Propylene Glycol (PG)
known also by the systematic name propane-1,2-diol, is an organic compound (a diol alcohol), usually a tasteless, odorless, and colorless clear oily liquid that is hygroscopic and miscible with water, acetone, and chloroform. Also due to their low freezing point and freezing point depressant and high boiling point are predominantly used in heat transfer fluids. Propylene glycol is commonly considered to be environmentally friendly and non-toxic and is quite biodegradable.
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Typical Physical Properties
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Specific Gravity
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1.038
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pH
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Activity %
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100
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Solubility
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Applications
The main solvent used in environmentally friendly coolants and heat transfer fluids. Pressure testing fluids.
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Regulatory Information
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Index Number:
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57-55-6
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EINECS Number:
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UN Number:
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Not regulated
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Shipping and Handling
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Ventilate area of leak or spill. Remove all sources of ignition. Wear appropriate personal protective equipment
as specified in Section 8. Isolate hazard area. Keep unnecessary and unprotected personnel from entering. Contain and recover liquid when possible. Use nonsparking
tools and equipment. Collect liquid in an appropriate container or absorb with an inert material (e.g., vermiculite, dry sand, earth), and place in a chemical
waste container. Do not use combustile materials, such as saw dust. Do not flush to sewer.
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Packaging
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Protect container from physical damage. Store in a cool, dry, ventilated away from sources of heat, moisture, incompatible
substances.
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