Acetic Acid 3%

Acetic Acid 3% is a clear, colorless, aqueous solution of acetic acid (CH₃COOH) at a 3% concentration, notable for its vinegar-like odor and mild acidity, and is used widely in laboratories for various applications.​

Typical Properties

Concentration: 3% (w/v or v/v) acetic acid in water​

Appearance: Clear, colorless liquid​

Odor: Sharp, sour, vinegar-like​

pH: Approximately 2.5​

Solubility: Completely miscible with water​

Laboratory and Medical Applications

Commonly used for histology and cytology, notably as a pH adjuster or rinse in tissue staining protocols (e.g., Alcian blue staining).​

Functions as a mild cleaning agent for glassware, removing mineral deposits and residues from lab equipment.​

Sometimes used as a topical antiseptic or as a reagent in biochemical procedures.​

Safety and Handling

Causes mild irritation to skin, eyes, and respiratory tract; PPE such as gloves and eye protection are recommended.​

Handle in well-ventilated spaces and avoid breathing fumes or vapor.​

Store in a tightly closed container away from incompatible substances and direct sunlight.​

Acetic Acid 3% is a standardized reagent for controlled acidity requirements, favored for its safety, versatility, and broad utility in medical, biological, and educational labs