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  • Propylene Glycol
Application Use
Dust suppression Dust formation and the associated housekeeping issues, plus the danger of dust explosions, make dust suppression important in mining and cement grinding applications. Propylene Glycol Industrial Grade (PGI) provides good wetting ability, hygroscopic nature, low vapor pressure and low toxicity, and is ideal for use as a dust suppression agent.
Dyes and Inks Propylene glycols are excellent solvents and compatibilizers for the many dyes, resins and inks used in modern high-speed printing presses. System requirements determine the choice of propylene glycol product:

Lubricants Dipropylene Glycol Regular Grade (DPG) has an affinity for oils that makes it an ideal component of textile lubricant formulations. It is also approved by the FDA for indirect usage as a surface lubricant in metal part manufacture (21CFR178.3910).

The water solubility and solvency properties of Tripropylene Glycol Regular Grade (TPG), along with its low volatility and high boiling point make it especially useful in lubricants.
Natural Gas Dehydration When natural gas is recovered, its water content may need to be lowered to prevent water from condensing in pipelines and freezing, or from forming hydrocarbon hydrates. Hydrates can foul instruments and reduce line capacity.

The hygroscopic nature of Propylene Glycol Industrial Grade (PGI) makes it an effective dehydrating fluid for use in the natural gas processing industry.
Plasticizers A plasticizer is a molecule that is added to a polymer to modify its properties, making it easier to process and/or meet application requirements such as improved toughness or flexibility. Plasticizers function by internal solvation of the polymer chains.

Dipropylene Glycol Regular Grade (DPG) is reacted with phthalic acid or anhydride to form the dipropylene glycol phthalate; one of the most important plasticizers for polyvinyl chloride (PVC) resins.
Surfactants "Surfactant" is a contraction of the words surface-active and agent. Surfactants function by changing the surface tension at the interface of mixtures, allowing non-miscible materials to either be dispersed into water or separated from water.

Propylene glycols are used as initiators for synthesis of nonionic surfactants made from polymerization of ethylene oxides with other oxides such as propylene or butylene oxides.

Propylene glycol is also used as the starting material for the synthesis of propylene glycol esters with sorbitol and/or fatty acids.
Waxes Tripropylene Glycol Regular Grade (TPG) and Dipropylene Glycol Regular Grade (DPG) are used to provide freeze-thaw protection in various wax products to help prevent damage caused by freezing.

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