrations, a slightly sweet odor may be detected It is completely miscible with water and many organic liquids Triethylene glycol has properties similar to other glycols and may be used preferentially in applications requiring a higher boiling point, higher molecular weight, or lower volatility than diethylene glycol The

hydroxyl groups on triethylene glycol undergo the usual alcohol chemistry giving a wide variety of possible derivatives Hydroxyls can be converted to aldehydes, alkyl halides, amines, azides, carboxylic acids, ethers, mercaptans, nitrate esters, nitriles, nitrite esters, organic esters, perox ides, phosphate esters and sulfate esters Triethylene glycol may be used directly as a plasticizer or modied by esterication The solubility properties of triethylene glycol are important for many applications End-uses for triethylene glycol are numerous (See Table 1 2 Introduction Introduction

Hygroscopicity • Dehydration of natural gas • Moisturizing and plasticizing cork, adhesives Plasticizer • Safety glass • Separation membranes (silicone rubber, polyvinyl acetate, cellulose triacetate) • Ceramic materials (resistant refractory plastics, molded ceramics) Low Volatility • Gas dehydration Solvent • Resin impregnants and other additives • Steam-set printing inks • Aromatic and parafnic hydrocarbons separations • Cleaning compounds • Polyethylene terephthalate production equipment cleaning • Cyanoacrylate and

polyacrylonitrile Chemical Intermediate • Unsaturated polyester resin • Various resins of the alkyd type used as laminating agents in adhesives • Esterication products used in plasticizer intermediates for nitrocellulose lacquers and vinyl resins • Polyester polyols for polyurethanes • Thermoplastic polyurethanes • Silcone compounds • Emulsiers • Lubricants Freezing Point Depression • Heat transfer uids Table 1 Applications 3 Introduction Introduction Product Stewardship Guidelines and Principles of The Dow Chemical Company The

following bullet points identify some applications that are NOT supported by Dow for EG Products on a go-forward basis The reasons for these limitations include areas in which we have decided not to pursue for general business reasons and actions that would minimize unnecessary risk and liabilities to the business In addition, the following list of uses not supported by Dow does not imply a Dow warranty or Dow support of uses in applications not covered by this list This list is not all-inclusive Non-supported applications of Dow- manufactured EG, DEG,TEG,TETRA, and By-Products of

Glycol Manufacturing (Dow EG Products): The use of Dow EG Products in the production of tobacco and in the manu - facture of tobacco products (including but not limited to additives, humectants, lters, inks, and paper) is not supported by DowThe use of Dow EG Products for the generation of articial smoke/theatrical fogs/mist is not supported by DowThe use of Dow EG Products as an ingredient in fuel for warming foods (Sterno TM -like application) or in fuel for heating an enclosed space where human exposure is possible is not supported by DowThe use of Dow EG Products in re

extinguishing sprinkler systems is not supported by DowThe use of Dow EG Products in the manufacture of munitions is not supported by DowThe use of Dow EG Products in the production of deicers for use on roadways and pedestrian walkways is not supported by DowThe use of Dow EG Products as a component of heat transfer uids in systems where the heat transfer uid could inltrate (e, via an exchanger leak, backow prevention failure, or other means) a potable water system is not supported by DowThe use of Dow EG Products purposely as a non-reacted component in a formulation for direct

internal or external human/ animal contact, including but not limited to ingestion, inhalation, and skin contact, and in medical/veterinary devices and medical/veterinary applications is not supported by Dow (Examples of some such applications are uses as a direct component in foods, beverages, pharmaceuticals, cosme- tics, or personal care products • The use of Dow EG Products for consumer or hospital deodorizing or air “purifying” purposes by spraying as an aerosol is not supported by DowThe use of Dow EG Products as a non-reacted component in adhesives,

packaging that has direct contact with food or beverages is not supported by Dow 4 Introduction Introduction The use of Dow EG Products as a non- reacted component in the formulation of glues, pastes, or items where the potential for sufcient human contact and/or ingestions exists (including but not limited to children’s school glues/ paste or art/craft glue/paste) is not supported by Dow To enter into new applications beyond the traditional standard industrial use applications, contact your Dow representative to review the specic application Dow has a risk assessment

process whereby the application will be reviewed and a deter - mination will be made as to whether the application meets Dow’s requirements and can therefore be supported by Dow Because use conditions and applicable laws may differ from one location to another and may change with time, when an application is supported by Dow, Dow does not warrant and is not responsible for the use in such application NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED Further, any violation of or failure to comply

with the information contained in Dow’s Material Safety Data Sheet, Product Label, Product Information Guide, product literature or other product safety information is a misuse of Dow’s EG and Higher Glycol Products These documents can be obtained by contacting your Dow representative or Dow’s Customer Information Group (800) 447-4369 We can never specify all circumstances where misuse might occur, so if at any time a customer or downstream use appears to be improper or unsafe, please contact our Product Steward at (225)

353-6122 5 Properties Properties Property Scientic Units Common Units Autoignition Temperature 349C 660F Boiling Point at 760 mm Hg2880C5504F Boiling Point/ Pressure (750–770 mm Hg)0073C/kPa055C/mm Hg Critical Pressure3,3133 kPa 24,852 mm Hg Critical Specic Volume443 L/gmol10 ft 3 /lbmol Critical Temperature 440C 824F Dielectric Constant23692369 Electrical Conductivity20 x 10 -6 mhos/cm002 micromhos/cm Evaporation Rate (Butyl Acetate = 1)00010001 Flammable Limits in Air, Lower9%(V)9%(V) Flammable Limits in Air, Upper2%(V)2%(V) Flash Point, Cleveland Open Cup ASTM D

92 191C 375F Flash Point, Pensky-Martens Closed Cup ASTM D 93 177C 350F Freezing Point-43C243F Heat of Combustion at 25C -3,500 kJ/gmol -10,020 Btu/lb Heat of Vaporization625 kJ/gmol 179 Btu/lb Molecular Weight15017 g/mol15017 g/mol Onset of Initial Decomposition 240C 464F Refractive Index, nD, 20C45594559 Solubility in Water at 20C, wt% 100% 100% Solubility of Water in Triethylene Glycol at 20C, wt% 100% 100% Specic Gravity, 20/20C12551255 Specic Gravity vs Temperature (10–40C)00078/C00078/C Surface Tension455 mN/m455 dynes/cm Vapor Density (Air = 1) Vapor Pressure at

20C0001 kPa001 mm Hg Viscosity at 20C490 mPs490 cP Table 2 Physical Properties of Triethylene Glycol Determined on puried samples of Triethylene Glycol The data provided for these properties are typical values, intended only as guides, and should not be construed as sales specications 6 Properties Properties Material Solubility Acetone Completely Soluble Animal Glue (Dry) Slightly Soluble Benzene Completely Soluble Carbon Tetrachloride40 Castor Oil Cellulose Acetate Completely Soluble Chlorobenzene Completely Soluble Coconut Oil Insoluble Cottonseed Oil Insoluble Dextrin Completely

Soluble Dextrin (10% in water) Insoluble Dibutyl Phthalate19 Dichloroethyl Ether Completely Soluble Diethanolamine Completely Soluble Ethyl Ether20 Ethylene Glycol Stearate Slightly Soluble Gum Damar Slightly Soluble Heptane Slightly Soluble Hydrous Wool Fat Slightly Soluble Kauri Gum Slightly Soluble Lard Oil Insoluble Linseed Oil Insoluble Methanol Completely Soluble Monoethanolamine Completely Soluble Nitrocellulose Completely Soluble o -Dichlorobenzene Completely Soluble Olive Oil Insoluble Table 3 Solubilities of Various Materials in Triethylene Glycol Solubility, g/100 mL of

Triethylene Glycol at 25C Material Solubility Parafn Oil Insoluble Phenol Completely Soluble Pine Oil Completely Soluble Rosin Shellac Slightly Soluble Soy Bean Oil Insoluble Sperm Oil Insoluble Tall Oil10 Tetrachloroethylene17 Toluene33 Tung Oil Insoluble Turkey Red Oil12 Urea31 10 Properties Properties The Dow Chemical Company

Triethylene Glycol Product Guide Figure 2: Boiling Points vs. Composition of Aqueous Triethylene Glycol Solutions at Various Pressures T empe r ature, C 350 300 250 200 1 50 1 00 50 T empe r ature, F 1 40 1 80 220 260 300 34 0 380 420 460 500 54 0 580 620 660 T r ie t h ylene Gl y col, P ercent b y W eight in W a t er 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 00 10 1520 mm Hg* 7 60 mm Hg 300 mm Hg *2 atmospheres absolute, 1 atmosphere gauge Figure 2 Boiling Points vs Composition of Aqueous Triethylene Glycol Solutions at Various Pressures *2 atmospheres absolute, 1 atmosphere

gauge 12 Properties PropertiesFigure 4 Vapor Pressures of Triethylene Glycol at Various Temperatures The Dow Chemical Company

Triethylene Glycol Product Guide Figure 4: Vapor Pressures of Triethylene Glycol at Various Temperatures Triethylene Glycol Antoine Constants for Calculating Vapor Pressure 3-Cons t ant E q uation ( T e m perature R ange = 1 50 - 300C) C 0 0 3 - 0 5 1 = e g n a R 7 0 0 2 0 3 6 . 7 = A g H m m = P 1 8 5 4 . 6 5 1 2 = B C = T 2 4 4 2 9 . 5 6 1 = C Log 1 0 (P) = A – B/(T + C) 5-Cons t ant E q uation ( T e m perature R ange = 360 . 1 5 - 7 1 2. 5 1K) K 1 5 . 2 1 7 - 5 1 . 0 6 3 = e g n a R 5 0 2 5 . 5 9 = A a P = P 7 . 4 3 8 2 1 = B n i v l e K = T 0 . 0 = C D =

-9.6 6 752 E=3.0 0 1 5 x 1 0 -29 N= 1 0 ln(P) = A – B/(T + C) + D(ln(T)) + ET N T empe r ature, F 22 0 2 4 0 28 0 32 0 36 0 40 0 44 0 48 0 56 0 6 40 V apor Pressure, mm Hg 1 2 3 4 6 8 1 0 20 30 40 60 80 1 00 200 300 400 600 800 1 000 T empe r ature, C 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 20 0 2 4 0 28 0 32 0 360 T r ie t h ylene Gl y col An t oine Con s tants A = 7 .63020 0 7 B = 2 1 56.45 8 1 C = 1 65.9 2 442 Log(P) = A–B/(t+C) mm Hg, Log 1 0 , C 12 Triethylene Glycol Antoine Constants for Calculating Vapor Pressure 3-Constant Equation (Temperature Range =

150–300C)6302007 Range = 150 – 300CB = 21564581 P = mm HgC = 16592442 T = C Log 10 (P) = A – B/(T + C)5-Constant Equation (Temperature Range = 36015–71251K)A = 955205 Range = 36015 71251 B = 12834P = PaT = KelvinD = -9667520015 x 10 -29 N = 10 ln(P) = A – B/(T + C) + D(ln(T)) + ET N 14 Properties PropertiesFigure 6 Specic Gravities of Aqueous Triethylene Glycol Solutions The Dow Chemical Company

Triethylene Glycol Product Guide Figure 6: Specic Gravities of Aqueous Triethylene Glycol Solutions Specic Gravity at T/60F = A + Bx + Cx 2 x = Weight % Triethylene Glycol C B A F , T 6 - E 9 0 0 2 . 5 - 3 - E 8 6 2 8 . 1 2 0 5 0 . 1 0 5 - 6 - E 4 0 3 8 . 4 - 3 - E 6 6 4 7 . 1 9 1 3 0 . 1 0 6 - E 4 9 7 8 . 2 - 3 - E 7 4 2 5 . 1 1 2 1 0 . 1 0 5 6 - E 5 5 9 4 . 5 - 3 - E 8 1 5 7 . 1 0 2 9 9 . 0 0 0 1 6 - E 4 8 8 3 . 4 - 3 - E 0 1 4 5 . 1 4 0 8 9 . 0 0 5 1 6 - E 9 8 0 5 . 3 - 3 - E 8 6 0 4 . 1 7 2 6 9 . 0 0 0 2 6 - E 1 9 9 7 . 2 - 3 - E 5 0 2 3 . 1 3 1 4 9 . 0 0 5 2 6 - E 8 4 8 0 . 2 - 3 -

E 1 1 5 2 . 1 7 7 1 9 . 0 0 0 3 F r eezing P oint Cu r v es -50F 0F 50F 1 00F 1 50F 200F 250F 300F 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 00 0.90 0.92 0.94 0.96 0.98 1 .00 1 .02 1 . 0 4 1 .06 1 .08 1 . 1 0 1 . 1 2 1 . 1 4 1 . 1 6 1 . 1 8 T r ie t h ylene Gl y col, P ercent b y W eight in W a t er Apparent Specic G r a vit y , T/60F 14 T, F A B C -5005028268E-3-52009E-6 03197466E-3-48304E-6 5001215247E-3-28794E-6 10099207518E-3-54955E-6 15098045410E-3-43884E-6 20096274068E-3-35089E-6 25094133205E-3-27991E-6 30091772511E-3-20848E-6 Specic Gravity at T/60F = A + Bx + Cx 2 x =

Weight % Triethylene Glycol 16 Properties PropertiesFigure 8 Specic Heats of Aqueous Triethylene Glycol Solutions The Dow Chemical Company

Triethylene Glycol Product Guide Figure 8: Specic Heats of Aqueous Triethylene Glycol Solutions Specic Heat = A + BT+CT 2 T = Temperature, C C B A % t W , G E i r T 6 - E 3 4 1 9 . 2 4 - E 6 8 2 7 . 2 - 0 4 5 0 0 . 1 0 6 - E 2 5 9 4 . 2 5 - E 4 4 1 7 . 2 - 5 0 7 6 9 . 0 0 1 6 - E 4 2 5 4 . 2 4 - E 9 2 4 0 . 2 0 9 4 2 9 . 0 0 2 6 - E 2 5 9 6 . 1 4 - E 0 0 0 3 . 4 2 1 0 8 8 . 0 0 3 6 - E 4 1 7 3 . 1 4 - E 6 8 2 2 . 6 9 2 2 3 8 . 0 0 4 6 - E 7 5 8 0 . 1 4 - E 6 8 2 9 . 7 9 2 2 8 7 . 0 0 5 7 - E 0 0 0 0 . 8 4 - E 0 0 0 4 . 9 0 0 2 2 7 . 0 0 6 7 - E 0 2 6 7 . 4 3 - E 1 7 8 0 . 1 8 8 6 6 6 . 0 0

7 7 - E 1 7 5 8 . 2 3 - E 3 4 0 2 . 1 3 9 3 0 6 . 0 0 8 7 - E 8 4 0 9 . 1 3 - E 0 0 8 2 . 1 8 8 8 3 5 . 0 0 9 8 - E 0 4 1 7 . 5 - 3 - E 9 2 9 3 . 1 4 1 6 8 4 . 0 0 0 1 F r eezing P oint Cu r v es -5 0 0 5 0 1 0 0 1 5 0 200 0.4 0.5 0.6 0.7 0.8 0.9 1 .0 1 . 1 T empe r ature, C T empe r ature, F Specic Heat, Btu/lb/F T r ie t h ylene Gl y col, P ercent b y W eight in W a t er -4 0 0 4 0 8 0 1 2 0 1 6 0 20 0 2 4 0 28 0 32 0 360 0 1 0 20 40 50 60 70 80 90 1 00 30 16 TriEG,

Wt% A B C 00540-27286E-49143E-6 1096705-27144E-54952E-6 20924900429E-44524E-6 30880123000E-46952E-6 40832292286E-43714E-6 50782299286E-40857E-6 60722004000E-40000E-7 70666880871E-37620E-7 80603932043E-38571E-7 90538882800E-39048E-7 100486143929E-3-57140E-8 Specic Heat = A + BT+CT 2 T = Temperature, C 18 Properties PropertiesFigure 10 Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact Temperatures The Dow Chemical Company

Triethylene Glycol Product Guide Figure 10: Dew Points of Aqueous Triethylene Glycol Solutions at Various Contact Temperatures Dew or Frost Point = A + BT T = Temperature, C TriEG, Wt % A B 0 5 0 1 0 . 1 8 0 3 0 . 3 - 0 5 0 1 6 1 0 . 1 9 0 0 0 . 7 - 0 7 0 6 1 1 0 . 1 5 4 7 . 0 1 - 0 8 7 8 1 8 9 . 0 3 2 9 . 7 1 - 0 9 9 1 0 3 9 . 0 2 5 2 . 5 2 - 5 9 8 9 5 5 8 . 0 5 7 6 . 4 3 - 8 9 0 5 1 0 8 . 0 9 1 4 . 1 4 - 9 9 3 6 2 3 7 . 0 5 9 1 . 7 4 - 5 . 9 9 F r eezing P oint Cu r v es -30 -2 0 - 1 0 0 1 0 2 0 3 0 4 0 50 -50 -40 -30 -20 - 1 0 0 1 0 20 30 40 50 60 Contact T empe r atures of Solution,

C Contact T empe r atures of Solution, F F ro s t P oint,  C D e w P oint, C F ro s t P oint,  F D e w P oint, F -2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 20 99.5 99 98 95 70 50 T r ie t h ylene Gl y col, P ercent b y W eight in W a t er 90 80 -50 -40 -30 -20 - 1 0 0 1 0 20 30 40 50 60 70 80 90 1 00 1 1 0 1 20 1 30 1 40 18 TriEG, Wt% A B 50-3030801050 70-7000901610 80-1074501160 90-1792398187 95-2525293019 98-3467585598 99-414198015099-4719573263 Dew or Frost Point = A + BT T = Temperature, C 20 Properties PropertiesFigure 12 Refractive Indices of Pure Triethylene Glycol The Dow Chemical Company

Triethylene Glycol Product Guide Figure 12: Refractive Indices of Pure Triethylene Glycol Refractive Index = 1.4626 – 0.000340T T = Temperature, C 2 0 2 2 2 4 2 6 2 8 3 0 3 2 3 4 3 6 3 8 40 1 . 4 46 1 . 4 48 1 .450 1 .452 1 .45 4 1 .456 1 .458 1 .460 T empe r ature, C R eacti v e Ind e x 20 Refractive Index = 14626 – 0000340T T = Temperature, C 22 Properties PropertiesFigure 14 Surface Tensions of Pure Triethylene Glycol The Dow Chemical Company

Triethylene Glycol Product Guide Figure 14: Surface Tensions of Pure Triethylene Glycol Surface Tension, dynes/cm = 47.330 – 0.088T T = Temperature, C 0 50 4 0 8 0 1 2 0 1 6 0 20 0 2 4 0 280 1 0 0 1 50 3 4 36 38 40 42 4 4 46 T empe r ature, C T empe r ature, F Su r f ace T ension, dynes/cm 22 Surface Tension, dynes/cm = 47330 – 0088T T = Temperature, C 24 Properties PropertiesFigure 16 Electrical Conductivities of Aqueous Triethylene Glycol Solutions The Dow Chemical Company

Triethylene Glycol Product Guide Figure 16: Electrical Conductivities of Aqueous Triethylene Glycol Solutions Note: The quality of water used for dilution can signicantly affect electrical conductivity. 0 1 0 20 3 0 40 5 0 60 7 0 8 0 9 0 1 00 0 2 4 6 8 1 0 1 2 T r ie t h ylene Gl y col, P ercent b y W eight in W a t er Electrical Conductivit y , micromhoms/cm 24 Note: The quality of the water used for dilution can signicantly affectthe electrical conductivity 25 Health Effects See our current Material Safety Data Sheet for the most current exposure limits,

health, rst aid, and toxicology information Environmental Information See our current Material Safety Data Sheet for current toxicity information Biodegradation For information concerning the biodegrad - ability of triethylene glycol, please refer to the latest Material Safety Data Sheet Health and Environmental Information Health and Environmental Information 26 This information is offered as a guide in planning bulk storage facilities for glycols Glycols are generally considered to be stable, noncorrosive chemicals with high ash points Under ordinary conditions, all of these chemicals

can be stored in mild steel vessels For long-term storage, or if trace iron contamination and the development of color are objectionable in any of the glycols, a storage vessel lined with a baked-phenolic resin, an air-drying epoxy-phenolic resin, or a vinyl resin or a stainless steel or aluminum tank is suggested Zinc or galvanized iron is not recommended, and copper or copper alloys may cause product discoloration It is not general practice to use an inert gas in the vapor space of glycol storage tanks, because all chemicals in this family have high boiling points and the vapors in

the tanks are relatively nonammable However, if extremely low water content is required, consistent with a long storage period, a nitrogen blanket can be used to exclude atmospheric moisture and air Blanketing with nitrogen will also minimize low-level oxidation, if necessary for the desired application The inert gas prevents air oxidation in order to maintain product within acidity specications Increased acidity enhances iron pickup from steel vessels Alternatively, a desiccant unit can be installed on the tank vent line to dry incoming air If above-ground outside storage is

planned, it may be necessary to install provisions for heating tanks and lines Many glycols have a moderately high freezing point or become relatively viscous at severe winter tempera tures However, excessive temperature can cause undesirable degradation of glycols Automatic controls are suggested to limit the temperature of the contents to 120F (49C) In cold climates, it is generally desirable to make provisions for draining the pump and the transfer lines if they are outside the building If this is not feasible, it may be necessary to insulate and steam trace or otherwise heat the

transfer lines to prevent freezing of the product Care must be taken in such an application, because continued exposure of glycols to high temperatures, greater than 120F (49C), will result in product degradation Transfer piping of mild steel is generally used Shipping Data Triethylene glycol is not regulated by the U Department of Transportation; therefore, it does not have a DOT Shipping Name, Hazard Classication, DOT Warning Label, or Identication Number Storage and Handling Storage and Handling Weight per Gallon at 20C36 lb Coefficient of Expansion at 55C 00072 Flash Point,

Pensky-Martens Closed Cup 350F Net Contents and Type of Container 1-Gallon Tin Can0 lb 5-Gallon DOT 17E, Pail 47 lb 55-Gallon DOT 17E, Drum 522 lb Shipping Data For Triethylene Glycol 27 When considering the use of triethylene glycol in any particular application, review and understand our current Material Safety Data Sheet for the necessary safety and health information For Material Safety Data Sheets and other product safety information on Dow products, contact The Dow Chemical Company sales ofce nearest you Before handling any products mentioned in this booklet, you should obtain

the available product safety information from the suppliers of those products and take the necessary steps to comply with all precau tions regarding the use of triethylene glycol No chemical should be used as or in a food, drug, medical device, or cosmetic, or in a product process in which it may come in contact with a food, drug, medical device, or cosmetic until the user has determined the suitability of the use Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and

the information in this document are appropriate for Customer’s use and for ensuring that Customer’s work - place and disposal practices are in compliance with applicable laws and other governmental enactments Dow requests that the customer read, understand, and comply with the informa - tion contained in this publication and the current Material Data Safety Sheet(s) The customer should furnish the information in this publication to its employees, contrac - tors, and customers, or any other users of the product(s), and request that they do the same Product Safety Product

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its products The Chemical Manufacturers Association (CHEMTREC), Transportation Canada (CANUTEC), and the Chemical Emergency Agency Service maintain an around-the-clock emergency service for all chemical products DO NOT WAIT Phone if in doubt You will be referred to a specialist for advice 29 For additional information, contact our customer service center: The Dow Chemical Company 2040 Dow Center Midland, MI 48674wwwdowcom Phone: (800) 232-2436 Sales Ofce Sales Ofce NOTICE: No freedom from any patent owned by Seller or others is to be inferred Because use conditions and applicable

laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments Seller assumes no obligation or liability for the information in this document NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDEDPublished February 2007™Trademark of

The Dow Chemical Company (“Dow”) or an afliated company of Dow Form No: XXX-0207X CRCG