DIPROPYLENE GLYCOL

CAS No.: 25265-71-8
EC No.: 219-251-4

Synonyms:
DIPROPYLENE GLYCOL; dipropylene glycol; 1,1'-oxy di-2-propanol; 2,2'- dihydroxydipropyl ether; 2,2'- dihydroxyisopropyl ether; 1,1'- dimethyl diethylene glycol; DIPG; 3,3'-oxy dipropan-1-ol; 3,3'-oxy dipropanol; oxy dipropanol; 1,3- dipropylene glycol; 1,2- dipropylene glycol ethers; dipropyleneglycol; dipropylenglykol; DPG; 1-(2- hydroxypropoxy) propan-2-ol; 3-(3- hydroxypropoxy)propan-1-ol; bis(2- hydroxypropyl) ether; 2-(2- hydroxypropyl)-1-methyl ethanol; hydroxyprpyl oxypropanol; oxybis propanol; propanol, 3,3'-oxybis-; 1- propanol, 3,3'-oxybis-; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; 1,1'-Oxybis(2-propanol); 4-Oxa-2,6-heptandiol; ADK DPG-RF; Caswell No. 399E; CCRIS 475; Dipropylene glycol; Dipropyleneglycol; Dipropylenglykol; Dowanol DPG; DPG-FC; DPG-RF; EC 246-770-3; EINECS 246-770-3; EPA Pesticide Chemical Code 068604; HSDB 2658; Oxybispropanol; Propanol, oxybis-; UNII-E107L85C40; DSSTox_CID_5186; DSSTox_RID_78591; DSSTox_GSID_27856; CAS-25265-71-8; oxypropyl ether; Oxydipropanol.; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; 1-(1-hydroxypropoxy)propan-1-ol; NCGC00090688-01; SCHEMBL93793; [DID-no:2584]; CHEMBL1375124; Tox21_202321; Tox21_300565; NCGC00090688-02; NCGC00163761-01; NCGC00163761-02; NCGC00163761-03; NCGC00254428-01; NCGC00259870-01; NS00006941; J-015898; 479483-65-3; oxydipropanol;oxybis-propano; oxybispropanol; HOSTALUXPNFLUID; oxybis-Propanol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; Propanol, oxybis-; DIPROPYLENE GLYCOL; Dipropylene isomers; DIPROPYLENE GLYCOL LO+; BIS(HYDROXYPROPYL) ETHER; Dipropylene Glycol; Dipropylene glycol; Oxydipropanol (DPG-RF); Oxydipropanol; 246-770-3; Dipropylene Glycol; Oxydiproanol; dipropylene glycol; phthalic anhydride; DIPROPYLENE GLYCOL; Oxydipropanol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; oxydipropanol (Boundary composition); oxydipropanol; DipropyleneGlycol; Standard composition; Oxydipropanol (DPG); Composition 17; oxydipropanol; Oxydipropanol; Dipropylene glycol; Oxydipropanol; DPG; Legal Entity Composition; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; Oxidipropanol; Composition 25; Dipropyleneglycol; Dipropyleneglycol; Agent I858; Bis(hydroxypropyl) ether; DPG; Propanol, oxybis-; dipropylene glycols,mixture of; oxydipropanol; Dipropylene Glycol; oxybis-Propanol; Dipropyleneglycol,MixedIsomers,~98%; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; DipropyleneGlycol,Certified; β,β-dihydroxydi-n-propyl ether; HOSTALUXPNFLUID; 1-(1-Hydroxypropoxy)propan-1-ol; Dipropylene glycol, 99%, mixture of isomeric propylene glycol ethers; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL LO+; Dipropylene glycol, Mixture of isoMeric propylene glycol ethers, 99% 1KG; 4-Oxa-2,6-heptandiol; 4-Oxa-1,7-heptandiol; 1,1'-Oxybis(1-propanol); 1,1'-Oxybis(2-propanol); DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; 1,1'-oxy di-2-propanol; 2,2'- dihydroxydipropyl ether; 2,2'- dihydroxyisopropyl ether; 1,1'- dimethyl diethylene glycol; DIPG; 3,3'-oxy dipropan-1-ol; 3,3'-oxy dipropanol; oxy dipropanol; 1,3- dipropylene glycol; 1,2- dipropylene glycol ethers; dipropyleneglycol; dipropylenglykol; DPG; 1-(2- hydroxypropoxy) propan-2-ol; 3-(3- hydroxypropoxy)propan-1-ol; bis(2- hydroxypropyl) ether; 2-(2- hydroxypropyl)-1-methyl ethanol; hydroxyprpyl oxypropanol; oxybis propanol; propanol, 3,3'-oxybis-; 1- propanol, 3,3'-oxybis-; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; 1,1'-Oxybis(2-propanol); 4-Oxa-2,6-heptandiol; ADK DPG-RF; Caswell No. 399E; CCRIS 475; Dipropylene glycol; Dipropyleneglycol; Dipropylenglykol; Dowanol DPG; DPG-FC; DPG-RF; EC 246-770-3; EINECS 246-770-3; EPA Pesticide Chemical Code 068604; HSDB 2658; Oxybispropanol; Propanol, oxybis-; UNII-E107L85C40; DSSTox_CID_5186; DSSTox_RID_78591; DSSTox_GSID_27856; CAS-25265-71-8; oxypropyl ether; Oxydipropanol.; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; 1-(1-hydroxypropoxy)propan-1-ol; NCGC00090688-01; SCHEMBL93793; [DID-no:2584]; CHEMBL1375124; Tox21_202321; Tox21_300565; NCGC00090688-02; NCGC00163761-01; NCGC00163761-02; NCGC00163761-03; NCGC00254428-01; NCGC00259870-01; NS00006941; J-015898; 479483-65-3; oxydipropanol;oxybis-propano; oxybispropanol; HOSTALUXPNFLUID; oxybis-Propanol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; Propanol, oxybis-; DIPROPYLENE GLYCOL; Dipropylene isomers; DIPROPYLENE GLYCOL LO+; BIS(HYDROXYPROPYL) ETHER; Dipropylene Glycol; Dipropylene glycol; Oxydipropanol (DPG-RF); Oxydipropanol; 246-770-3; Dipropylene Glycol; Oxydiproanol; dipropylene glycol; phthalic anhydride; DIPROPYLENE GLYCOL; Oxydipropanol; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; oxydipropanol (Boundary composition); oxydipropanol; DipropyleneGlycol; Standard composition; Oxydipropanol (DPG); Composition 17; oxydipropanol; Oxydipropanol; Dipropylene glycol; Oxydipropanol; DPG; Legal Entity Composition; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; Oxidipropanol; Composition 25; Dipropyleneglycol; Dipropyleneglycol; Agent I858; Bis(hydroxypropyl) ether; DPG; Propanol, oxybis-; dipropylene glycols,mixture of; oxydipropanol; Dipropylene Glycol; oxybis-Propanol; Dipropyleneglycol,MixedIsomers,~98%; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL; dipropylene glycol; DipropyleneGlycol,Certified; β,β-dihydroxydi-n-propyl ether; HOSTALUXPNFLUID; 1-(1-Hydroxypropoxy)propan-1-ol; Dipropylene glycol, 99%, mixture of isomeric propylene glycol ethers; DIPROPYLENE GLYCOL; dipropylene glycol; DIPROPYLENE GLYCOL LO+; Dipropylene glycol, Mixture of isoMeric propylene glycol ethers, 99% 1KG; 4-Oxa-2,6-heptandiol; 4-Oxa-1,7-heptandiol; 1,1'-Oxybis(1-propanol); 1,1'-Oxybis(2-propanol); DIPROPYLENE GLYCOL; dipropylene glycol; 34590-94-8; 2-méthoxyméthyléthoxy)propanol; 3-(3-METHOXYPROPOXY) 1-PROPANOL; 3-(3-METHOXYPROPOXY)-1-PROPANOL; Dipropylene glycol methyl ether; dipropilen glikol; Dıpropılen glykol
 

DIPROPYLENE GLYCOL

Dipropylene glycol

Dipropylene glycol
Dipropylene glycol.svg
Names
IUPAC names
4-Oxa-2,6-heptandiol and
4-Oxa-1,6-heptandiol
Other names
1,1'-Oxybis(1-propanol) and
1,1'-Oxybis(2-propanol)
Identifiers
CAS Number    
25265-71-8 check
3D model (JSmol)    
Interactive image
4-oxa-2,6-heptandiol: Interactive image
ChemSpider    
5020642 ☒
ECHA InfoCard    100.042.504 Edit this at Wikidata
EC Number    
219-251-4
PubChem CID    
32857
UNII    
S1OQ81LMNA
CompTox Dashboard (EPA)    
DTXSID0027856 Edit this at Wikidata
InChI[show]
SMILES[show]
Properties
Chemical formula    C6H14O3
Molar mass    134.173 g/mol
Appearance    colorless liquid
Density    1.0206 g/cm3 at 20 °C
Boiling point    230.5 °C (446.9 °F; 503.6 K)[1]
Solubility in water    miscible with water, soluble in ethanol
Hazards
Safety data sheet    SIRI.org
NFPA 704 (fire diamond)    
NFPA 704 four-colored diamond
110
Flash point    121 °C (250 °F; 394 K)
Autoignition
temperature    310 °C (590 °F; 583 K)
Related compounds
Related compounds    Ethylene glycol
Propylene glycol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Dipropylene glycol is a mixture of three isomeric chemical compounds, 4-oxa-2,6-heptandiol, 2-(2-hydroxy-propoxy)-propan-1-ol, and 2-(2-hydroxy-1-methyl-ethoxy)-propan-1-ol. It is a colorless, nearly odorless liquid with a high boiling point and low toxicity.[2][3]

Uses
Dipropylene glycol finds many uses as a plasticizer, an intermediate in industrial chemical reactions, as a polymerization initiator or monomer, and as a solvent. Its low toxicity and solvent properties make it an ideal additive for perfumes and skin and hair care products. It is also a common ingredient in commercial fog fluid, used in entertainment industry fog machines.

Product Information
CAS number    25265-71-8
EC number    246-770-3
Hill Formula    C₆H₁₄O₃
Molar Mass    134.18 g/mol
HS Code    2909 49 80

DIPROPYLENE GLYCOL

Chemical Name: Dipropylene glycol

Dipropylene glycol [HO- (CH3-CHCH2O) 2-H] is a clear, colorless, slightly viscous liquid that is much less hygroscopic than other common glycols. It is an excellent solvent that is completely miscible with water and ethanol, benzene, toluene, castor oil, carbon tetrachloride, many organic compounds. Dipropylene glycol is also an excellent cross-solvent or co-solvent.

Dipropylene glycol is a dihydroxy alcohol and undergoes reactions peculiar to such compounds. Commercially of greatest importance are reactions in which various ether and ester derivatives are formed. Dipropylene glycol diesters prepared by the reaction of dipropylene glycol and acids can be used as cosmetic ingredients with plasticizers, fuel additives, resins and dyes. A particularly important reaction of dipropylene glycol is with unsaturated dibasic acids such as maleic acid or fumaric acid. The unsaturated polyester resins obtained can then be crosslinked with styrene.

Dipropylene glycol as a solvent is a component of hydraulic brake fluids, cutting oils and textile oils. Inks are an excellent solvent, especially for steam set types and those used in food packaging where there is no residue and odor.

Dipropylene glycol is stainless. It has low vapor pressure and high flash point. As a result, it is easily processed under ordinary commercial conditions. Mild steel is satisfactory for storage tanks except where color requirements are critical. Resin-lined steel, stainless steel or aluminum tanks provide protection against discoloration and small amounts of iron contamination. It is generally not necessary to cover storage tanks with inert gas.

Polyester resins prepared from dipropylene glycol tend to be more flexible and less crystalline than those prepared from ethylene glycol.

Dipropylene glycol polyesters are not as sensitive to water as diethylene glycol polyesters. Urethane ranging from rubbery plastic to foams is synthesized from diisocyanates and polyesters containing dipropylene glycol. The properties of urethanes are determined according to the ratio of acid and glycol used in the preparation of the polyester component. Urethanes have end uses as adhesives, elastomers, foams, molding compounds and surface coatings.

Usage areas

Dipropylene glycol is used as a heat transfer fluid for both low and high temperature applications.
It is used as a high temperature reaction medium in the synthesis of some drugs and also as an antifreeze.
Dipropylene glycol has germicidal properties and can be used as an air purifying agent.
It is used as a solvent in many industries.
Dipropylene glycol finds application mainly in the production of industrial intermediates, unsaturated polyester resins, plasticizers, alkyd resins, cosmetics and urethane polyols, and is used as an additive in the formulations of antifoam agents, industrial soaps and functional fluids.
Dipropylene glycol; It is a solvent and is used as a moisturizing agent that acts as a diluent and / or carrier in fragrance and deodorant applications and is involved in diluting fragrance oils.
Dipropylene glycol; It acts as an additive in many cosmetic product formulations such as hair care and bath products, deodorants, shaving and skin care products.
Propylene glycol, dipropylene glycol and tripropylene glycol; solvent, softener, emulsion stabilizer or viscosity modifier in fragrance, cosmetic and personal care products; humectant due to its hygroscopic nature and ability to hold water; many are used to protect against bacterial and fungal species.
In skin care products such as cream, moisturizer, cleanser, lotion, sun care products; in deodorants; in hair care products such as shampoo, coloring products; in shaving products such as creams, mousses, gels and aftershave lotions; in bath and shower products; in perfumes and colognes; in baby care products; It is used in cosmetic products such as eyeliner and lipstick, and in oral care products such as mouthwash and toothpaste.

Dipropylene glycol
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Dipropylene glycol
Dipropylene glycol.svg
Names
IUPAC names
4-Oxa-2,6-heptandiol and
4-Oxa-1,6-heptandiol
Other names
1,1'-Oxybis(1-propanol) and
1,1'-Oxybis(2-propanol)
Identifiers
CAS Number    
25265-71-8 check
3D model (JSmol)    
Interactive image
4-oxa-2,6-heptandiol: Interactive image
ChemSpider    
5020642 ☒
ECHA InfoCard    100.042.504 Edit this at Wikidata
EC Number    
219-251-4
PubChem CID    
32857
UNII    
S1OQ81LMNA
CompTox Dashboard (EPA)    
DTXSID0027856 Edit this at Wikidata
InChI[show]
SMILES[show]
Properties
Chemical formula    C6H14O3
Molar mass    134.173 g/mol
Appearance    colorless liquid
Density    1.0206 g/cm3 at 20 °C
Boiling point    230.5 °C (446.9 °F; 503.6 K)[1]
Solubility in water    miscible with water, soluble in ethanol
Hazards
Safety data sheet    SIRI.org
NFPA 704 (fire diamond)    
NFPA 704 four-colored diamond
110
Flash point    121 °C (250 °F; 394 K)
Autoignition
temperature    310 °C (590 °F; 583 K)
Related compounds
Related compounds    Ethylene glycol
Propylene glycol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Dipropylene glycol is a mixture of three isomeric chemical compounds, 4-oxa-2,6-heptandiol, 2-(2-hydroxy-propoxy)-propan-1-ol, and 2-(2-hydroxy-1-methyl-ethoxy)-propan-1-ol. It is a colorless, nearly odorless liquid with a high boiling point and low toxicity.[2][3]

Uses
Dipropylene glycol finds many uses as a plasticizer, an intermediate in industrial chemical reactions, as a polymerization initiator or monomer, and as a solvent. Its low toxicity and solvent properties make it an ideal additive for perfumes and skin and hair care products. It is also a common ingredient in commercial fog fluid, used in entertainment industry fog machines.[2][3][4]

Dipropylene Glycol
Messages
Overview(active tab)
Safety
Resources

What Is It?
Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are clear, practically colorless, liquids. In cosmetics and personal care products, these ingredients are used in the formulation of hair and bath products, eye and facial makeup, fragrances, personal cleanliness products, and shaving and skin care products.

Why is it used in cosmetics and personal care products?
Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are used as solvents and viscosity decreasing agents in cosmtics and personal care products.

Scientific Facts: 
Butylene Glycol, or 1,3-Butanediol, dissolves most essential oils and synthetic flavoring substances. Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are glycols or glycol ethers. Glycols are a class of alcohols that contain two hydroxyl groups which are also called a diols.

Safety Information: 
The Food and Drug Administration (FDA) permits Butylene Glycol to be used as a synthetic flavoring and adjuvant for direct addition to food. Butylene Glycol, Hexylene Glycol and Dipropylene Glycol are allowed to be used as indirect food additives. For example, Butylene Glcyol may be used in polymeric coatings in contact with food, and Hexylene Glycol and Dipropylene Glycol may be used in adhesives in contact with food.

The safety of Butylene Glycol and related ingredients has been assessed by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR Expert Panel evaluated the scientific data and concluded that Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are safe for use in cosmetics and personal care products.

In 2004, the CIR Expert Panel considered available new data on Butylene Glycol and the related ingredients and reaffirmed the above conclusion.

More safety Information: 
CIR Safety Review: The CIR Expert Panel noted that Butylene Glycol can be metabolized and used as a source of calories. The results of acute, subchronic, and chronic oral toxicity studies indicated a low order of toxicity for these glycols. Results of parenteral injection, inhalation, and acute and subchronic cutaneous toxicity studies likewise supported a low order of toxicity.

Butylene Glycol caused minimal to mild skin irritation but no evidence of sensitization. The glycols produced mild to severe ocular irritation with Hexylene Glycol producing the most severe irritation. A number of product formulations containing these glycols at concentrations up to 21.4% have been tested in various human skin irritation and sensitization assays. The degree of irritation produced depended upon the particular product. There was no correlation between the degree of irritation and the concentration of the glycol present in the product. There were no reactions indicative of skin sensitization to these glycols in any skin sensitization assays and no suggestions of phototoxicity or photosensitization.

Dipropylene Glycol (DPG)
Product Stewardship Summary (CAS number 25265-71-8)
Chemical Formula for Dipropylene Glycol (DPG) C6H14O3
What is Dipropylene Glycol (DPG)?
Dipropylene Glycol is a derivative of propylene oxide (PO) and is produced in a two-step process. The first step is the reaction of PO with water into a mixture of Monopropylene glycol (MPG) and Dipropylene Glycol and the second step is the distillation and purification of the mixture into its two separate components, with MPG being the main component. Dipropylene Glycol consists of three isomers 1,1'-oxidi-2-propanol, 2-(2'-hydroxypropoxy)-1-propanol and 2,2'- oxidi-1-propanol and is a colourless, viscous and odourless liquid. It is highly hygroscopic and miscible in all ratios with water and most organic solvents.
How is Dipropylene Glycol (DPG) Used?
Industrial uses of Dipropylene Glycol include as a raw material to produce polymers such as polyester and alkyd resins or as plasticizer in other polymers, for example PVC. Dipropylene Glycol can also be a component in cleaning agents and printing inks or act as a carrier in many other formulations; for example, personal care products such as fragrances, soaps and cosmetics. Health, Safety and Environmental Considerations Dipropylene Glycol has low acute toxicity by oral, dermal or inhalation routes. It is non-irritating to the skin and eye and there is no evidence of allergic skin reactions. Dipropylene Glycol is not considered to be carcinogenic or genotoxic, nor does it have effects on fertility or reproduction. Dipropylene Glycol is readily biodegradable, is not expected to bio-accumulate and is of very low toxicity to aquatic organisms. Dipropylene Glycol is not classified as flammable, but will burn at temperatures over 200 - 244°F/90 - 20°C. Storing and Transporting Dipropylene Glycol (DPG) Dipropylene glycol is transported by tank truck, rail car and vessel as bulk products and by tank truck and vessel as packed product. Dipropylene Glycol is hygroscopic and requires storage equipped with drying devices to protect the product from humidity. Storage temperature should not exceed 104°F/40°C. In cold climates, tank heating devices and insulation must be installed. 

Risk Characterization Summary
Risks associated with exposure to these products have been evaluated for the following “chain-ofcommerce” activities: manufacture, storage, product transfer, transportation, and customers/markets. They are manufactured, stored and transported to customers in closed systems. Depending on the customer, end uses may vary from use as an intermediate for the manufacture of other chemicals, commercial products, or certain formulated consumer products. Proper equipment design and handling procedures maintain low risk from exposure where used as an intermediate. Exposures may be higher in commercial and consumer applications. To minimize risk, additional controls such as, special handling procedures and protective packaging are implemented. 

What Is Dipropylene Glycol?
Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are clear, practically colorless, liquids. In cosmetics and personal care products, these ingredients are used in the formulation of hair and bath products, eye and facial makeup, fragrances, personal cleanliness products, and shaving and skin care products.

Why is Dipropylene Glycol used in cosmetics and personal care products?
Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are used as solvents and viscosity decreasing agents in cosmtics and personal care products.

Scientific Facts: 
Butylene Glycol, or 1,3-Butanediol, dissolves most essential oils and synthetic flavoring substances. Butylene Glycol, Hexylene Glycol, Ethoxydiglycol and Dipropylene Glycol are glycols or glycol ethers. Glycols are a class of alcohols that contain two hydroxyl groups which are also called a diols.
Dipropylene glycol (DPG) is not volatile, but is miscible with water. Air monitoring data are not
available, but concentrations of dipropylene glycol in the atmosphere are expected to be extremely low
because of its low vapor pressure and high water solubility. Low levels of Dipropylene Glycol (0.4 ng/l) in drinking
water were reported in one study. It is biodegraded in water and expected to be biodegraded in soil, as
indicated by >70% degradation after 28d in a Zahn-Wellens test. It is not expected to bioaccumulate,
with measured BCFs between 0.3 and 4.6 in fish. Measured aquatic toxicity data on fish and
amphibians report toxicity at >5,000 and 3,181 mg/L, respectively. Based on QSAR data for Daphnia
and algal toxicity, and the measured data for fish and amphibians, Dipropylene Glycol is not expected to be toxic to
aquatic organisms except at very high concentrations. Using an assessment factor of 100 and the fish
96-hour LC 50, the PNEC is >50 mg/l; if the amphibian data are used, the PNEC is 32 mg/l.

Exposure
Dipropylene glycol is produced as a byproduct of the manufacture of propylene glycol. The US
production capacity of Dipropylene Glycol was 131 million pounds (59.5 kilotonnes) in 1998; the demand was 108
million pounds (49 kilotonnes). Dipropylene Glycol is used (percent of demand) as follows: plasticizers, 38 percent;
unsaturated polyester resins, 23 percent; cosmetics and fragrances, 10 percent; polyurethane polyols, 8
percent; alkyd resins, 7 percent; miscellaneous, including solvents and functional fluids (specialty deicers, inks, lubricants), 14 percent.

What is Dipropylene Glycol (DPG)?
Dipropylene Glycol is a derivative of propylene oxide (PO) and is produced in a two-step process. The first step
is the reaction of PO with water into a mixture of Monopropylene glycol (MPG) and Dipropylene Glycol and the
second step is the distillation and purification of the mixture into its two separate components, with
MPG being the main component.
Dipropylene Glycol consists of three isomers 1,1'-oxidi-2-propanol, 2-(2'-hydroxypropoxy)-1-propanol and 2,2'-
oxidi-1-propanol and is a colourless, viscous and odourless liquid. It is highly hygroscopic and
miscible in all ratios with water and most organic solvents.
How is Dipropylene Glycol (DPG) Used?
Industrial uses of Dipropylene Glycol include as a raw material to produce polymers such as polyester and alkyd
resins or as plasticizer in other polymers, for example PVC. Dipropylene Glycol can also be a component in
cleaning agents and printing inks or act as a carrier in many other formulations; for example,
personal care products such as fragrances, soaps and cosmetics.
Health, Safety and Environmental Considerations
Dipropylene Glycol has low acute toxicity by oral, dermal or inhalation routes. It is non-irritating to the skin and eye
and there is no evidence of allergic skin reactions. Dipropylene Glycol is not considered to be carcinogenic or
genotoxic, nor does it have effects on fertility or reproduction.
Dipropylene Glycol is readily biodegradable, is not expected to bio-accumulate and is of very low toxicity to
aquatic organisms.
Dipropylene Glycol is not classified as flammable, but will burn at temperatures over 200 - 244°F/90 - 20°C.
Storing and Transporting Dipropylene Glycol (DPG)
Dipropylene glycol is transported by tank truck, rail car and vessel as bulk products and by tank truck
and vessel as packed product.
Dipropylene Glycol is hygroscopic and requires storage equipped with drying devices to protect the product from
humidity. Storage temperature should not exceed 104°F/40°C. In cold climates, tank heating
devices and insulation must be installed.