Polyropylene Glycol (PPG)

General Information

Product Name: Polyropylene Glycol (PPG)
CAS: 25322-69-4
Catalog: SUR-NON-031
Type: PPG-200, 400, 600, 1000, 1500, 2000, 3000, 4000, 6000, 8000
Applications: Pharmaceuticals, cosmetics, coatings, others

Introduction

As a member of the polyether polyols family, polypropylene glycol (PPG) is synthesized by the polymerization of propylene oxide. The resulting polymer varies in molecular weight, enabling it to serve diverse roles in industrial, cosmetic, and pharmaceutical applications.

Characteristics

PPG exhibits a range of distinctive characteristics that make it highly valued in industrial and commercial applications:

Solubility: PPG demonstrates excellent solubility in organic solvents such as toluene, ethanol, and trichloroethylene. Additionally, certain grades like PPG-200, PPG-400, and PPG-600 are soluble in water, which enhances their versatility in different formulations.
Lubrication: PPG serves as an efficient lubricant due to its ability to reduce friction and enhance the smoothness of surfaces.
Defoaming Agent: It helps to eliminate foam bubbles, thereby improving process efficiency and product quality in applications such as coatings and hydraulic fluids.
Antistatic and Humectant Properties: PPG exhibits antistatic properties, making it useful in products where static electricity buildup needs to be minimized.
Chemical Stability: PPG is chemically stable under a wide range of conditions, including varying temperatures and pH levels.
Customizability: PPG can be tailored into different molecular weights and functionalities to meet specific application requirements.

Basic Parameters

Type	Appearance 25 °C	Color	Hydroxyl Value (mgKOH/g)	Mw	Acid Value (mgKOH/g)	Moisture (%)	pH
PPG-200	Colorless viscous liquid	≤ 20	510-623	180-220	≤ 0.5	≤ 0.5	5.0-7.0
PPG-400	Colorless viscous liquid	≤ 20	255-312	360-440	≤ 0.5	≤ 0.5	5.0-7.0
PPG-600	Colorless viscous liquid	≤ 20	170-208	540-660	≤ 0.5	≤ 0.5	5.0-7.0
PPG-1000	Colorless viscous liquid	≤ 20	102-125	900-1100	≤ 0.5	≤ 0.5	5.0-7.0
PPG-1500	Colorless viscous liquid	≤ 20	68-83	1350-1650	≤ 0.5	≤ 0.5	5.0-7.0
PPG-2000	Colorless viscous liquid	≤ 20	51-62	1800-2200	≤ 0.5	≤ 0.5	5.0-7.0
PPG-3000	Colorless viscous liquid	≤ 20	34-42	2700-3300	≤ 0.5	≤ 0.5	5.0-7.0
PPG-4000	Colorless viscous liquid	≤ 20	26-30	3700-4300	≤ 0.5	≤ 0.5	5.0-7.0
PPG-6000	Colorless viscous liquid	≤ 20	17-20.7	5400-6600	≤ 0.5	≤ 0.5	5.0-7.0
PPG-8000	Colorless viscous liquid	≤ 20	12.7-15	7200-8800	≤ 0.5	≤ 0.5	5.0-7.0

* Typical values (not warranted values)

Applications

PPG can be widely used in the following industries:

Cosmetic Applications: The inclusion of PPG, for example PPG-400, in cosmetic formulations enhances the product's ability to hydrate and soften the skin, making it a preferred ingredient for high-quality skincare products.
Industrial Applications: PPG functions as a defoaming agent in coatings and hydraulic oils, preventing foam formation and ensuring optimal performance of these products.
In the manufacture of synthetic rubber and latex, PPG acts as a processing aid, facilitating smoother production processes and improving the final product quality.
Additionally, PPG serves as an antifreeze and coolant in heat transfer fluids, maintaining appropriate temperatures and preventing overheating in various systems.
Chemical Intermediates: PPG is also a crucial intermediate in chemical reactions such as esterification, etherification, and polycondensation.
Plasticizer and Lubricant Production: Grades PPG-3000 to PPG-8000 can be used directly or after esterification to produce plasticizers and lubricants.
Base Material Applications: PPG is employed as a base material in cosmetics, pharmaceuticals, and oils. Its non-toxic and non-flammable nature makes it suitable for these sensitive applications, ensuring safety and efficacy in end products.
Other Industrial Uses: PPG's versatility is showcased in its use as a mold release agent, solubilizer, and additive in synthetic oils. It is an essential component in water-soluble cutting fluids, roller oils, and hydraulic oils, enhancing their performance and longevity. PPG grades ranging from 2000 to 8000 exhibit excellent lubrication, defoaming, and resistance to heat and frost, making them ideal for high-temperature lubricants and internal and external lubricants in rubber manufacturing.

Packaging and Storage

Packaging Options: Typically packaged in 200 kg iron drums or 50 kg plastic drums.
Storage Conditions: Stored in a cool, dry place, away from direct sunlight and moisture.
Shelf Life: 2 years

Polypropylene glycol (PPG) exemplifies the intersection of chemical innovation and practical application. Its diverse molecular weights and properties enable it to meet the stringent requirements of multiple industries, from cosmetics and pharmaceuticals to industrial manufacturing and beyond. Contact Alfa Chemistry today to learn more about our products and how they can benefit your applications.

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