Formula: CH₃CHO
CAS: 75-07-0
EC No.: 200-836-8
M (Molar Mass): 44.05 g/mol
D (Density): ~0.99 g/mL (for 30% solution)
bp (Boiling Point): 20.2°C (pure)
Flash Point: -39°C (pure)
Concentration: 20-30% in water
Appearance: Colorless liquid with pungent odor
Chemicals Properties
Assay (by GC): 20.0-30.0% (w/w).
Appearance: Colorless liquid with characteristic pungent odor.
Identification: Passes test for acetaldehyde.
Acidity (as acetic acid): ≤ 0.2%.
Water Content: 70-80% (balance).
Residue on Evaporation: ≤ 0.01%.
Aldehyde Content: As specified.
Permanganate Time Test: ≥ 30 minutes (indicates purity).
Formic Acid: ≤ 0.1%.
Acetic Acid: ≤ 0.2%.
Iron (Fe): ≤ 1 ppm.
Chloride (Cl): ≤ 5 ppm.
Sulfate (SO₄): ≤ 5 ppm.
Hazard Information
Hazard: Flammable liquid and vapor. Causes serious eye irritation. May cause respiratory irritation.
Safety: Keep away from heat, sparks, open flames, hot surfaces. Use explosion-proof equipment. Wear protective gloves, eye protection, face protection.
Storage: Store in a cool, well-ventilated place away from direct sunlight. Keep container tightly closed and upright. Store under inert gas if possible.
