Melting point :-125 °C (lit.)
Boiling point :21 °C (lit.)
Density :0.785 g/mL at 25 °C (lit.)
vapor density :1.03 (vs air)
vapor pressure :52 mm Hg ( 37 °C)
refractive index :n20/D 1.377
FEMA :2003 | ACETALDEHYDE
Flash point :133 °F
storage temp. :2-8°C
solubility :alcohols: soluble
pka :13.57(at 25℃)
form :solution
Specific Gravity :0.823 (20/4℃) (?90% Soln.)
color :White to off-white
PH :5 (10g/l, H2O, 20℃)
Odor :Pungent, fruity odor detectable at 0.0068 to 1000 ppm (mean = 0.067 ppm)
explosive limit :4-57%(V)
Odor Threshold :0.0015ppm
Odor Type :ethereal
Water Solubility :> 500 g/L (20 ºC)
Sensitive :Air Sensitive
Merck :14,39
JECFA Number :80
BRN :505984
Henry's Law Constant :7.69 at 25 °C (Snider and Dawson, 1985:Benkelberg et al., 1995)
Exposure limits :TLV-TWA 180 mg/m³ (100 ppm) (ACGIH), 360 mg/m³ (200 ppm) (NIOSH); STEL 270 mg/m³ (150 ppm); IDLH 10,000 ppm.
Dielectric constant :21.8（5℃）
Stability :Stable, but air sensitive. Substances to be avoided include strong oxidizing agents, strong acids, reducing agents, alkalies, halogens, halogen oxides. Highly flammable. Vapour/air mixtures explosive over a very wide concentration range. May form peroxides in storage.
InChIKey :IKHGUXGNUITLKF-UHFFFAOYSA-N
LogP :-0.16
CAS DataBase Reference :75-07-0(CAS DataBase Reference)
IARC :2B (Vol. 36, Sup 7, 71) 1999, 1 (Vol. 100E) 2012
NIST Chemistry Reference :Acetaldehyde(75-07-0)
EPA Substance Registry System :Acetaldehyde (75-07-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313 IF exposed or concerned: Get medical advice/attention.