When formulating products across the food, cosmetic, and pharmaceutical industries, selecting the right humectant is crucial for product performance and stability. Two of the most commonly used humectants are Propylene Glycol (PG) and Glycerin (also known as Glycerol). Both are viscous, colorless, and odorless liquids that attract water molecules, helping to keep products moist and prevent them from drying out. However, they possess distinct properties that make them suitable for different applications. Understanding these differences is key for procurement managers and R&D scientists looking to source the best raw materials.

Propylene Glycol, chemically known as 1,2-Propanediol with CAS 57-55-6, is a synthetic organic compound. It is known for its excellent solvency, ability to lower the freezing point of water, and its compatibility with a wide range of ingredients. In the food industry, it's often designated as E1520 and is used as a solvent for flavors, colors, and preservatives, as well as a humectant in baked goods and confectionery. Its low toxicity profile makes it a safe choice for these applications. For those looking to buy Propylene Glycol, sourcing from a reliable manufacturer in China can offer significant cost advantages without compromising on quality.

Glycerin, on the other hand, is a naturally derived compound, often a byproduct of soap manufacturing from vegetable or animal fats. It is also a powerful humectant and is widely used in skincare products for its moisturizing properties, and in food as a sweetener and thickener. Glycerin tends to be slightly more viscous than Propylene Glycol and can feel slightly stickier on the skin. While both are effective humectants, PG's lower viscosity and better solubility in certain organic compounds can make it preferable in specific industrial or cosmetic formulations.

When considering your next purchase, factors such as application specifics, regulatory requirements, and cost-effectiveness come into play. If you're seeking a versatile solvent and antifreeze with broad industrial applications, Propylene Glycol is often the preferred choice. If your focus is on natural ingredients and intense skin moisturization, Glycerin might be more suitable. As a leading supplier of industrial chemicals, NINGBO INNO PHARMCHEM CO.,LTD. offers high-quality Propylene Glycol (CAS 57-55-6) at competitive prices. We cater to bulk purchase orders and provide detailed specifications to meet your exact needs. Contact us today to learn more about our product range and to get a quote for your next order of 1,2-Propanediol.