: Carry industrial-grade PG for solar heating or boiler systems. Choosing the Right Grade

: Specializes in premixed solutions (20%–50%) for chillers and antifreeze. 3. Local Options (Emergency Needs)

If you are buying for a business or large-scale industrial use (5-gallon pails to 275-gallon totes), work with a dedicated distributor. : Offers USP and Technical grades in bulk.

Propylene glycol (PG) is a versatile chemical used in everything from skincare and food to industrial HVAC systems. Because its use depends entirely on its purity, knowing where to buy it—and which grade to look for—is essential. Where to Buy Propylene Glycol

: Often stocked as a treatment for ketosis in livestock.

Propylene Glycol vs Ethylene Glycol Guide - Alliance Chemical

: Best for 4 oz to 1-gallon containers. Look for brands like Soapeauty or FLAVORSandCOLOR.com.

: Sites like Bulk Apothecary or The Chemistry Store are excellent for high-purity USP grade liquid. 2. Specialized Chemical Suppliers (Best for Bulk)