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Paraldehyde Structure

Paraldehyde

Chemical Properties

Melting point 12 °C
Boiling point 65-82 °C
Density  0.994 g/mL at 20 °C (lit.)
vapor density  1.52 (vs air)
vapor pressure  25.89 psi ( 55 °C)
FEMA  4010 | PARALDEHYDE
refractive index  n20/D 1.39
Flash point 30 °F
storage temp.  2-8°C
solubility  120g/l
pka 16(at 25℃)
form  solution
Specific Gravity 0.994
color  Colorless liquid
Odor disagreeable taste, aromatic odor
explosive limit 1.3-17.0%(V)
Water Solubility  125 g/L (25 ºC)
Merck  13,7098
BRN  80142
Dielectric constant 14.5(20℃)
Stability Stable. Flammable. Incompatible with strong oxidizing agents, mineral acids.
InChIKey SQYNKIJPMDEDEG-UHFFFAOYSA-N
LogP 0.670
Substances Added to Food (formerly EAFUS) PARALDEHYDE
CAS DataBase Reference 123-63-7(CAS DataBase Reference)
EWG's Food Scores 2
NCI Dictionary of Cancer Terms aldehyde
FDA UNII S6M3YBG8QA
ATC code N05CC05
NIST Chemistry Reference Paraldehyde(123-63-7)
EPA Substance Registry System Paraldehyde (123-63-7)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H226
Precautionary statements P210-P233-P240-P241-P242-P243
Hazard Codes  F
Risk Statements  11-R11-10
Safety Statements  9-16-29-33-S9-S33-S29-S16
RIDADR  UN 1993 3/PG 2
WGK Germany  1
RTECS  YK0525000
Autoignition Temperature 235 °C
HazardClass  3.2
PackingGroup  III
HS Code  29125000
Hazardous Substances Data 123-63-7(Hazardous Substances Data)
Toxicity LD50 orally in rats: 1.65 g/kg (Figot)
NFPA 704:
3
2 1

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