Uses

Propylene glycol is used:

<ul >

<li >As an ingredient in the oil dispersant <a href="http://en.wikipedia.org/wiki/Corexit" title="Corexit" >Corexit</a>, used in great quantities during the <a href="http://en.wikipedia.org/wiki/Deepwater_Horizon_oil_spill" title="Deepwater Horizon oil spill" >Deepwater Horizon oil spill</a><a href="http://en.wikipedia.org/wiki/Propylene_glycol#cite_note-NALCO.2C_Corexit_9527A_Safety_Data_Sheet-4" >[5]</a><a href="http://en.wikipedia.org/wiki/Propylene_glycol#cite_note-ProPublica-5" >[6]</a></li>

<li >To <a href="http://en.wikipedia.org/wiki/De-icing" title="De-icing" class="mw-redirect" >deice</a> aircraft wings and <a href="http://en.wikipedia.org/wiki/Empennage" title="Empennage" >empennage</a><a href="http://en.wikipedia.org/wiki/Propylene_glycol#cite_note-6" >[7]</a></li>

<li >As a solvent in many <a href="http://en.wikipedia.org/wiki/Pharmaceuticals" title="Pharmaceuticals" class="mw-redirect" >pharmaceuticals</a>, including <a href="http://en.wikipedia.org/wiki/Oral_administration" title="Oral administration" >oral</a>, <a href="http://en.wikipedia.org/wiki/Injectable" title="Injectable" class="mw-redirect" >injectable</a> and <a href="http://en.wikipedia.org/wiki/Topical" title="Topical" >topical</a> formulations (notably, <a href="http://en.wikipedia.org/wiki/Diazepam" title="Diazepam" >diazepam</a>, which is <a href="http://en.wikipedia.org/wiki/Insoluble" title="Insoluble" class="mw-redirect" >insoluble</a> in water, uses propylene glycol as its solvent in its <a href="http://en.wikipedia.org/wiki/Clinic" title="Clinic" >clinical</a>, injectable form<a href="http://en.wikipedia.org/wiki/Propylene_glycol#cite_note-svt-7" >[8]</a>)</li>

<li >As a <a href="http://en.wikipedia.org/wiki/Humectant" title="Humectant" class="mw-redirect" >humectant</a> <a href="http://en.wikipedia.org/wiki/Food_additive" title="Food additive" >food additive</a>, labeled as <a href="http://en.wikipedia.org/wiki/E_number" title="E number" >E number</a> E1520</li>

<li >As an <a href="http://en.wikipedia.org/wiki/Emulsification" title="Emulsification" class="mw-redirect" >emulsification</a> agent in <a href="http://en.wikipedia.org/wiki/Angostura_bitters" title="Angostura bitters" >Angostura</a> and orange <a href="http://en.wikipedia.org/wiki/Bitters" title="Bitters" >bitters</a></li>

<li >As a <a href="http://en.wikipedia.org/wiki/Moisturizer" title="Moisturizer" >moisturizer</a> in <a href="http://en.wikipedia.org/wiki/Medication" title="Medication" class="mw-redirect" >medicines</a>, <a href="http://en.wikipedia.org/wiki/Cosmetics" title="Cosmetics" >cosmetics</a>, <a href="http://en.wikipedia.org/wiki/Food" title="Food" >food</a>, <a href="http://en.wikipedia.org/wiki/Toothpaste" title="Toothpaste" >toothpaste</a>, <a href="http://en.wikipedia.org/wiki/Shampoo" title="Shampoo" >shampoo</a>, <a href="http://en.wikipedia.org/wiki/Mouth_wash" title="Mouth wash" class="mw-redirect" >mouth wash</a>, <a href="http://en.wikipedia.org/wiki/Hair_care" title="Hair care" >hair care</a> and <a href="http://en.wikipedia.org/wiki/Tobacco" title="Tobacco" >tobacco</a> products</li>

<li >As a carrier in <a href="http://en.wikipedia.org/wiki/Fragrance_oil" title="Fragrance oil" >fragrance oil</a></li>

<li >To produce polyester compounds</li>

<li >As a base in deicing solution</li>

<li >As an ingredient in massage oils</li>

<li >In hand sanitizers, <a href="http://en.wikipedia.org/wiki/Antiseptic" title="Antiseptic" >antibacterial</a> lotions, and <a href="http://en.wikipedia.org/wiki/Saline_solution" title="Saline solution" class="mw-redirect" >saline solutions</a></li>

<li >In <a href="http://en.wikipedia.org/wiki/Smoke_machine" title="Smoke machine" class="mw-redirect" >smoke machines</a> to make artificial <a href="http://en.wikipedia.org/wiki/Smoke" title="Smoke" >smoke</a> for use in <a href="http://en.wikipedia.org/wiki/Firefighter" title="Firefighter" >firefighters</a>' training and <a href="http://en.wikipedia.org/wiki/Theater" title="Theater" class="mw-redirect" >theatrical</a> productions</li>

<li >In <a href="http://en.wikipedia.org/wiki/Electronic_cigarette" title="Electronic cigarette" >electronic cigarettes</a>, as a vaporizable base for diluting the nicotine liquid</li>

<li >As a <a href="http://en.wikipedia.org/wiki/Solvent" title="Solvent" >solvent</a> for <a href="http://en.wikipedia.org/wiki/Food_coloring" title="Food coloring" >food colors</a> and <a href="http://en.wikipedia.org/wiki/Flavoring" title="Flavoring" class="mw-redirect" >flavorings</a></li>

<li >As an ingredient, along with wax and gelatin, in the production of paintballs</li>

<li >As a moisture stabilizer (humectant) for <a href="http://en.wikipedia.org/wiki/Snus" title="Snus" >snus</a> (Swedish style snuff)</li>

<li >As a cooling agent for <a href="http://en.wikipedia.org/wiki/Beer" title="Beer" >beer</a> and <a href="http://en.wikipedia.org/wiki/Wine" title="Wine" >wine</a> glycol jacketed fermentation tanks</li>

<li >As a <a href="http://en.wikipedia.org/wiki/Toxicity" title="Toxicity" >nontoxic</a> <a href="http://en.wikipedia.org/wiki/Antifreeze" title="Antifreeze" >antifreeze</a> for winterizing drinking water systems (for example recreational vehicles), and in applications where the used antifreeze eventually will be drained into the soil, water, or a septic system<a href="http://en.wikipedia.org/wiki/Propylene_glycol#cite_note-SeafitAntifreeze-8" >[9]</a></li>

<li >As a less-<a href="http://en.wikipedia.org/wiki/Poison" title="Poison" >toxic</a> <a href="http://en.wikipedia.org/wiki/Antifreeze" title="Antifreeze" >antifreeze</a> in <a href="http://en.wikipedia.org/wiki/Solar_water_heating" title="Solar water heating" >solar water heating</a> systems</li>

<li >As a <a href="http://en.wikipedia.org/wiki/Solvent" title="Solvent" >solvent</a> used in mixing photographic chemicals, such as film developers</li>

<li >In <a href="http://en.wikipedia.org/wiki/Cryonics" title="Cryonics" >cryonics</a></li>

<li >As a working fluid in hydraulic presses</li>

<li >As a <a href="http://en.wikipedia.org/wiki/Coolant" title="Coolant" >coolant</a> in liquid cooling systems</li>

<li >To regulate humidity in a cigar <a href="http://en.wikipedia.org/wiki/Humidor" title="Humidor" >humidor</a></li>

<li >As the killing and preserving agent in pitfall traps, usually used to capture <a href="http://en.wikipedia.org/wiki/Ground_beetles" title="Ground beetles" class="mw-redirect" >ground beetles</a></li>

<li >As an additive to pipe tobacco to prevent dehydration</li>

<li >To treat livestock <a href="http://en.wikipedia.org/wiki/Ketosis" title="Ketosis" >ketosis</a></li>

<li >As the main ingredient in <a href="http://en.wikipedia.org/wiki/Deodorant" title="Deodorant" >deodorant</a> sticks</li>

<li >As an ingredient in <a href="http://en.wikipedia.org/wiki/UV_tattoo" title="UV tattoo" >UV or blacklight tattoo ink</a></li>

<li >As a lubricant in air conditioning compressors</li>

<li >As a wetting agent, used to determine drying time in paints and coatings</li>

<li >Used in the beverage mixer Sweet N Sour</li>

</ul>