74-98-6
Product Name:
Propane
Formula:
C3H8
Synonyms:
LPG;AD2;Anti-AD2;Anti-Apolipoprotein E;Anti-Apoprotein
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Propane appears as a colorless gas with a faint petroleum-like odor. It is shipped as a liquefied gas under its vapor pressure. For transportation it may be stenched. Contact with the unconfined liquid can cause frostbite by evaporative cooling. Easily ignited. The vapors are heavier than air and a flame can flash back to the source of leak very easily. The leak may be either a liquid or vapor leak. The vapors can asphyxiate by the displacement of air. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. |
|---|---|
| Color/Form | Colorless gas [Shipped as a liquefied compressed gas]. |
| Odor | Odorless [Note: A foul smelling odorant is often added when used for fuel purposes]. |
| Boiling Point | -43.8 °F at 760 mmHg (USCG, 1999) |
| Melting Point | -305.9 °F (USCG, 1999) |
| Flash Point | -156 °F (gas) (USCG, 1999) |
| Solubility | 0.01 % (NIOSH, 2023) |
| Density | 0.59 at -58 °F (USCG, 1999) - Less dense than water; will float |
| Vapor Density | 1.5 (USCG, 1999) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 9823 mmHg (USCG, 1999) |
| LogP | log Kow = 2.36 |
| Autoignition Temperature | 842 °F (USCG, 1999) |
| Decomposition | At 650 °C decomposes to ethylene and ethane |
| Viscosity | 8.3 uPa.s at 300K; 10.9 uPa.s at 400K; 13.4 uPa.s at 500K; 15.8 uPa.s at 600K |
| Corrosivity | Non-corrosive |
| Heat of Combustion | (constant vol) 528.4 cal; (constant pressure) 553.5 cal |
| Heat of Vaporization | 14.79 kJ/mol at 25 °C |
| Surface Tension | 16 dynes/cm= 0.016 N/m @ -47 °C |
| Ionization Potential | 11.07 eV |
| Odor Threshold | Odor Threshold Low: 12225.0 [ppm] Odor Threshold High: 20005.0 [ppm] Odor threshold from AIHA |
| Refractive Index | Index of refraction: 1.2898 @ 20 °C |
| Kovats Retention Index | 300 |
| Other Experimental Properties | Burns with a luminous, smoky flame; heavier than air; 1 liter weighs 2.0200 g at 0 °C, 760 mm Hg /and/ 1.8324 g at 25 °C, 760 mm Hg; liquefies at -42 °C; solid at -187.7 °C |
| Chemical Classes | Toxic Gases & Vapors -> Simple Asphyxiants |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 44.10 g/mol |
|---|---|
| XLogP3 | 1.8 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 44.062600255 g/mol |
| Monoisotopic Mass | 44.062600255 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 3 |
| Formal Charge | 0 |
| Complexity | 0 |
| 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
Propane appears as a colorless gas with a faint petroleum-like odor. It is shipped as a liquefied gas under its vapor pressure. For transportation it may be stenched. Contact with the unconfined liquid can cause frostbite by evaporative cooling. Easily ignited. The vapors are heavier than air and a flame can flash back to the source of leak very easily. The leak may be either a liquid or vapor leak. The vapors can asphyxiate by the displacement of air. Under prolonged exposure to fire or heat the containers may rupture violently and rocket.