| Physical Description |
N-propanol appears as a clear colorless liquid with a sharp musty odor like rubbing alcohol. Flash point 53-77 °F. Autoignites at 700 °F. Vapors are heavier than air and mildly irritate the eyes, nose, and throat. Density approximately 6.5 lb / gal. Used in making cosmetics, skin and hair preparations, pharmaceuticals, perfumes, lacquer formulations, dye solutions, antifreezes, rubbing alcohols, soaps, window cleaners, acetone and other chemicals and products. |
| Color/Form |
Colorless liquid. |
| Odor |
Similar to ethanol |
| Taste |
CHARACTERISTIC RIPE, FRUITY FLAVOR |
| Boiling Point |
207 °F at 760 mmHg (USCG, 1999) |
| Melting Point |
-195.2 °F (USCG, 1999) |
| Flash Point |
77 °F (USCG, 1999) |
| Solubility |
Miscible (NIOSH, 2023) |
| Density |
0.803 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Vapor Density |
2.1 (Air = 1) |
| Vapor Pressure |
44.98 mmHg (USCG, 1999) |
| LogP |
0.25 |
| Henry's Law Constant |
Henry's Law constant = 7.41X10-6 atm-cu m/mol @ 25 °C |
| Autoignition Temperature |
700 °F (USCG, 1999) |
| Viscosity |
2.256 cP @ 20 °C |
| Corrosivity |
Propyl alcohol will attack some forms of plastics, rubber, and coatings. |
| Heat of Combustion |
2021.3 kJ/mol @ 25 °C |
| Heat of Vaporization |
47.45 kJ/mol @ 25 °C |
| Surface Tension |
23.75 mN/m (= dyn/cm) @ 20 °C |
| Ionization Potential |
10.15 eV |
| Odor Threshold |
Odor Threshold Low: 0.03 [mmHg] Odor Threshold High: 41.0 [mmHg] Detection odor threshold from AIHA (mean = 5.3 ppm) |
| Refractive Index |
Index of refraction: 1.3862 @ 20 °C/D |
| Dissociation Constants |
16.1 |
| Relative Evaporation Rate |
1.0 (butyl acetate = 1) |
| Kovats Retention Index |
524 551 555 556 557 537 540.2 540.2 546 552 552 552 536.9 543.7 549.7 558.2 559.3 561.2 561.4 521 540.5 541.5 542.3 544.6 551.4 553.6 556.5 540.5 541.5 542.3 544.6 551.4 553.5 556.5 561 546 565 575 555 530 530 544 562 520 547 557 561 544 530 533 536 537 544 544 557 544 535 547.7 570 553 520 539 538.64 531.4 539 543 546 546 539 571 535 534 535 548 561 555 571 572 |
| Other Experimental Properties |
Liquid heat capacity= 0.566 BTU/lb-F @ 70 °F; Ideal gas heat capacity= 0.345 BTU/lb-F @ 75 °C |
| Chemical Classes |
Solvents -> Alcohols (<C12) |