POLYPROPYLENE GLYCOL 400

Propylene glycol 400 = PPG 400

CAS: 25322-69-4
Molecular Formula: C6H14O3

Propylene glycol is an aliphatic alcohol. 
Propylene glycol 400 is an addition polymer of propylene glycol and water represented as H[OCH3]nOH in which n represents the average number of oxypropylene groups.

Polyglycol P-400 is a linear polymer produced by controlled, catalyzed reaction between propylene oxide and water. 
The letter P and the number 400 indicate that the polymer is propylene oxide-based and that the approximate average molecular weight is 400.
PPG P-400, as this product is also known, is a clear, viscous liquid at room temperature. 

Propylene glycol 400 has a low pour point and, unlike the higher molecular weight PPGs, is completely soluble in water at 25 °C. 
Propylene glycol 400 loses Propylene glycol 400 water solubility at higher temperatures.
Like all polypropylene glycols, Polyglycol P-400 is soluble in all proportions with any organic solids and liquids, the main exception being long chain aliphatic hydrocarbons.

Polyglycol P-400 possesses excellent lubricity and has a low vapor pressure. 
Under extreme heating conditions Propylene glycol 400 does not form coke nor does Propylene glycol 400 form a varnish. 
Decomposition products are low boiling products that are either lost as volatiles or soluble in the polypropylene glycol.

Polypropylene glycol or polypropylene oxide is the polymer of propylene glycol. 
Chemically Propylene glycol 400 is a polyether, and, more generally speaking, Propylene glycol 400 a polyalkylene glycol (PAG) H S Code 3907.2000. 
The term polypropylene glycol or PPG is reserved for polymer of low- to medium-range molar mass when the nature of the end-group, which is usually a hydroxyl group, still matters. 
The term "oxide" is used for high-molar-mass polymer when end-groups no longer affect polymer properties. 
Between 60 and 70% of propylene oxide is converted to polyether polyols by the process called alkoxylation.

Polypropylene glycol 400 is a synthetic liquid substance that absorbs water. 
Polypropylene glycol 400 is also used to make polyester compounds and as a base for deicing solutions. 
Polypropylene glycol 400 is used by the chemical, food and pharmaceutical industries as an antifreeze where leakage could cause food contact. 

The Food and Drug Administration (FDA) has classified Polypropylene glycol 400 as an additive considered "generally safe" for use in food. 
Propylene glycol 400 is used in some medicines, cosmetics or food products to absorb excess water and retain moisture. 
Solvent for food dyes and flavors and in the paint and plastics industries. 
Polypropylene glycol 400 is also used to create artificial smoke or fog, which is used in firefighting training and theatrical productions. 

Other names for polypropylene glycol 400 are 1,2-dihydroxypropane, 1,2-propanediol, methyl glycol and trimethyl glycol.
Polypropylene glycol 400 is a clear, colorless, slightly syrupy liquid at room temperature. 
Although polypropylene glycol 400 needs to be heated or shaken quickly to form a vapor, Propylene glycol 400 can be found in air in vapor form. 
Polypropylene glycol 400 is practically odorless and tasteless.

Polypropylene glycol 400, also known as 1,2-propanediol, is a synthetic (i.e. man-made) alcohol that attracts/absorbs water. 
Propylene glycol 400 is a viscous, colorless liquid, almost odorless, but with a slightly sweet taste. 
Polypropylene glycol 400 is one of the most widely used ingredients in cosmetics and personal care products, including facial cleansers, moisturizers, bath soaps, shampoos and conditioners, deodorants, shaving preparations, and fragrances. 

In addition to Propylene glycol 400 use as an ingredient in cosmetics and personal care products, Propylene glycol 400 is used in many foodstuffs such as beer, packaged bakery products, frozen dairy products, margarine, coffee, nuts, soda. 
Propylene glycol 400 is also used as an inactive ingredient (eg solvent) in many medicines. 
The FDA has approved Propylene glycol 400 use in concentrations as high as 98% in drugs applied to the skin and 92% in drugs taken by mouth.

Propylene glycol 400 is used in cosmetic and pharmaceutical preparations and in the manufacture of emulsifying or wetting agents and lubricants,suppress foaming in industrial processes and for making polyurethane resins, hydraulic fluids, and various other materials. 
Propylene glycol 400 acts as swelling agent for the preparation and characterization of organo-modified SBA-15. 
Polypropylene glycol and tetraethoxysilane precursors play an important role for the preparation of superhydrophobic silica-based surfaces.

Polypropylene glycols are mostly water-insoluble liquids used in industrial processes to suppress foaming and make polyurethane resins, hydraulic fluids and various other materials.
Polypropylene glycol 400 or polypropylene oxide is a polymer of propylene glycol. 
Chemically Propylene glycol 400 is a polyether, and more generally speaking, Propylene glycol 400 is a polyalkylene glycol (PAG). 

The term Polypropylene glycol 400 or Polypropylene glycol 400 is reserved for a low to medium range molar mass polymer when the nature of the end group, usually a hydroxyl group, is still important. 
The term "oxide" is used for a high molar mass polymer when the end groups no longer affect the polymer properties. 
60% of the annual production of propylene oxide, which was 6.6×106 tons in 2003, was converted to polymer.

Polymerization of Propylene glycol 400:
Polypropylene glycol is produced by ring-opening polymerization of propylene oxide. 
The initiator is an alcohol and the catalyst a base, usually potassium hydroxide. 
When the initiator is ethylene glycol or water the polymer is linear. 
With a multifunctional initiator like glycerine, pentaerythritol or sorbitol the polymer branches out.

Conventional polymerization of propylene oxide results in an atactic polymer. 
The isotactic polymer can be produced from optically active propylene oxide, but at a high cost. 
A salen cobalt catalyst was reported in 2005 to provide isotactic polymerization of the prochiral propylene oxide.

Allergic reaction of Propylene glycol 400:
Estimates of the prevalence of Polypropylene glycol 400 allergy range from 0.8% (10% Polypropylene glycol 400 in aqueous solution) to 3.5% (30% Polypropylene glycol 400 in aqueous solution). 
Researchers believe that the incidence of allergic contact dermatitis to Polypropylene glycol 400 may be greater than 2% in patients with eczema or fungal infection; this is very common in countries with less sun exposure and lower-than-normal vitamin D balances. 

Therefore, Polypropylene glycol 400 allergy is more common in these countries.
Polypropylene glycol 400 was named 2018 Allergen of the Year by the American Contact Dermatitis Association for Propylene glycol 400 potential for allergic reactions and Propylene glycol 400 frequent use in a variety of topical and systemic products. 
87% of the reactions were classified as weak and 9% as strong. 

Positive reaction rates were 0%, 0.26%, and 1.86% for 5%, 10%, and 20% Polypropylene glycol 400, respectively, and increased with each concentration increase. 
Irritant reaction rates were 0.95%, 0.24%, and 0.5% for 5%, 10%, and 20% Polypropylene glycol 400, respectively. 
Polypropylene glycol 400 skin sensitization occurred in patients sensitized to a number of other concomitant positive allergens, most of which were: Myroxylon pereirae resin, benzalkonium chloride, carba mixture, potassium dichromate, neomycin sulfate; An overall median of 5 and a mean of 5.6 concomitant positive allergens were reported for positive Polypropylene glycol 400 reactions.

Properties of Propylene glycol 400:
PPG has many properties in common with polyethylene glycol. 
The polymer is a liquid at room temperature. 

Solubility in water decreases rapidly with increasing molar mass. 
Secondary hydroxyl groups in PPG are less reactive than primary hydroxyl groups in polyethylene glycol. 
PPG is less toxic than PEG, so biotechnologicals are now produced in PPG.

Application of Propylene glycol 400:
Propylene glycol (PPG) may be used as a viscosity decreasing agent, a solvent and a fragrance ingredient in cosmetics. 
PPG may be used as a good swelling agent for the synthesis of large pore mesoporous materials.

As PPG P-400 is water-soluble Propylene glycol 400 is used in areas not usually associated with the higher molecular weight PPGs. 
For example Propylene glycol 400 is used as a dust adhesive fluid, as solvent/coupler for inks and pesticide formulations. 
Besides the other outlets given above PPG P-400 is also used to make resins, fatty acid esters, lubricants, metal working fluids and as plasticiser.

Manufacturing of Propylene glycol 400:

Manufacturing Industry of Propylene glycol 400:
Industrially, Polypropylene glycol 400 is mainly produced from propylene oxide (for food grade use). 
According to the 2018 source, 2.16 million tons are produced annually. 
Manufacturers either manufacture non-catalytic high-temperature treatment from 200°C (392°F) to 220°C (428°F) or ion-exchange resin from 150°C (302°F) to 180°C (356°F) or a small amount of in the presence of sulfuric acid or alkali.
The final products include 20% Polypropylene glycol 400, 1.5% diPolypropylene glycol 400 and small amounts of other polyPolypropylene glycol 400s. 

Further purification produces finished industrial grade or USP/JP/EP/BP grade Polypropylene glycol 400 which is typically 99.5% or more. 
Use of USP (US Pharmacopoeia) Polypropylene glycol 400 can reduce the risk of Abbreviated New Drug Administration (ANDA) rejection.
Polypropylene glycol 400 can also be obtained from glycerol, a by-product from biodiesel production. 
This starting material is often reserved for industrial use because of the noticeable odor and taste that accompanies the final product.

Manufacturing Lab of Propylene glycol 400:
S-Propanediol is synthesized by fermentation methods. 
Lactic acid and lactaldehyde are common intermediates. 

Dihydroxyacetone phosphate, one of the two products of the breakdown (glycolysis) of fructose 1,6-biphosphate, is the precursor to methylglyoxal. 
This conversion is the basis of a potential biotechnological pathway to the commercial 1,2-propanediol chemical. 
Three-carbon deoxysugars are also precursors of 1,2-diol.

Uses of Propylene glycol 400:
Used in food applications (E-number 1520)
Used in pharmaceutical industry
Used in cosmetics industry
Used as aircraft de-icing fluid
Used as solvent in industrial applications

PPG series are soluble in methylbenzene, ethanol and TCE organic solvents. 
PPG200, 400 and 600 are soluble in water with performance of lubricating, solubilizing, defoaming and antistatic. 
PPG-200 can be used as dispersing agent of dyestuff.
In cosmetics, PPG 400 can be used as emollient, softener and lubricant.

PPG 400 is used as defoaming agent in paint and hydraulic oil, synthetic rubber and latex; as freezing agent, coolant and viscosity improver in heat transfer fluid.
PPG 400 is used as intermediates for esterification, etherification and polycondensation.
PPG 400 is used as release agent, solubilizer, additive for synthetic oils and water soluble cutting fluid, roller oil, hydraulic oil and high temperature lubricant, internal and external lubricants for rubber.

PPG-2000~8000 has properties of lubricating, foam resisting and heat & cold resisting.
PPG-3000~8000 is mainly used component of polyether and can produce polyurethane foaming plastic.
PPG-3000~8000 can be used directly or etherified to make plasticizer and lubricant.
This series can be used as base material for daily chemicals, pharmacy and oiling agents.

PPG 400 is used in many polyurethane formulations.
PPG 400 is used to make an epoxy reactive diluent and flexibilizer, Poly(propylene glycol) diglycidyl ether.
PPG 400 is used as a surfactant, wetting agent, dispersant in leather finishing.

PPG 400 is also employed as a tuning reference and calibrant in mass spectrometry.
PPG 400 is used as a primary ingredient in the making of paintballs.
PPG 400 is used as a defoamer

Polypropylene Glycol 400 is dissolved in organic solvents such as toluene, ethanol and chlorylene etc.
Polypropylene Glycol 400 is used as lubricant, anlistatig, plasticier, antifoaming agent, parting agent and solubilizer in resin, rubber, essence and elastic latex industry
Polypropylene Glycol 400 is used as intermediate in esterification

Used for solvents, plasticizers, softening agents, antifoaming agents, mold release agents; Also used to make resins, surface active agents, adhesives, coatings, polyurethane foams, polyurethane high-performance elastomers, polyurethane sealants for clay pipe

Forty-five percent of the produced Polypropylene glycol 400 is used as chemical raw material for the production of unsaturated polyester resins. 
In this context, Polypropylene glycol 400 reacts with a mixture of unsaturated maleic anhydride and isophthalic acid to give a copolymer. 

This partially unsaturated polymer undergoes further crosslinking to obtain thermoset plastics. 
Regarding this application, Polypropylene glycol 400 reacts with propylene oxide to give the oligomers and polymers used in polyurethane production. 
Polypropylene glycol 400 is used in water-based acrylic architectural paints to prolong the drying time by preventing the surface from drying due to Propylene glycol 400 slower evaporation rate than water.

Various applications of Propylene glycol 400:
A bottle of flavored e-liquid for vaping features Polypropylene glycol 400 as one of the main ingredients along with vegetable glycerin.

Polypropylene glycol 400 (often abbreviated as 'PPG') has many applications. 
Some common applications see Polypropylene glycol 400 used:
As a solvent for many substances, both natural and synthetic.
As a humidifier (E1520).

As freezing point depressant for slurry ice.
In veterinary medicine, as the oral treatment of hyperketonemia in ruminants.
In the cosmetic industry, where polypropylene glycol 400 is very widely used as a carrier or base for various types of makeup.

For trapping and protecting insects (including as a DNA protector).
For creating theatrical smoke and fog in special effects for film and live entertainment. 
So-called 'smoke machines' or 'preparers' vaporize a mixture of Polypropylene glycol 400 and water to create the illusion of smoke. 
Most of these machines use Polypropylene glycol 400 based fuel, while some use oil. 

Those who use polypropylene glycol 400 do so in a process similar to the way electronic cigarettes work; using a heating element to produce a dense steam. 
The steam produced by these machines has the aesthetic appearance and appeal of smoke, but does not expose the performers and props to the harms and odors associated with real smoke.
As additive in PCR to lower the melting temperature of nucleic acids for targeting GC-rich sequences.

Oral administration of Propylene glycol 400:
The acute oral toxicity of polypropylene glycol 400 is very low and large amounts are required to cause detectable health effects in humans; in fact, Polypropylene glycol 400 is three times less toxic than ethanol. 
Polypropylene glycol 400 is metabolized in the human body as pyruvic acid (a normal part of glucose metabolism, easily converted into energy), acetic acid (processed by ethanol metabolism), lactic acid (a normal acid that is usually abundant during digestion), and propionaldehyde (potentially dangerous substance).
Toxicity usually occurs at plasma concentrations above 4 g/L, requiring extremely high intake in a relatively short period of time, or when used as a vehicle for intravenous or orally administered drugs or vitamins in large bolus doses. 

Propylene glycol 400 would be nearly impossible to reach toxic levels by consuming food or supplements containing no more than 1g/kg of Polypropylene glycol 400, excluding alcoholic beverages allowed at 5 percent in the US = 50g/kg. 
Cases of polypropylene glycol 400 poisoning are usually related to either inappropriate intravenous administration or accidental ingestion of large quantities by children.
The potential for long-term oral toxicity is also low. 
In an NTP continuous breeding study, no effects on fertility were observed in male or female mice receiving Polypropylene glycol 400 in drinking water at doses up to 10,100 mg/kg bw/day. 

No effect on fertility was seen in the first or second generation of treated mice.
In a 2-year study, 12 mice were fed chow containing up to 5% Polypropylene glycol 400 and showed no significant adverse effects.
Due to Propylene glycol 400 low chronic oral toxicity, Polypropylene glycol 400 is classified by the U.S. Food and Drug Administration as "generally recognized as safe" (GRAS) for use as a direct food additive, including frozen foods such as ice cream and frozen desserts.
The GRAS definition is specific to Propylene glycol 400 use in food and does not apply to other uses.

Safe Use and Handling of Propylene glycol 400:
Polypropylene glycols are relatively easy to store and handle. 
They can be stored in bulk in steel tanks, which should be padded with nitrogen or any other inert gas to prevent air from entering the tank. 
If slight iron pickup and color changes cannot be tolerated then the storage tanks should be constructed from stainless steel.

To ease the handling of polypropylene glycols somewhat, higher storage temperatures should be considered to keep the viscosity of the polyglycols within limits suitable for the pumping equipment available. 
The maximum storage temperature should not exceed 40°C to avoid the risk of product degradation. 
Pipelines may also require insulation and/or tracing to maintain suitable product temperatures.

Although PPGs have very low pour points, especially PPG 2000 and PPG 4000 become very viscous at low temperatures. 
Consequently Propylene glycol 400 is recommend that they be stored in tanks which are well insulated and heated. 
Externally located heating devices are preferable to internally sited ones. 

With external heating the risk of accelerating product deterioration is greatly reduced.
Similarly drums should be stored under cover, or preferably inside a warehouse, to maintain the temperature of the polyglycol at a level which allows for easy discharge.
The shelf life of properly stored bulk and unopened drums is, at least, 24 months.

First Aid of Propylene glycol 400:
Immediately transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
Immediately flood affected skin with water while removing and isolating all contaminated clothing
Gently wash all affected skin areas thoroughly with soap and water
Take deep breaths of fresh air
Get immediate medical attention

Safety in humans of Propylene glycol 400:
When used in moderate amounts, Polypropylene glycol 400 has no measurable effects on development and/or reproduction in animals and is unlikely to adversely affect human development or reproduction. 
The safety of electronic cigarettes using polypropylene glycol 400-based nicotine or THC and other cannabinoid preparations is a very controversial issue.

Skin, eye and inhalation contact of Propylene glycol 400:
Polypropylene glycol 400 is essentially non-irritating to the skin. 
Undiluted Polypropylene glycol 400 is minimally irritating to the eye and produces mild transient conjunctivitis; The eye heals after exposure is removed. 
A 2018 human volunteer study showed that 10 male and female subjects exposed to concentrations up to 442 mg/m3 for 4 hours were exposed to concentrations up to 871 mg/m3 for 30 minutes in combination with moderate exercise or signs of ocular irritation, only mild symptoms of respiratory irritation have been reported. 

Inhalation of polypropylene glycol 400 vapors does not appear to pose a significant hazard in ordinary practice. 
Due to the lack of chronic inhalation data, Propylene glycol 400 is recommended that Polypropylene glycol 400 not be used in inhalation applications such as theater productions or in antifreeze solutions for emergency eyewash stations. 
Recently, Polypropylene glycol 400 (usually alongside glycerol) has been included as a carrier for nicotine and other additives in e-cigarette liquids, whose use offers a new form of exposure. 
The potential hazards of chronic inhalation of polypropylene glycol 400 or the final substance as a whole are not yet known.

According to a 2010 study, concentrations of Polypropylene glycol 400Es (counted as the sum of Polypropylene glycol 400 and glycol ethers) in indoor air, particularly bedroom air, have been associated with an increased risk of developing numerous respiratory and immune disorders in children. 
Asthma, hay fever, eczema, and allergies, the increased risk ranges from 50% to 180%. 
This concentration has been attributed to the use of water-based paints and water-based system cleaners. 
However, the study authors write that glycol ethers, not Polypropylene glycol 400, are the possible culprits.
Polypropylene glycol 400 did not cause sensitization or carcinogenicity in laboratory animal studies and did not demonstrate genotoxic potential.

Properties of Propylene glycol 400:
Quality Level: 200
form: liquid
mol wt: Mn 446
refractive index: n20/D 1.447
viscosity: ~100 mPa.s(20 °C)
solubility: water: miscible (completely)
density: 1.01 g/mL at 20 °C
InChI: 1S/C6H14O3/c1-5(8)4-9-6(2)3-7/h5-8H,3-4H2,1-2H3
InChI key: DUFKCOQISQKSAV-UHFFFAOYSA-N

Identifiers of Propylene glycol 400:
CAS Number: 
25322-69-4 
106-62-7
ECHA InfoCard: 100.105.547 
UNII: 01SEY4236K 
CompTox Dashboard (EPA): DTXSID9027863

CAS: 25322-69-4
Molecular Formula: C6H14O3
Molecular Weight (g/mol): 134.175
MDL Number: MFCD01779680
InChI Key: DUFKCOQISQKSAV-UHFFFAOYSA-N
PubChem CID: 32881
SMILES: CC(CO)OCC(C)O

Physicochemical Information of Propylene glycol 400:
Boiling point: >200 °C (1013 hPa)
Density: 1.13 g/cm3 (20 °C)
Flash point: 138.6 °C
Ignition temperature: 360 °C DIN 51794
Melting Point: 5 °C
pH value: 5 - 7 (100 g/l, H₂O, 20 °C)
Vapor pressure: <0.1 hPa (20 °C)
Viscosity kinematic: 97 - 110 mm2/s (20 °C)

IUPAC Name of Propylene glycol 400:
2-(2-hydroxypropoxy)propan-1-ol

Synonym of Propylene glycol 400:
polypropylene glycol
polyoxypropylene
2-2-hydroxypropoxy propan-1-ol
emkapyl
lineartope
niax ppg
polyoxypropylene glycol
methyloxirane homopolymer 
desmophen 360c
2-2-hydroxypropoxy-1-propanol
Actocol 51-530
Alkapal PPG-1200
Alkapal PPG-2000
Alkapal PPG-4000
Bloat guard
Desmophen 360C
Emkapyl
Glycols, polypropylene
Jeffox PPG 400
Laprol 2002
Lineartop E
Methyloxirane homopolymer
Napter E 8075
Niax 1025
Niax 11-27
Niax 61-582
Niax polyol ppg 4025 
Niax ppg 
Niax ppg 1025 
Niax ppg 3025
Niax ppg 425
Oopg 1000
Oxirane, methyl-, homopolymer
P 400
P 4000 (polymer)
P.P.G 2025
P.P.G 3025
P.P.G 4025
P.P.G. 1000
P.P.G. 1025
P.P.G. 1200
P.P.G. 150
P.P.G. 1800
P.P.G. 400
P.P.G. 425
P.P.G. 750
PPG
Pluracol 1010
Pluracol 2010
Pluracol P 2010
Pluracol P 410
Poly(oxy(methyl-1,2-ethanediyl)), alpha-hydro-omega-hydroxy-
Poly(propylene oxide)
Polyglycol P 400
Polyglycol P-2000
Polyglycol P-4000
Polyglycol type P1200
Polyglycol type P2000
Polyglycol type P250
Polyglycol type P3000
Polyglycol type P400
Polyglycol type P750
Polymer 2
Polyoxypropylene
Polyoxypropylene glycol
Polypropylene glycol
Polypropylene glycol #1200
Polypropylene glycol #400
Polypropylene glycol #425
Polypropylene glycol #750
Polypropylene glycol 1025
Polypropylenglykol
PPG-15
Propylan 8123
Propylene oxide homopolymer
Propylene oxide, propylene glycol polymer
SKF 18667
Voranol P 1010
Voranol P 2000
Voranol P 4000
alpha-Hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))
alpha-Hydro-omega-hydroxypoly(oxypropylene)
PPG
Poly(propylene oxide)
polypropyleneglycol
Poly(propylene glycol)
Propane-1,2-diol
Poly(oxypropylene)
Polypropylene glycol
2-(2-hydroxypropoxy)propan-1-ol
Polyoxypropylene
2-(2-HYDROXYPROPOXY)-1-PROPANOL
Emkapyl
Lineartop E
Niax ppg
Polyoxypropylene glycol
106-62-7
Methyloxirane homopolymer
Desmophen 360C
Polyglycol P 400
Poly(propylene oxide)
Niax ppg 425
Jeffox PPG 400
Polyglycol P-2000
Polyglycol P-4000
Laprol 2002
Niax ppg 1025
Niax ppg 3025
Polyoxypropylene (12)
Polyglycol type P250
Polyglycol type P400
Polyglycol type P750
Voranol P 1010
Napter E 8075
1-Propanol, 2-(2-hydroxypropoxy)-
Polymer 2
Niax polyol ppg 4025
Polyglycol type P1200 
Polyglycol type P2000
Polyglycol type P3000
Propylene oxide homopolymer
Pluracol 1010
Pluracol 2010
Pluracol P 410
Propylan 8123
Laprol 702
2-(2-Hydroxypropoxy)propanol
Caswell No. 680
Glycols, polypropylene
Pluracol P 2010
Voranol P 2000
Voranol P 4000
Polypropylene Glycol 400
Polypropylene Glycol 1000
Polypropylene Glycol 2000
Alkapal PPG-1200
Alkapal PPG-2000
Alkapal PPG-4000
Actocol 51-530
P 4000 (polymer)
Polypropylenglykol
alpha-Hydro-omega-hydroxypoly(oxypropylene)
Niax 1025
Oopg 1000
Polypropylene glycol #400
Polypropylene glycol #425
Polypropylene glycol #750
Polypropylene glycol 1025
Niax 11-27
PPG-9 
Polypropylene glycol #1200
Niax 61-582
Oxirane, methyl-, homopolymer
PPG-12
PPG-15
PPG-17
PPG-20
PPG-26
PPG-30
PPG-34
Propylene oxide, propylene glycol polymer
Polyoxypropylene (9)
HSDB 1266
Polyoxypropylene (12)
Polyoxypropylene (15)
Polyoxypropylene (17)
Polyoxypropylene (20)
Polyoxypropylene (26)
Polyoxypropylene (30)
Polyoxypropylene (34)
Polypropylene glycol (9)
Polypropylene glycol 150
SKF 18667
EPA Pesticide Chemical Code 068602
P.P.G 2025
P.P.G 3025
P.P.G 4025
P.P.G. 150
P.P.G. 400
P.P.G. 425
P.P.G. 750
Polypropylene glycol (12)
Polypropylene glycol (15)
Polypropylene glycol (17)
Polypropylene glycol (20)
Polypropylene glycol (26)
Polypropylene glycol (30)
Polypropylene glycol (34)
Polypropylene glycol 2000
Polypropylene glycol 2025
Polypropylene glycol 3025
Polypropylene glycol 4000
Polypropylene glycol 4025
P.P.G. 1000
P.P.G. 1025
P.P.G. 1200
P.P.G. 1800
WNY0H4G53Q
Polypropylene glycol #1000
Polypropylene glycol #1800
alpha-Hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))
P 400
Polypropylene glycol (m w 1,200-3,000)
Poly(oxy(methyl-1,2-ethanediyl)), alpha-hydro-omega-hydroxy-
Polypropylenglykol
Poly(propylene glycol), average M.W. 425
Propane-1,2-diol, propoxylated
Poly(propylene glycol)
Poly(propylene glycol), average M.W. 2.000
Poly(propylene glycol), average M.W. 4.000
polypropylene oxide
EINECS 203-416-2
PPG?
2-Methyl-3-oxahexane-1,5-diol
poly(propylene glycol) macromolecule
Dipropylene Glycol,mixture of isomers
Propylene glycol
α-Propylene glycol
1,2-Propanediol
1,2-Dihydroxypropane
Methyl ethyl glycol
Methylethylene glycol
2-(2-Hydroxypropoxy)-1-propanol 
2-(2-Hydroxypropoxy) propanol
alpha-Hydro-omega-hydroxypoly (oxy(methyl-1,2-ethanediyl))
alpha-Hydro-omega-hydroxypoly (oxypropylene)
Desmophen 360C
Emkapyl
Jeffox PPG 400
Laprol 2002
Laprol 702
Lineartop e
Actocol 51-530
Alkapal PPG-4000
alpha-Hydro-omega-hydroxypoly(oxy(methyl-1,2-ethanediyl))
alpha-Hydro-omega-hydroxypoly(oxypropylene)
Bloat guard
Caswell No. 680
Desmophen 360C
EC 500-039-8
Emkapyl
EPA Pesticide Chemical Code 068602
Glycols, polypropylene
HSDB 1266
Jeffox PPG 400
Laprol 2002
Lineartop E
Methyloxirane homopolymer
Napter E 8075
Niax 1025
Niax 11-27
Niax 61-582
Niax polyol ppg 4025
Niax ppg
Oopg 1000
Oxirane, methyl-, homopolymer
P 400
P 4000 (polymer)
P.P.G. 400
Pluracol 1010
Pluracol P 410
Poly(oxy(methyl-1,2-ethanediyl)), alpha-hydro-omega-hydroxy-
Poly(propylene oxide)
Polyglycol P 400
Polyglycol P-2000
Polyglycol type P2000
Polyglycol type P400
Polymer 2
Polyoxypropylene
Polyoxypropylene glycol
Polypropylene glycol
Polypropylene glycol #400
Polypropylenglykol
Polypropylenglykol
PPG
PPG-15
Propylan 8123
Propylene oxide homopolymer
Propylene oxide, propylene glycol polymer
SKF 18667
Voranol P 1010
Voranol P 2000
Voranol P 4000