What to Know If You Are Going To Buy Propylene Glycol?

Posted by Stanley Thomas
2
Jun 28, 2017
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Propylene glycol is a creamy, colorless liquid which is very commonly used in a number of industrial applications, in processed food items, cosmetics, and even in electronic cigarettes. It is also known as “propane-1,2-diol, ” and its chemical formula is C3H802. 

As the chemical is used in many different applications, it is available in a number of different grades. Let us have a look at some of the most common grades of propylene glycol and some important considerations when buying them. 

  • Propylene glycol USP

Propylene glycol USP is 99.8% pure propylene glycol USP Kosher which is commonly used as a food additive, medical additive, and in manufacturing beverages. These applications require the chemical to have Kosher or USP certification. 

This grade is produced as per the highest manufacturing standards of the industry and is also tested for compliance with the USP (United States Pharmacopeia) specifications. Reliable chemical suppliers like Silver Fern Chemicals can be an ideal choice for buying this chemical. 

  • Propylene Glycol, Inhibited

This is 99.5% pure inhibited propylene glycol. This is a heat transfer fluid which contains an additive and an inhibitor for controlling corrosion, prevent fouling of the heat transfer surfaces and scaling, and maintain the pH in the desired range. 
Moreover, it is available in different concentrations too. While distilled or deionized water is usually recommended for dilution, well water, city water, or tap water can also be used if it meets the required quality standards. It is commonly used in water process applications which involve copper, iron, low-grade stainless steel, etc. and need protection from corrosion. 

  • Propylene Glycol, Inhibited, Food Grade

This is 95% USP grade propylene glycol which is corrosion inhibited. As propylene glycol has low acute oral toxicity, the heat transfer fluids which are propylene-glycol based are often required in the food and beverage industry. 

The chemical is manufactured with the help of GRAS (Generally Recognized as Safe) ingredients. It is available in different concentrations ranging from 25% to full strength concentrations. Some of the most common applications of this chemical include solar heating, cooling systems in the food and beverage manufacturing units, refrigeration, boilers, cooling systems in computers, and for storing thermal energy. 

These are some of the most common grades of propylene glycol used for a number of different applications. The chemical is generally available in bulk, 275-gallon totes, and 55-gallon drums. When buying, make sure that you check the safety sheet of the chemical and prefer buying it from a reputable chemical manufacturer or supplier to ensure that you get the best product. Buy the right grade from the right supplier and you are sure to get the best result from the use of this important chemical. 
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