Formalin

Definition

Formalin is a solution of formaldehyde in water, commonly used as a disinfectant and preservative. It is effective in killing microorganisms and preserving biological specimens.

5 Must Know Facts For Your Next Test

1. Formalin is typically composed of 37% formaldehyde by weight in water.
2. It is widely used for sterilizing surgical instruments and decontaminating surfaces.
3. Formalin works by denaturing proteins and nucleic acids, leading to cell death.
4. Prolonged exposure to formalin can be toxic, causing irritation to the skin, eyes, and respiratory system.
5. Its effectiveness can be influenced by factors such as concentration, temperature, and contact time.

Review Questions

• What is the primary chemical component of formalin?
• How does formalin achieve microbial control at the molecular level?
• What are some safety concerns associated with the use of formalin?

Related terms

Disinfectant: A chemical agent used to destroy or inhibit the growth of harmful microorganisms.

Antiseptic: A substance that prevents or arrests the growth of microorganisms on living tissues.

Sterilization: The process of making an object free from all living microorganisms.