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Acetaldehyde Structure

Acetaldehyde

Product NameAcetaldehyde

CAS75-07-0

CBNumberCB8175809

MFC2H4O

MW44.05

EINECS200-836-8

MDL NumberMFCD00006991

MOL File75-07-0.mol

MSDS FileSDS

Chemical Properties

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
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.
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
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)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H225-H319-H335-H341-H350
Precautionary statements P202-P210-P233-P240-P305+P351+P338-P308+P313
Hazard Codes  T,Xn,F+,F
Risk Statements  23/24/25-34-40-43-36/37-12-67-11-41-22-10-19
Safety Statements  36/37-33-16-26
RIDADR  UN 1198 3/PG 3
WGK Germany  2
RTECS  LP8925000
10
Autoignition Temperature 185 °C
TSCA  Yes
HazardClass  3
PackingGroup  I
HS Code  29121200
Hazardous Substances Data 75-07-0(Hazardous Substances Data)
Toxicity LD50 orally in rats: 1930 mg/kg (Smyth)
IDLA 2,000 ppm
NFPA 704:
4
2 2

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