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Formalin is a solution commonly used for preserving biological specimens and as a disinfectant. It is primarily composed of formaldehyde, a gas, dissolved in water, usually with a small amount of methanol added to prevent polymerization of the formaldehyde. The concentration of formaldehyde in formalin typically ranges from 37% to 40% by weight.
Formaldehyde is a highly reactive chemical that works by cross-linking proteins within tissues. This process denatures
Beyond preservation, formalin is also utilized for its antimicrobial properties. Its ability to kill bacteria, viruses,