​Butyl glycol (also known as BG, 2-butoxyethanol, glycol monobutyl ether and ethylene glycol monobutyl ether, butyl cellosolve, butoxyethanol) is a clear, colourless, oily liquid with a unique sweet yet mild odour and has the formula C6H14O2. It is a butyl ether of ethylene glycol and is miscible with water and common organic solvents. It has been produced industrially for over half a century and is used primarily as a solvent in paints and surface coatings but also in inks and cleaning products.
Uses
2-Butoxyethanol is a glycol ether with modest surfactant properties, which can also be used as a mutual solvent[clarification needed]. In use since the 1930s, glycol ethers are solvents that dissolve both water-soluble and hydrophobic substances. Glycol ethers consist of two components, an alcohol and ether. According to the nature of alcohol, molecules of this class can be divided into two groups: E series and P series which correspond to ethylene and propylene respectively. Glycol ethers are selected for
specific purposes, such as solubility, inflammability, and volatility
​​​​​​​Hazards 
Butyl glycol, if in contact with your eyes, skin, throat, can be harmful and cause serious irritation. Ingestion, and skin contact, can produce headaches, nausea, and dizziness. The wearing of PPE equipment is recommended to prevent the chances of skin content, swallowing and inhaling.
If contact is made, it should be immediately washed out of eyes, soapy water should be used to clean the skin and any clothing contacted should also be removed and replaced. Medical support must be obtained in all circumstances, especially if the chemical is swallowed.
It has a National Fire and Protection Association health rating of 3, indicating that it can cause serious and even permanent injuries in critical conditions. A fire rating of 2 indicates that a modest amount of high heat exposure is required for ignition to ensue; a flame or spark will easily cause an ignition.
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