SDS and properties of acetaldehyde
Synonyms: Ethanal; Acetic aldehyde; ethyl aldehyde 
Formula: C 2 H 4 O / CH 3 CHO
Molecular mass: 44.1
physical properties
Boiling point: 20.2°C
Melting point: -123°C
Relative density (water = 1): 0.78
Solubility in water: miscible
Vapor pressure, kPa at 20°C: 101
Relative vapor density (air = 1): 1.5
Flash point: -38 ºC dc
Autoignition temperature: 185°C
Explosive limits, % by volume in air: 4-60
Octanol/water partition coefficient as log Pow: 0.63 
chemical hazards
The substance can form explosive peroxides in contact with air. The substance can polymerize under the influence of acids and alkali hydroxides and under the presence of metallic traces (iron), with danger of fire or explosion. The substance is a strong reducing agent and reacts violently with oxidants, strong acids, halogens and amines causing fire and explosion hazard.
Health risks
Extremely flammable. Irritant to the eyes and respiratory tract. Possible carcinogenic effects.
First aid
Inhalation: Move person to fresh air. In case of suffocation proceed to artificial respiration. Skin contact: Wash abundantly with water. Remove contaminated clothing.
Eyes: Wash with plenty of water (for at least 15 minutes), keeping the eyelids open. Ask for medical attention.
Ingestion: Drink plenty of water. Cause vomiting. Immediately seek medical attention.
