123-63-7
Product Name:
Paraldehyde
Formula:
C6H12O3
Synonyms:
Paraldehyde;2,4,6-Trimethyl-1,3,5-trioxane;2,4,6-Trimethyl-1,3,5-trioxacyclohexane;Paracetaldehyde;Acetaldehyde trimer
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Paraldehyde appears as a clear colorless liquid with a pleasant odor. Flash point 96 °F. Melting point 54 °F. Less dense than water. Vapors are heavier than air. |
|---|---|
| Color/Form | COLORLESS, TRANSPARENT LIQUID |
| Odor | CHARACTERISTIC AROMATIC ODOR |
| Taste | DISAGREEABLE TASTE |
| Boiling Point | 262 °F at 760 mmHg (NTP, 1992) |
| Melting Point | 54.7 °F (NTP, 1992) |
| Flash Point | 96 °F (NTP, 1992) |
| Solubility | Sparingly soluble (NTP, 1992) |
| Density | 0.9943 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Vapor Density | 4.5 |
| Vapor Pressure | 11.0 [mmHg] |
| LogP | 0.73 |
| Stability/Shelf Life | ON EXPOSURE TO LIGHT & AIR, IT DECOMP TO ACETALDEHYDE & IS OXIDIZED TO ACETIC ACID |
| Autoignition Temperature | 460 °F (USCG, 1999) |
| Viscosity | 1.128 centipoise at 70 °F |
| Corrosivity | ... Has solvent /like/ action upon rubber, polystyrene, & styrene-acrylonitrile copolymer |
| Heat of Combustion | -5,652 cal/g (236X10+5 J/kg) at 25 °C |
| Heat of Vaporization | 75 cal/g (latent heat of vaporization) |
| Surface Tension | 27.82 dynes/cm |
| Odor Threshold | 0.02-0.025 mg/cu m (recognition) |
| Refractive Index | INDEX OF REFRACTION: 1.4049 AT 20 °C/D |
| Kovats Retention Index | 755 786 763 767 767 771 786 |
| Other Experimental Properties | GIVES ACETALDEHYDE ON HEATING WITH DIL HCL OR ON WARMING WITH SEVERAL DROPS CONCENTRATED H2SO4 |
| Chemical Classes | Other Classes -> Aldehydes |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H226:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge. |
COMPUTED DESCRIPTORS
| Molecular Weight | 132.16 g/mol |
|---|---|
| XLogP3 | 0.7 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 0 |
| Exact Mass | 132.078644241 g/mol |
| Monoisotopic Mass | 132.078644241 g/mol |
| Topological Polar Surface Area | 27.7 Ų |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Complexity | 63.3 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Paraldehyde, a hypnotic and sedative with anticonvulsant effects, occasionally is used in control of seizures and status epilepticus resistant to conventional treatment, alcohol withdrawal, and delirium tremens. Also, paraldehyde is used as a solvent, chemical intermediate, and dyestuff intermediate.