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Food Grade Propylene Glycol USP is approved for direct use in food, beverage, and medical applications. Food Grade Propylene Glycol USP can be used in replace of Technical Grade PG specifications. All products conform to USP requirements and have been packaged in a clean room environment in decontaminated containers. Glycerin USP - 1 Gallon.

Thursday, October 13, 2011. Polyglycol P-4000 is a linear polymer produced by controlled, catalysed reaction between propylene oxide and water. The letter P and the number 4000 indicate that the polymer is propylene oxide based and that the approximate average molecular weight is 4000. Friday, September 23, 2011. E-juice is used to produce the vapor in e-cigarettes that mimic the feel of a real cigarette. With the popularity of e-cigarettes nowadays, e-juices are in demand as we.

Homemade Propylene Glycol Polymer Crystals. Polymer crystals are necessary for humidor attachments to maintain the correct humidity for cigars. Correct humidity is needed to absorb excess moisture and reduce mold. To achieve the optimum 70 percent humidity, an equal ratio of propylene glycol and distilled water is needed. Propylene glycol can also be added subsequently, if ever humidity increases again.