Propylene Glycol (PG Brine)

Glycol or Inhibited Glycol - in an industrial cooling and heating process terminology is referred as industrial coolant or heat transfer fluid (HTF) or the common fluid that is used in large installations for transporting heat from one place to another. Chiller Circuit Glycol Brine is used for lowering the freezing point and enhancing the heat transfer efficiency.

Glycol Brine Solutions are of majorly 3 types used in today's world for heat transfer & thermal storage, such as Mono Ethylene Glycol (MEG), Propylene Glycol (PG) and Diethylene Glycol (DEG). Inhibited Mono Ethylene Glycol(Inhibited MEG), Inhibited Propylene Glycol (Inhibited PG) and Inhibited Diethylene Glycol (Inhibited DEG) Brine solutions are also available that provides protection of metal against crevice and cavitation corrosion.

General Name: Propylene Glycol based Heat Transfer Fluid

 

Synonyms: 1,2-Propane-di-ol, 1,2-Di-hydroxy-propane, 2-Hydroxy-propanol, Poly-propylene Glycol, Poly Propylene Glycol etc.

 

Product Description:

 

 Propylene Glycol is an organic compound having molecular formula as HO-CH₂-CH(OH)-CH₃. Propylene Glycol is widely used as an antifreeze for food grade applications. It is clear, colorless and practically odorless liquid completely soluble in water. Propylene Glycol is slightly soluble in aromatic hydrocarbon solvents and only slightly miscible with aliphatic hydrocarbon solvents.

 

Application Areas:

 

 Beverages & Juices
 Breweries & Distilleries
 Dairy & Ice Cream
 Packaged Food Freezing
 Fish Processing Units
 Pharmaceutical & Bulk Drugs
 Poultry Processing Industry
 Thermal Storage System
 Heating and Cooling Systems
 Snow Melting and Refrigeration
 Ice Skating Rinks
 Vegetable Oil Industry
 Ice Manufacturer
 Cold Storage Systems

 

Product Physio-Chemical Data:

 

Properties	Description (Typical Value)
Form and Appearance	Clear, colorless liquid
Assay as Propylene Glycol	99.8%
Specific Gravity	1.04
Molecular Wt.	76.0548 gm/mol
Solubility in Water	100%

The above data have been obtained in laboratory tests and are typical of the product. They do not however constitute sales specifications and should not be regarded as such.

 

Handling Measures, Precaution & Storage:

 

 Propylene Glycol is non-toxic and can be handled easily. However, proper human safety products such as Splash goggles, lab coat, vapor respirator, gloves and boots should be worn while handling and applying chemicals.

 

 Splashes on skin should be washed off with water immediately. In case of splashing into the eyes, flush it with fresh water and obtain medical attention. It should not be injected.

 

 Propylene Glycol is slightly hygroscopic & must be stored under conditions so that contamination with water and adsorption of moisture are prevented.

 

 The storage temperature of PG is not critical, in that there will be no hazardous conditions created by storage of this product at any ambiance temperature likely to be encountered. It should be noted however for product quality reasons the storage temperature should not go above 40°C. At below freezing temperatures the product viscosity might become too high for transfer from the storage containers with the pumps available.

 

 PG is a stable chemical and is not expected to deteriorate significantly with time provided if it is stored as indicated. As a good industrial practice, it is however recommended that it should not be stored for periods longer than 6 months.

 

 Bulk tanks should be of HDPE, non-rusted stainless steel or mild steel. Hoses should be of polypropylene or SS.

 

 Drums should be stored in dry conditions away from sources of direct heat, preferable in the unopened original containers. Opened drums must be re-closed tightly immediately after drawing out material.