Formalin 37.7%

Formalin: A Versatile Preservative and Disinfectant

Formalin is a clear, aqueous solution containing 37–40% formaldehyde by weight, often stabilized with methanol (6–15%) to prevent polymerization. Known for its strong antibacterial and antifungal properties, formalin is widely used in industrial, medical, and laboratory applications as a preservative, disinfectant, and chemical reagent.

Key Features:

• Effective Preservative: Prevents microbial growth in biological specimens and solutions.
• Disinfectant Properties: Kills bacteria, fungi, and viruses, making it suitable for sanitation.
• Versatility: Used in a wide range of industries, including textiles, pharmaceuticals, and construction.
• Stability: Methanol-stabilized formalin ensures long shelf life and reliable performance.
• Water Soluble: Easy to dilute and incorporate into various formulations.

Applications:

Medical and Laboratory Use:

• Preservation: Preserves biological specimens for research and education.
• Histology: Fixative for tissue samples to prevent degradation.
• Sterilization: Disinfects surgical instruments and laboratory equipment.

Industrial Applications:

• Resins and Plastics: Used in the production of urea-formaldehyde and phenol-formaldehyde resins.
• Textile Industry: As a finish to improve wrinkle resistance and durability.
• Construction: Hardens concrete and is a key ingredient in insulation materials.

Agriculture:

• Disinfects equipment, tools, and animal housing to control pathogens.

Household Use:

• Found in some cleaning agents and deodorants (in controlled concentrations).

Benefits:

• Highly Effective: Offers excellent antimicrobial activity against a broad range of pathogens.
• Preservation: Extends the life of biological materials and industrial products.
• Cost-Efficient: A powerful solution requiring small quantities for effective results.
• Multipurpose: Suitable for diverse applications across various industries.

Physical and Chemical Properties:

• Appearance: Colorless, clear liquid.
• Odor: Pungent, characteristic formaldehyde smell.
• Solubility: Fully miscible in water.
• Boiling Point: Approximately 96°C (205°F).
• pH: Slightly acidic (3–4).

Safety and Handling:

• Toxicity: Formalin contains formaldehyde, which is toxic and can cause irritation to the skin, eyes, and respiratory system.
• Storage: Keep in a tightly sealed container, away from heat and direct sunlight.
• Handling Precautions:
  • Use in a well-ventilated area or under fume extraction.
  • Wear appropriate personal protective equipment (PPE) such as gloves, goggles, and masks.
  • Avoid inhalation, ingestion, or prolonged skin contact.
• Disposal: Dispose of according to local environmental regulations.

Formalin is a powerful solution offering unmatched preservation and disinfection capabilities. While highly effective, it requires careful handling due to its toxicity. When used responsibly, it plays a vital role in numerous industrial, medical, and laboratory processes.