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Hydroxyl Radical (OH)

Hydroxides are chemical compounds that include one hydrogen atom bonded to one oxygen atom with the chemical formula OH and a charge of -1. The positively charged compound constituent is often a metal such as sodium or aluminum.

Climate Science

Hydroxyl is significant in many chemical reactions that occur in Earth's atmosphere. The hydroxyl ion is produced by photolysis in the stratosphere and is extremely reactive. A typical atmospheric hydroxyl ion will live for less than one second before undergoing further chemical reaction. Nevertheless, hydroxyl is important in many atmospheric process that clean pollutants from the air.  

Applications

Hydroxides of the alkali metals—lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr)—are very strong bases that neutralize acids and are commonly used in industry; sodium hydroxide and potassium hydroxide, for example, are lyes frequently used in washing and soap manufacturing.

Detection

Our databases include more than 100 spectral absorption bands of OH between 0 to  9997 cm^-1. The following figure shows a linear radiative transfer through a laboratory cell containing OH at room temperature and pressure for the spectral region 300 to 500 cm^-1.

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