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A6864312

Paraldehyde , ≥95% , 123-63-7

Synonym(s):
Paraldehyde;2,4,6-Trimethyl-1,3,5-trioxane;2,4,6-Trimethyl-1,3,5-trioxacyclohexane;Paracetaldehyde;Acetaldehyde trimer

CAS NO.:123-63-7

Empirical Formula: C6H12O3

Molecular Weight: 132.16

MDL number: MFCD00036208

EINECS: 204-639-8

Update time: 2022-07-08

PRODUCT 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

Description and Uses

Paraldehyde was first synthesized in 1829 by Wildenbusch and introduced into clinical practice in the United Kingdom by the Italian physician Vincenzo Cervello in 1882. Paraldehyde, a polymer of acetaldehyde, is a clear colorless or slightly yellow transparent liquid with a strong aromatic as well as a disagreeable taste that at low temperatures, it solidifies into a crystalline mass. This agent decomposes with strong into toxic products that may be released into water, soil, or atmosphere.

Paraldehyde is used in ethanol hangover prevention. It is also used in the treatment of rectal diseases in patients with delirium tremens.

Safety

Symbol(GHS) 
GHS02
Signal word  Warning
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
Toxicity LD50 orally in rats: 1.65 g/kg (Figot)

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