Mono Propylene Glycol, commonly referred to as PG, is a versatile organic compound with the chemical formula C3H8O2. As a colorless, odorless, and viscous liquid, it stands out for its excellent solubility, moisture retention, and low-temperature stability. Classified as a diol, specifically 1,2-propanediol, PG is miscible with a broad range of solvents including water, ethanol, acetone, and chloroform. This makes it an indispensable ingredient across numerous sectors, from consumer goods to heavy industry.

Industrially, Mono Propylene Glycol is primarily synthesized from propylene oxide, ensuring a high purity standard, typically 99.5% or greater, qualifying for various Pharmacopoeia grades such as USP, EP, or BP. Its physical properties are well-defined: a density of approximately 1.036 g/cm³, a melting point of −59 °C, and a boiling point of 188.2 °C, further cementing its reliability in diverse applications.

One of the most significant applications of Mono Propylene Glycol is within the food and pharmaceutical industries. Recognized as "Generally Recognized As Safe" (GRAS) by the U.S. Food and Drug Administration (FDA) and approved as E1520 in the European Union, PG plays multiple roles. It acts as an anti-caking agent, emulsifier, flavor agent, humectant, texturizer, stabilizer, solvent, antioxidant, and thickener in a wide array of edible items. From baked goods and desserts to liquid sweeteners, ice cream, and coffee-based drinks, PG maintains consistency and extends shelf life. In pharmaceuticals, it serves as a crucial solvent and carrier in oral, injectable, and topical formulations, facilitating the delivery of many active drug ingredients.

Beyond food and medicine, Mono Propylene Glycol is extensively used in industrial and commercial applications. A significant portion of its production is utilized as a chemical feedstock for unsaturated polyester resins and in the creation of polyurethanes. Its humectant properties are leveraged in cosmetics as a carrier or base for makeup and in alcohol-based hand sanitizers to prevent skin drying. Furthermore, its ability to depress the freezing point of water makes it a preferred component in antifreeze solutions, including environmentally friendly automotive coolants and aircraft de-icing fluids. It is also a main ingredient in electronic cigarette liquids, where it helps produce aerosol vapor and carries nicotine and flavorants. Niche uses include its role in veterinary medicine for treating hyperketonaemia in ruminants, as a solvent for theatrical smoke and fog machines, and as a couplant in ultrasonic testing.

Regarding safety, Mono Propylene Glycol exhibits remarkably low toxicity. The acute oral toxicity is minimal, requiring extremely large quantities to cause perceptible health effects in humans. It is metabolized in the human body into natural compounds like pyruvic acid, acetic acid, and lactic acid. While cases of toxicity are extremely rare and typically associated with inappropriate intravenous administration of very high doses or unusual accidental ingestion, the amounts found in food products are generally considered safe. Skin and eye contact usually results in minimal, transient irritation. It has not been shown to cause sensitization, carcinogenicity, or genotoxicity in laboratory studies. However, a small percentage of individuals may experience allergic contact dermatitis to propylene glycol, manifesting as a rash. Environmentally, PG is readily biodegradable in water and soil and is not considered persistent, although large quantities can exert high biochemical oxygen demand during degradation.

NINGBO INNO PHARMCHEM CO.,LTD. is a dedicated manufacturer and supplier of high-quality Mono Propylene Glycol. We understand the critical importance of purity and consistency for diverse industrial and commercial applications. For those looking to buy or purchase Mono Propylene Glycol, NINGBO INNO PHARMCHEM CO.,LTD. offers a reliable and consistent supply, ensuring that your production needs are met with superior products. We pride ourselves on providing competitive price options and efficient delivery to our global clientele. Partner with us for your Mono Propylene Glycol requirements and experience our commitment to excellence.