Formalin is an aqueous solution of formaldehyde, typically containing 37-40% formaldehyde gas dissolved in water, often with a small amount of methanol to prevent polymerization.
Appearance: Clear, colorless liquid with a strong, pungent odor.
Chemical Formula: CH₂O (formaldehyde in water).
Uses:
Tissue Preservation: Widely used as a preservative and fixative in biological laboratories for preserving tissue samples.
Disinfection: Employed as a disinfectant due to its strong antimicrobial properties.
Specimen Storage: Used for storing biological specimens to prevent decomposition.
Histology: Essential in histological procedures to maintain the integrity of tissue samples for microscopic examination.
Chemical Reactions: Acts as a reagent in various chemical syntheses and laboratory experiments.
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Preservative: Widely used as a preservative for biological specimens and tissues due to its effective antimicrobial properties.
Disinfectant: Serves as a powerful disinfectant in laboratory settings, helping to maintain a sterile environment.
Fixative: Commonly used as a fixative in histology and pathology to preserve tissue samples for microscopic examination.
Chemical Reagent: Utilized in various chemical reactions and syntheses, particularly in the production of resins and plastics.
Concentration: Typically available in a solution with a formaldehyde concentration of about 37-40%, providing consistent and reliable performance for laboratory applications.
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