CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Pentane-2,4-dione appears as a colorless or yellow colored liquid. Less dense than water. Vapors are heavier than air. Used as a solvent in paints and varnishes. |
|---|---|
| Color/Form | Colorless or slightly yellow liquid |
| Odor | Pleasant odor |
| Boiling Point | 284.7 °F at 760 mmHg (USCG, 1999) |
| Melting Point | -10.3 °F (USCG, 1999) |
| Flash Point | 93 °F (USCG, 1999) |
| Solubility | In water, 166,000 mg/L at 20 °C |
| Density | 0.975 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Vapor Density | 3.5 (Air = 1) |
| Vapor Pressure | 2.96 [mmHg] |
| LogP | log Kow = 0.40 |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Autoignition Temperature | 644 °F (USCG, 1999) |
| Decomposition | Hazardous decomposition products formed under fire conditions - Carbon oxides. |
| Viscosity | 0.6 mPa.s at 20 °C |
| Heat of Combustion | -11,070 Btu/lb = -6,150 cal/g = -257X10+5 J/kg |
| Heat of Vaporization | 36.55 kJ/mol at 101.3 kPa |
| Surface Tension | 31.2 dynes/cm at 20 °C |
| Polymerization | Light may cause polymerization. |
| Odor Threshold | 0.010 ppm |
| Refractive Index | Index of refraction: 1.4494 at 20 °C/D |
| Dissociation Constants | pKa = 8.93 |
| Kovats Retention Index | 795 756 760 753 775 779 760 764 764 790 775 804 |
| Other Experimental Properties | Specific gravity: 0.9753 at 20 °C/20 °C |
| Chemical Classes | Other Classes -> Aliphatic Ketones, Other |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H226:Flammable liquids H302:Acute toxicity,oral |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
COMPUTED DESCRIPTORS
| Molecular Weight | 100.12 g/mol |
|---|---|
| XLogP3 | 0.4 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 2 |
| Exact Mass | 100.052429494 g/mol |
| Monoisotopic Mass | 100.052429494 g/mol |
| Topological Polar Surface Area | 34.1 Ų |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| Complexity | 82.3 |
| 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
Pentane-2,4-dione appears as a colorless or yellow colored liquid. Less dense than water. Vapors are heavier than air. Used as a solvent in paints and varnishes.