Methylene Glycol (methanediol)

Description

Methylene glycol, also known as methanediol, is an organic compound with the chemical formula CH₂(OH)₂. It is the simplest geminal diol and exists in equilibrium with formaldehyde in aqueous solutions. This means it can release formaldehyde under certain conditions, making it a subject of safety concerns.

Properties

• Molecular Formula: CH₂(OH)₂
• Molecular Weight: 48.041 g/mol
• Density: ~1.2 g/cm³
• Boiling Point: ~194°C
• Flash Point: ~99.8°C
• Appearance: Colorless liquid
• Odor: Pungent (due to formaldehyde presence)

Uses & Applications

Methylene glycol is primarily used in:

• Hair Straightening Products: Helps alter hair structure for a straightened appearance.
• Preservatives: Extends shelf life of cosmetics and personal care products.
• Disinfectants: Used in household cleaning agents for antimicrobial action.
• Industrial Applications: Found in resins, adhesives, and coatings.

Advantages

• Effective Preservative: Prevents microbial growth in cosmetic products.
• Hair Treatment Benefits: Provides long-lasting straightening effects.
• Industrial Utility: Used in various formulations for adhesives and coatings.

Safety Concerns

• Skin Irritation: Can cause allergic reactions and dermatitis.
• Respiratory Issues: Inhalation of vapors may lead to irritation