Description_x000D_ General description_x000D_ Formaldehyde (formalin) is produced by oxidation of methanol. It is made of 37% formaldehyde and impurities such as methanol, small amounts of formic acid, aldehydes and ketones. It is used as a denaturant in formaldehyde-agarose gel electrophoresis of RNA. A gel concentration of 2.2M formaldehyde is typically used. The formaldehyde concentration as supplied is approximately 13.3M._x000D_ Application_x000D_ Formaldehyde solution has been used for fixing of cells and tissue sections. It has been used in the formaldehyde agarose gel electrophoresis._x000D_ Packaging_x000D_ 25, 500 mL in poly bottle_x000D_ Analysis Note_x000D_ Tested for use in formaldehyde-agarose gel electrophoresis of RNA.