00-185 Tetraethylene Glycol - Magnum Solventmagnumsolvent.com/productdata/Product...

Tetra

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Glyc

ol

The Dow Chemical Company Tetraethylene Glycol Product Guide

IMPORTANT

© 2003 The Dow Chemical Company

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 changewith 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’sworkplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes no obligation or liability for the information inthis document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.


Table of Contents

2 Introduction3........Table 1: Applications

5 Properties5 ........Table 2: Physical Properties of Tetraethylene Glycol

6 ........Table 3: Solubilities of Various Materials in Tetraethylene Glycol

7 ........Table 4: Tetraethylene Glycol Compatibility with Elastomeric Materials

8 ........Figure 1: Freezing Points of Aqueous Tetraethylene Glycol Solutions

9 ........Figure 2: Boiling Points vs. Composition of Aqueous Tetraethylene Glycol Solutions at Various Pressures

10 .....Figure 3: Condensation Temperatures vs. Composition of Aqueous Tetraethylene Glycol Solutions at Various Pressures

11......Figure 4: Vapor Pressures of Tetraethylene Glycol at Various Temperatures

12 ......Figure 5: Vapor Pressures of Aqueous Tetraethylene Glycol Solutions at Various Temperatures

13 ......Figure 6: Specific Gravities of Aqueous Tetraethylene Glycol Solutions

14 ......Figure 7: Viscosities of Aqueous Tetraethylene Glycol Solutions

15 ......Figure 8: Specific Heats of Aqueous Tetraethylene Glycol Solutions

16 ......Figure 9: Thermal Conductivities of Aqueous Tetraethylene Glycol Solutions

17 ......Figure 10: Dew Points of Aqueous Tetraethylene Glycol Solutions at Various Contact Temperatures

18 ......Figure 11: Refractive Indices of Pure Tetraethylene Glycol

19 ......Figure 12: Refractive Indices of Aqueous Tetraethylene Glycol Solutions at 77°F (25°C)

20......Figure 13: Surface Tensions of Pure Tetraethylene Glycol

21 ......Figure 14: Surface Tensions of Aqueous Tetraethylene Glycol Solutions at 77°F (25°C)

22 ......Figure 15: Electrical Conductivities of Aqueous Tetraethylene Glycol Solutions

23 ......Figure 16: Conversion Chart for Aqueous Solutions of Tetraethylene Glycol

24 Health Effects24 Environmental Information

1

25 Storage and Handling25 Shipping Data26 Product Safety27 Emergency Service28 Sales Office

IntroductionPrecautions:

Carefully review our current Material Safety Data Sheet.

Tetraethylene Glycol Formula

C8H18O5

Molecular FormulaHOCH2CH2OCH2CH2OCH2CH2OCH2CH2OH

CAS Registry Number112-60-7

Synonyms2,2’-[oxybis(ethyleneoxy)]diethanol2,2’-[oxybis(2,1-ethanediyloxy)]bis-ethanolTetraglycolTETRATTEGT4EGTetraEG

Tetraethylene glycol is a transparent, colorless,practically odorless, low-volatility, moderate-viscosity, hygroscopic liquid. It is completelymiscible with water and many organic liquids.Tetraethylene glycol has properties similar todiethylene and triethylene glycols and may be usedpreferentially in applications requiring a higherboiling point, higher molecular weight or lowerhygroscopicity.

The hydroxyl groups on tetraethylene glycolundergo the usual alcohol chemistry, giving a widevariety of possible derivatives. Hydroxyls can beconverted to aldehydes, alkyl halides, amines,azides, carboxylic acids, ethers, mercaptans,nitrate esters, nitriles, nitrite esters, organic esters,peroxides, phosphate esters and sulfate esters.

Tetraethylene glycol may be used directly as aplasticizer or modified by esterification. Thesolubility properties of tetraethylene glycol areimportant for many applications. The end uses fortetraethylene glycol are numerous. (See Table 1.)


Service . . .For solutions to problems or answers to questions,take advantage of Dow’s technical service andsupport, available through trained sales representativesas well as a skilled staff from our Research andDevelopment Department. Your order of tetraethyleneglycol will be processed expertly and quickly whenyou place a call to one of our many helpful customerservice representatives. (See page 28.)

Dow . . . Your best source

Dow is the world’s largest producer of ethyleneoxide and glycols with more than 70 years of experience in their manufacture, marketing, and research and development. The uniform implementation of statistical process control at allour plants enables us to consistently deliver thehigh-quality product you require. Our total approachto Quality and Quality Systems is continuouslyimproved to ensure that our facilities meet therequirements for registration to the stringent ISO9002 series of standards.

Optimum performance demands a quality product,and that is what we deliver.

2

for Tetraethylene GlycolQuality…


Table 1: Applications

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)

BTX • Separation of aromatic hydrocarbons from non-aromatic hydrocarbons (BTX extraction with Tetraethylene Glycol)

Low Volatility • Gas dehydration

Solvent • Resin impregnants and other additives• Steam-set printing inks• Aromatic and paraffinic 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• Esterification products used in plasticizer

intermediates for nitrocellulose lacquers and vinyl resins

• Polyester polyols for polyurethanes• Thermoplastic polyurethanes• Silcone compounds• Emulsifiers• Lubricants

Freezing Point Depression • Heat transfer fluids

3

The Dow Chemical Company Tetraethylene Glycol Product Guide4

Product Stewardship Guidelines and Principles ofThe Dow Chemical CompanyThe following bullet points identify some applications that are NOT supported by Dow for EGProducts on a go-forward basis. The reasons for these limitations include areas in which we havedecided not to pursue for general business reasons and actions which would minimize unnecessaryrisk and liabilities to the business. In addition, the following list of uses not supported by Dow doesnot imply a Dow warranty or Dow support of uses in applications not covered by this list. This listis 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 manufacture of tobaccoproducts (including but not limited to additives, humectants, filters, inks, and paper) is not supported by Dow.

• The use of Dow EG Products for the generation of artificial smoke / theatrical fogs / mist is notsupported by Dow.

• The use of Dow EG Products as ingredient in fuel for warming foods (SternoTM-like application)or in fuel for heating an enclosed space where human exposure is possible is not supported by Dow.

• The use of Dow EG Products in fire extinguishing sprinkler systems is not supported by Dow. • The use of Dow EG Products in the manufacture of munitions is not supported by Dow.• The use of Dow EG Products in the production of deicers for use on roadways and sidewalks is

not supported by Dow.• The use of Dow EG Products as a component of heat transfer fluids in systems where the heat transfer fluid could infiltrate (i.e., via an exchanger leak, backflow prevention failure, or other means) a potable water system is not supported by Dow. • The use of Dow EG Products, purposely, as a non-reacted component in a formulation for direct internal

or external human contact, including, but not limited to ingestion, inhalation, and skin contact and inthe manufacture of medical devices is not supported by Dow. (Examples of some such applica-tions are uses as a direct component in foods, beverages, pharmaceuticals, cosmetics, or personalcare products.)

• The use of Dow EG Products for hospital or consumer deodorizing or air “purifying” purposes by spraying as an aerosol is not supported by Dow. • The use of Dow EG Products as a non-reacted component in adhesives, plasticizers, and softening

agents for packaging that has direct contact with food or beverages is not supported by Dow.

To enter into new applications beyond the traditional standard industrial use applications, contact your Dow representative to review the specific application. Dow has a risk assessment process whereby the application will be reviewed and a determination 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 OR 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 (1-800-447-4369). We can never specify all circumstances where misuse might occur, so if at anytime a customer or downstream use appears to be improper or unsafe,please contact our Product Steward, Larry Bradford at(225) 353-6122.


PropertiesTable 2: Physical Properties of Tetraethylene GlycolDetermined on purified samples of Tetraethylene GlycolProperty Scientific Units Common UnitsAutoignition Temperature 358°C 676°F

Boiling Point at 10 mmHg 190°C 374°F

Boiling Point at 50 mmHg 231°C 448°F

Boiling Point at 760 mmHg 329.7°C (decomposes) 625.5 °F (decomposes)

Critical Pressure 2,590 kPa 19,430 mmHg

Critical Specific Volume 0.564 L/gmol 9.03 ft3/lbmol

Critical Temperature 522°C 971.6°F

Dielectric Constant 15.7 15.7

Electrical Conductivity 0.16 micromhos/m 0.0016 micromhos/cm

Evaporation Rate (Butyl Acetate = 1) <0.01 <0.01

Flash Point, Clevland Open Cup ASTM D 92 204°C 400°F

Fash Point, Pensky-Marten Closed Cup ASTM D 93 202°C 395°F

Freezing Point -4.1°C 24.6°F

Heat of Combustion at 25°C -4,664 kJ/gmol -10,310 Btu/lb

Heat of Vaporization 62.9 kJ/gmol 139 Btu/lb

Molecular Weight 194.23g/mol 194.23g/mol

Onset of Initial Decomposition 240°C 464°F

Refractive Index, nD, 20°C 1.4598 1.4598

Solubility in Water at 20°C, wt% 100% 100%

Solubility of Water in Tetraethylene Glycol at 20°C, wt% 100% 100%

Specific Gravity, 20/20°C 1.1247 1.1247

∆ Specific Gravity vs. ∆ Temperature (10 - 40°C) 0.00080/°C 0.00080/°C

Surface Tension 44.0 mN/m 44.0 dynes/cm

Vapor Density (Air = 1) 6.7 6.7

Vapor Pressure at 20°C <0.001 kPa <0.01 mmHg

Viscosity at 20°C 58.3 mPs 58.3 cP

5


Table 3: Solubilities of Various Materials in Tetraethylene GlycolSolubility, g/100 ml of Glycol at 25°C Acetone Completely Soluble Lard Oil Slightly Soluble

Animal Glue (Dry) Slightly Soluble Linseed Oil Slightly Soluble

Benzene Completely Soluble Methanol Completely Soluble

Carbon Tetrachloride 62.0 Monoethanolamine Completely Soluble

Castor Oil Slightly Soluble oo-Dichlorobenzene Completely Soluble

Coconut Oil Slightly Soluble Olive Oil Slightly Soluble

Cottonseed Oil Slightly Soluble Paraffin Oil Slightly Soluble

Dextrin Slightly Soluble Phenol Completely Soluble

Dibutyl Phthalate Completely Soluble Pine Oil Completely Soluble

Dichloroethyl Ether Completely Soluble Shellac Slightly Soluble

Diethanolamine Completely Soluble Soya Bean Oil Slightly Soluble

Ethanol Completely Soluble Sperm Oil Slightly Soluble

Ethyl Ether 20.0 Tall Oil Slightly Soluble

Gum Damar Slightly Soluble Toluene 89.0

Heptane Slightly Soluble Tung Oil Slightly Soluble

Hydrous Wool Fat Slightly Soluble Turkey Red Oil 1**

Kauri Gum 16.0* Urea 28.0

* Too viscous to stir beyond 16%** Forms stable emulsion from this concentration to 100%

6


Table 4: Tetraethylene Glycol Compatibility with Elastomeric Materials

Temperature

Material 25°C (77°F) 80°C (176°F) 160°C (320°F)Adiprene™ L-100 Good Poor Poor

Black Rubber 3773 Good Poor Poor

Buna N (or 25) Good Good

Buna S Good Fair Poor

Butyl Rubber Good Good

Compressed Asbestos Good Good Fair

EPDM Good Good Good

EPR Rubber Good Good Good

Hycar™ D-24 Good Fair

Hypalon™ Good Poor Poor

Kalrez™ Good Good Good

Natural Rubber Gum Good Poor Poor

Neoprene 7797 Good Fair

Red Rubber Number 107 Good Poor Poor

Saraloy™ 300 Good Poor Poor

Silicone No. 65 Good Good

Thiokol™ 3060 Good Poor Poor

Viton™ A Good Good Poor

7


Figure 1: Freezing Points of Aqueous Tetraethylene Glycol Solutions

0 10 20 30 40 50 60 70 80 90 100–40

–30

–20

–10

0

–30

–20

–10

0

10

20

30

40

50

60

10

20

Tetraethylene Glycol, Percent by Weight in Water

Tem

pera

ture

, ˚C

Tem

pera

ture

, ˚F

8


Figure 2: Boiling Points vs. Composition of Aqueous Tetraethylene Glycol Solutions at Various Pressures

0 10 20 30 40 50 60 70 80 90 1000

50

100

150

200

40

80120160200240

280320

440

480520560600640

680720

360400

250

350

300

400


Tem

pera

ture

, ˚C

Tem

pera

ture

, ˚F

9

*2 atmospheres absolute, 1 atmosphere gauge

1520 mm Hg*

760 mm Hg300 mm Hg


Figure 3: Condensation Temperatures vs. Composition of AqueousTetraethylene Glycol Solutions at Various Pressures

0 10 20 30 40 50 60 70 80 90 1000

50

100

150

200

40

80120160200240

280320

440

480520560600640

680720

360400

250

350

300

400


Tem

pera

ture

, ˚C

Tem

pera

ture

, ˚F

10

*2 atmospheres absolute, 1 atmosphere gauge

760 mm Hg

300 mm Hg

1520 mm Hg*


Figure 4: Vapor Pressures of Tetraethylene Glycol at Various Temperatures

Tetraethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Equation (Temperature Range = 190 - 330°C)

A=7.3101 Range = 190 - 330°CB=2076.0 P = mm HgC=139.0 T = °CLog10 (P) = A – B/(T + C)

5-Constant Equation (Temperature Range = 463 - 636°K)A=144.00639 Range = 463 - 636KB=17009.675 P = PaC=0.0 T = KelvinD=–16.30747E=0.1964355 x 10-29

N=10ln(P) = A – B/(T + C) + D(ln(T)) + ETN

160

320 360 400 440 480 520 560 600 640 720

180 200 220 240 280 320 360 4001

3

6

10

2

60

100

2030

Temperature, ˚C

Temperature, ˚F

Vapo

r P

ress

ure,

mm

Hg

600

1000

200300

Tetraethylene GlycolAntoine Constants A=7.3101 B=2076.0 C=139.0

Log(P)=A–B/(t+C)mmHg, log 10, ˚C

11


Figure 5: Vapor Pressures of Aqueous Tetraethylene GlycolSolutions at Various Temperatures

Tetraethylene Glycol Antoine Constants for Calculating Vapor Pressure3-Constant Antoine EquationLog10 (P) = A – B/(T + C)

P = mm Hg, T = °C

TetraEG, Wt% A B C 0 7.959199 1663.545 227.57550 7.873345 1636.389 225.21970 7.848323 1648.782 226.30180 7.825422 1665.432 227.73490 7.780251 1713.096 231.85295 7.307193 1543.725 216.98697 7.329127 1645.512 225.83798 7.124137 1602.032 221.24399 6.789910 1555.196 216.34199.5 7.011118 1910.979 252.754100 7.310182 2075.967 139.005

–10 0 10 20 30 40 60 80 100 120 160 200–20

0 20 40 80 120 160 200 240 320 400

0.1

0.20.40.6

1

246

10204060

100

200400600

1,000

2,0004,0006,000

10,000

100

99.59998979590

Temperature, ˚C

Temperature, ˚F

Vapo

r P

ress

ure,

mm

Hg

Tetr

aeth

ylen

e G

lyco

l, P

erce

nt b

y W

eigh

t in

Wat

er

050

7080

Freezing PointCurves

12


Figure 6: Specific Gravities of Aqueous Tetraethylene Glycol Solutions

Specific Gravity at T/60°F = A + Bx + Cx2 + Dx3

x = Weight % Tetraethylene Glycol

T, °F A B C D-50 1.05640 7.5641E-7 4.0919E-5 -2.8619E-70 1.03750 2.5720E-4 3.3614E-5 -2.4276E-750 1.01860 5.1746E-4 2.6173E-5 -1.9836E-7100 0.99475 1.0756E-3 1.3584E-5 -1.2727E-7150 0.98275 9.0500E-4 1.3921E-5 -1.2557E-7200 0.96482 1.1059E-3 7.5105E-6 -8.6531E-8250 0.94294 1.5448E-3 -3.0186E-6 -2.6118E-8300 0.91908 2.1030E-3 -1.5607E-5 4.4972E-8

10 20 30 40 50 60 70 80 90 10000.90

0.92

0.94

0.96

0.98

1.00

1.02

1.04

1.06

1.08

1.10

1.12

1.14

1.16

1.18

1.20


App

aren

t Spe

cific

Gra

vity

, T/6

0˚F

50˚F

0˚F

50˚F

100˚F

150˚F

200˚F

250˚F250˚F

300˚F

Freezing Point Curves

13


Figure 7: Viscosities of Aqueous Tetraethylene Glycol Solutions

Log10 (Viscosity, cP) = A + Bx + Cx2 + Dx3

x = Weight % Tetraethylene Glycol

T, °F A B C D0 0.58056 0.016062 2.8935E-4 -2.0327E-650 0.12569 0.012863 2.0877E-4 -1.4708E-6100 -0.16359 0.011229 1.4522E-4 -1.0089E-6150 -0.37589 0.013718 -5.0558E-7 0.0200 -0.51722 0.011518 4.5062E-6 0.0250 -0.62510 0.009805 8.8685E-6 0.0300 -0.71012 0.008434 1.2644E-5 0.0

10 20 30 40 50 60 70 80 90 10000.1

0.20.40.6

1

246

10

204060

100200400600

1000

200040006000

10,000


Vis

cosi

ty, c

entip

oise

s (c

P)

0˚F

300˚F250˚F

200˚F

150˚F

100˚F

50˚F


14


Figure 8: Specific Heats of Aqueous Tetraethylene Glycol Solutions

Specific Heat = A + BT + CT2

T = Temperature, °C

TetraEG, Wt% A B C 0 1.03210 -7.3306E-4 4.6741E-610 0.99642 -3.5754E-4 3.3173E-620 0.95633 -2.0686E-5 2.1006E-630 0.91178 2.7753E-4 1.0241E-640 0.86278 5.3709E-4 8.7771E-850 0.80933 7.5801E-4 -7.0840E-760 0.75142 9.4028E-4 -1.3644E-670 0.68905 1.0839E-3 -1.8802E-680 0.62224 1.1889E-3 -2.2559E-690 0.55096 1.2552E-3 -2.4913E-6100 0.47524 1.2829E-3 -2.5866E-6

0 50 100 150 200-50

-40 0 40 80 120 160 200 240 280 320 360

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

Temperature, ˚C

Temperature, ˚F

Spe

cific

Hea

t, B

tu/l

b/˚F

Tetr

aeth

ylen

e G

lyco

l, P

erce

nt b

y W

eigh

t in

Wat

er

100˚F

90˚F

0˚F10˚F20˚F30˚F40˚F

50˚F

60˚F

70˚F

80˚F


15


Figure 9: Thermal Conductivities of Aqueous Tetraethylene Glycol Solutions

Thermal Conductivity = A + BT + CT2

T = Temperature, °C

TetraEG, Wt% A B C 0 0.34050 8.3720E-4 -3.1752E-610 0.30781 1.0159E-3 -3.7379E-620 0.26989 8.4718E-4 -3.0501E-630 0.23613 7.1079E-4 -2.5485E-640 0.20764 5.5221E-4 -1.9166E-650 0.18057 4.6476E-4 -1.6124E-660 0.15841 3.2952E-4 -1.1049E-670 0.13906 2.4455E-4 -7.4414E-780 0.12257 1.8147E-4 -4.7922E-790 0.10979 1.4412E-4 -3.6641E-7100 0.09665 5.3497E-6 1.6290E-7

0 20 40 60 80 100 120 140 160 180 200-20

0 40 80 120 160 200 240 280 320 360

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

Temperature, ˚C

Temperature, ˚F

Ther

mal

Con

duct

ivity

, Btu

(ft)

/hr

(ft2 ) ˚

F

Tetr

aeth

ylen

e G

lyco

l, P

erce

nt b

y W

eigh

t in

Wat

er

10

20

30

40

50

60708090

100

0


16


Figure 10: Dew Points of Aqueous Tetraethylene Glycol Solutions at Various Contact Temperatures

Dew or Frost Point = A + BT T = Temperature, °C

TetraEG, Wt% A B50 -2.8609 0.9715270 -6.8048 0.9336180 -10.550 0.8989390 -17.526 0.8370895 -24.653 0.7770298 -33.763 0.7043599 -40.258 0.6551199.5 -46.379 0.61055

-20 -10 0 10 20 30 40 50-30

-20 0 20 40 60 80 100 120

-50

-40

-30

-20

-10

0

10

20

30

40

50

60

Contact Temperatures of Solution, ˚C

Contact Temperatures of Solution, ˚F

Fros

t Poi

nt, ˚

FD

ew P

oint

, ˚F

Fros

t Poi

nt, ˚

CD

ew P

oint

, ˚C

-50-40-30-20-10

01020304050

50

60408090

100110120130140


Tetraethylene Glycol,Percent by Weight in Water

7080

90

95

98

99

99.5

17


Figure 11: Refractive Indices of Pure Tetraethylene Glycol

Refractive Index = 1.4675 – 0.00038TT = Temperature, °C

25 30 35 40 45 5020

70 80 90 100 110 120

1.448

1.450

1.452

1.454

1.456

1.458

1.460

1.462

Temperature, ˚C

Temperature, ˚F

Ref

ract

ive

Inde

x

18


Figure 12: Refractive Indices of Aqueous Tetraethylene Glycol Solutions at 77°F (25°C)

Refractive Index, 77°F (25°C) = 1.3325 + 0.0012540xx = Weight % Tetraethylene Glycol

20 40 60 80 10001.30

1.32

1.34

1.36

1.38

1.40

1.42

1.44

1.46

1.48

1.50


Ref

ract

ive

Inde

x

19


Figure 13: Surface Tensions of Pure Tetraethylene Glycol

Surface Tension, dynes/cm = 46.580 – 0.10523TT = Temperature, °C

50 100 1500

40 80 120 200160 240 280

30

32

34

36

38

40

42

44

46

48

50

Temperature, ˚C

Temperature, ˚F

Sur

face

Ten

sion

, dyn

es/c

m

20


Figure 14: Surface Tensions of Aqueous Tetraethylene Glycol Solutions at 77°F (25°C)

20 40 60 80 100030

35

40

45

50

55

60

65

70

75

80


Sur

face

Ten

sion

, dyn

es/c

m

21


Figure 15: Electrical Conductivities of Aqueous Tetraethylene Glycol Solutions

Note: The quality of the water used for dilution can significantly affect theelectrical conductivity.

20 40 60 80 10000

5

10

15

20

25


Ele

ctric

al C

ondu

ctiv

ity, m

icro

mho

s/cm

22


Figure 16: Conversion Chart for Aqueous Solutions of Tetraethylene Glycol.

0 10 20 30 40 50 60 70 80 90 1000

10

20

30

40

50

60

70

80

90

100

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Tetraethylene Glycol, Percent by Weight

Volu

me

Per

cent

Tet

raet

hyle

ne G

lyco

l

Mol

e Fr

actio

n Te

trae

thyl

ene

Gly

col

Volume Percent vsWeight Percent

Mole Fraction vsWeight Percent

23


Health EffectsSee our current Material Safety Data Sheet (MSDS) for the most current exposure limits, health, first aid, andtoxicology information.

Environmental Information

24

See our current MSDS for current toxicity information.

Biodegradation For information concerning the biodegradability of Tetraethylene Glycol, please refer to the latest MaterialSafety Data Sheet.


Storage and Handling This information is offered as a guide in planningbulk storage facilities for glycols. Glycols aregenerally considered to be stable, non-corrosivechemicals with high flash points. Under ordinaryconditions, all of these chemicals can be stored inmild steel vessels. For long-term storage, or if traceiron contamination and the development of colorare objectionable in any of the glycols, a storagevessel lined with a baked-phenolic resin, an air-drying epoxy-phenolic resin, or a vinyl resin or astainless steel or aluminum tank is suggested. Zincor galvanized iron is not recommended, andcopper or copper alloys may cause productdiscoloration.

It is not general practice to use an inert gas in thevapor space of glycol storage tanks, because allchemicals in this family have high boiling pointsand the vapors in the tanks are relatively non-flammable. However, if extremely low watercontent is required, consistent with a long storageperiod, a nitrogen blanket can be used to excludeatmospheric moisture and air. Blanketing withnitrogen will also minimize low-level oxidation, ifnecessary for the desired application. The inertgas prevents air oxidation in order to maintainproduct within acidity specifications. Increasedacidity enhances iron pickup from steel vessels.Alternatively, a desiccant unit can be installed onthe tank vent line to dry incoming air.

If above ground outside storage is planned, it maybe necessary to install provisions for heating tanksand lines. Many glycols have a moderately highfreezing point or become relatively viscous atsevere winter temperatures. However, excessivetemperature can cause undesirable degradation ofglycols. Automatic controls are suggested to limitthe temperature of the contents to 120°F (49°C).

In cold climates, it is generally desirable to makeprovisions for draining the pump and the transferlines if they are outside the building. If this is notfeasible, it may be necessary to insulate and steamtrace or otherwise heat the transfer lines toprevent freezing of the product. Care must betaken in such an application, because continuedexposure of glycols to high temperatures greater

than 120°F (49°C) will result in productdegradation. Transfer piping of mild steel isgenerally used.

Shipping DataShipping Data for Tetraethylene GlycolWeight per Gallon at 20°C 9.37 lb

Coefficient of Expansion at 55°C 0.00075

Flash Point, Pensky-Martens Closed Cup 395°F

Net Contents and Type of Container

• 1-Gallon Tin Can 9.0 lb

• 5-Gallon DOT 17E, Pail 47 lb

• 55-Gallon DOT 17E, Drum 522 lb

Tetraethylene glycol is not regulated by the U.S. Department of Transportation; therefore, it does not have a DOT Shipping Name, Hazard Classification, DOT Warning Label,or Identification Number.

25

Product Safety


When considering the use of tetraethylene glycol in any particular application, review and under-stand our current Material Safety Data Sheet forthe necessary safety and health information. ForMaterial Safety Data Sheets and other productsafety information on Dow products, contact TheDow Chemical Company sales office nearest you.Before handling any products mentioned in thisbooklet, you should obtain the available productsafety information from the suppliers of thoseproducts and take the necessary steps to complywith all precautions regarding the use oftetraethylene glycol.

No chemical should be used as or in a food, drug,medical device, or cosmetic, or in a productprocess in which it may come in contact with a food, drug, medical device, or cosmetic untilthe user has determined the suitability of the use.Because use conditions and applicable laws maydiffer from one location to another and maychange with time, Customer is responsible fordetermining whether products and the informationin this document are appropriate for Customer’suse and for ensuring that Customer’s workplaceand disposal practices are in compliance withapplicable laws and other governmental enactments.

Dow requests that the customer read, understand,and comply with the information contained inthis publication and the current Material DataSafety Sheet(s). The customer should furnish theinformation in this publication to its employees,contractors, and customers, or any other users ofthe product(s), and request that they do the same.


Emergency ServiceThe Dow Chemical Company maintains an around-the-clock emergency service for its products. The ChemicalManufacturers Association (CHEM/TREC), Transportation Canada (CANUTEC) and the ChemicalEmergency Agency Service maintain an around-the-clock emergency service for all chemical products.

Alaska and Hawaii Phone Mainland United States: Phone CHEMTREC:(304) 744-3487(collect) (800) 424-9300 (toll-free)

Canada Phone Dow: Phone CANUTEC:(514)-640-6400 (collect) (613) 996-6666 (collect)

Continental Europe, Phone BIG (Geel-Belgium): Phone CHEMTREC (United States):Middle East, North and (32) 0-14-58-45-45 (703) 527-3887 (collect)Central Africa

United Kingdom and Ireland Phone National Chemical Phone CHEMTREC (United States):Emergency Center (Culham-UK): (703) 527-3887 (collect)(44)(0) 1865-407-333

Latin America, Asia/Pacific, Phone United States: Phone CHEMTREC (United States):South Africa and any other (304) 744-3487 (collect) (703) 527-3887 (collect)location, worldwide

If you are at sea Radio U.S. Coast Guard, who can directly contact Dow HELP (800) 822-4357 (toll-free) or CHEMTREC (800) 424-9300 (toll-free)

DO NOT WAIT. Phone if in doubt. You will be referred to a specialist for advice.

Mainland United States Phone Dow HELP: Phone CHEMTREC:and Puerto Rico

All Chemical ProductsLocation Dow Products

(800) 822-4357 (800) 424-9300 (toll-free)(toll-free)

27

Sales OfficeFor additional information, contact our customer service center:

The Dow Chemical Company2040 Dow CenterMidland, MI 48674www.dow.comPh: (800) 232-2436


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, Customeris 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 compliancewith 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 EXCLUDED.

Printed in U.S.A. *Trademark of The Dow Chemical Company Form No. 612-00005-0704XPublished June 2003

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