Chemical flash points
A liquid's flash point is the lowest temperature at which it gives off enough vapor to ignite in air near its surface. The lower the flash point, the greater the fire risk: under GHS, liquids with a flash point below 23 °C (73 °F) fall into the most severe flammable-liquid categories. Values vary with test method (closed cup vs. open cup), so check the source.
131 chemicals in our database. Values are for the pure substance from public sources; check your supplier's SDS for your product.
See also: Flash point explained · GHS flammable liquids
| Chemical | CAS | Flash point | Signal word |
|---|---|---|---|
| Propane | 74-98-6 | -156 °F (gas) (USCG, 1999) | Danger |
| Vinyl Chloride | 75-01-4 | -110 °F (NTP, 1992) | Danger |
| 1,3-Butadiene | 106-99-0 | -105 °F (NTP, 1992) | Danger |
| Butane | 106-97-8 | -76 °F (NTP, 1992) | Danger |
| Diethyl Ether | 60-29-7 | -49 °F (NTP, 1992) | Danger |
| Propylene Oxide | 75-56-9 | -35 °F (EPA, 1998) | Danger |
| Hexane | 110-54-3 | -9.4 °F (NTP, 1992) | Danger |
| Cyclohexane | 110-82-7 | -4 °F (NTP, 1992) | Danger |
| Acetylene | 74-86-2 | Closed cup: -18.15 °C (-0.7 °F). | Danger |
| Acetone | 67-64-1 | 0 °F (NTP, 1992) | Danger |
| Ethylene Oxide | 75-21-8 | -0.4 to 0 °F (EPA, 1998) | Danger |
| Tetrahydrofuran | 109-99-9 | 6 °F (NTP, 1992) | Danger |
| Benzene | 71-43-2 | 12 °F (NTP, 1992) | Danger |
| Ethyl Acetate | 141-78-6 | 24 °F (NTP, 1992) | Danger |
| Heptane | 142-82-5 | 25 °F (USCG, 1999) | Danger |
| Methyl Ethyl Ketone | 78-93-3 | 26 °F (NTP, 1992) | Danger |
| Toluene | 108-88-3 | 40 °F (NTP, 1992) | Danger |
| Acetonitrile | 75-05-8 | 42 °F (NTP, 1992) | Danger |
| 2-Pentanone | 107-87-9 | 45 °F (NTP, 1992) | Danger |
| Methyl Methacrylate | 80-62-6 | 50 °F (NTP, 1992) | Danger |
| Methanol | 67-56-1 | 52 °F (NTP, 1992) | Danger |
| tert-Butanol | 75-65-0 | 52 °F (NTP, 1992) | Danger |
| Isopropanol | 67-63-0 | 53 °F (NTP, 1992) | Danger |
| Ethanol | 64-17-5 | 55 °F (NTP, 1992) | Danger |
| Ethyl ketone | 96-22-0 | 55 °F (USCG, 1999) | Danger |
| Ethylbenzene | 100-41-4 | 59 °F (NTP, 1992) | Danger |
| O-Xylene | 95-47-6 | 63 °F (NTP, 1992) | Warning |
| Allyl Alcohol | 107-18-6 | 71.6 °F (EPA, 1998) | Danger |
| Butyl Acetate | 123-86-4 | 72 °F (NTP, 1992) | Warning |
| Methyl Isobutyl Ketone | 108-10-1 | 73 °F (NTP, 1992) | Danger |
| Mesityl oxide | 141-79-7 | 73 °F (USCG, 1999) | Warning |
| (+-)-2-Butanol | 78-92-2 | 75 °F (NIOSH, 2024) | Warning |
| 1-Propanol | 71-23-8 | 77 °F (USCG, 1999) | Danger |
| Butanedione | 431-03-8 | 80 °F (NTP, 1992) | Danger |
| P-Xylene | 106-42-3 | 81 °F (NTP, 1992) | Warning |
| Isobutanol | 78-83-1 | 82 °F (NTP, 1992) | Danger |
| 1-Butanol | 71-36-3 | 84 °F (USCG, 1999) | Danger |
| M-Xylene | 108-38-3 | 85 °F (NTP, 1992) | Warning |
| Cyclopentanone | 120-92-3 | 86 °F (NTP, 1992) | Warning |
| Styrene | 100-42-5 | 88 °F (NTP, 1992) | Danger |
| 1-Pentanol | 71-41-0 | 91 °F (NTP, 1992) | Warning |
| Propargyl alcohol | 107-19-7 | 91 °F (NTP, 1992) | Danger |
| Epichlorohydrin | 106-89-8 | 93 °F (EPA, 1998) | Danger |
| Acetylacetone | 123-54-6 | 93 °F (USCG, 1999) | Warning |
| 2-Pentanol | 6032-29-7 | 95 °F (NIOSH, 2024) | Warning |
| Cumene | 98-82-8 | 96 °F (USCG, 1999) | Danger |
| 5-Methyl-2-hexanone | 110-12-3 | 97 °F (NIOSH, 2024) | Warning |
| 2-Heptanone | 110-43-0 | 102 °F (USCG, 1999) | Warning |
| Acetic Acid | 64-19-7 | 104 °F (NTP, 1992) | Danger |
| 1,2,4-Trimethylbenzene | 95-63-6 | 111 °F (USCG, 1999) | Warning |
| Cyclohexanone | 108-94-1 | 111 °F (NTP, 1992) | Warning |
| Isoamyl Alcohol | 123-51-3 | 114 °F (USCG, 1999) | Danger |
| P-Cymene | 99-87-6 | 117 °F (USCG, 1999) | Danger |
| Mesitylene | 108-67-8 | 122 °F (NIOSH, 2024) | Warning |
| Diacetone Alcohol | 123-42-2 | 125 °F (USCG, 1999) | Warning |
| Alpha-Methylstyrene | 98-83-9 | 129 °F (NTP, 1992) | Warning |
| Acrylic Acid | 79-10-7 | 130 °F (NTP, 1992) | Danger |
| Decalin | 91-17-8 | 134 °F (USCG, 1999) | Danger |
| Formaldehyde | 50-00-0 | 140 °F for 40% solution (EPA, 1998) | Danger |
| 2-Butoxyethanol | 111-76-2 | 141 °F (NTP, 1992) | Danger |
| 1-Hexanol | 111-27-3 | 145 °F (USCG, 1999) | Warning |
| Camphor | 76-22-2 | 150 °F (NIOSH, 2024) | Danger |
| Dimethylformamide | 68-12-2 | 153 °F (NTP, 1992) | Danger |
| Cyclohexanol | 108-93-0 | 154 °F (NTP, 1992) | Warning |
| Aniline | 62-53-3 | 158 °F (EPA, 1998) | Danger |
| 1-Nonanol | 143-08-8 | 165 °F (USCG, 1999) | Warning |
| Tetrahydrofurfuryl alcohol | 97-99-4 | 167 °F (NFPA, 2010) | Danger |
| Furfuryl Alcohol | 98-00-0 | 167 °F (NTP, 1992) | Danger |
| 2-Octanol | 123-96-6 | 76 °C | Danger |
| Heptanol | 111-70-6 | 170 °F (USCG, 1999) | Warning |
| 1,3-Propanediol | 504-63-2 | Flash Point: 174 °F/ 345 °C /closed cup/ | Warning |
| Phenol | 108-95-2 | 175 °F (NTP, 1992) | Danger |
| Bisphenol A | 80-05-7 | 175 °F (NTP, 1992) | Danger |
| Tetralin | 119-64-2 | 176 °F (USCG, 1999) | Warning |
| 1-Octanol | 111-87-5 | 178 °F (USCG, 1999) | Warning |
| 2-Ethylhexanol | 104-76-7 | 178 °F (NTP, 1992) | Warning |
| Acetophenone | 98-86-2 | 180 °F (USCG, 1999) | Warning |
| 1-Decanol | 112-30-1 | 180 °F (USCG, 1999) | Warning |
| Isophorone | 78-59-1 | 184 °F (NTP, 1992) | Warning |
| 2,3-Butanediol | 513-85-9 | 85 °C (185 °F) - closed cup | Warning |
| Naphthalene | 91-20-3 | 190 °F (NTP, 1992) | Warning |
| Menthol | 1490-04-6 | 196 °F (NTP, 1992) | Warning |
| Ethanolamine | 141-43-5 | 200 °F (NTP, 1992) | Danger |
| 1,1,1-Trichloroethane | 71-55-6 | greater than 200 °F (NTP, 1992) | Warning |
| Trichloroethylene | 79-01-6 | greater than 200 °F (NTP, 1992) | Danger |
| 1-Methylnaphthalene | 90-12-0 | greater than 200 °F (NTP, 1992) | Danger |
| Dimethyl Sulfoxide | 67-68-5 | 203 °F (NTP, 1992) | Warning |
| 2-Methylnaphthalene | 91-57-6 | 208 °F (NTP, 1992) | Warning |
| Propylene Glycol | 57-55-6 | 210 °F (NTP, 1992) | Danger |
| Citric Acid | 77-92-9 | 100 °C | Warning |
| Benzyl Alcohol | 100-51-6 | 213 °F (NTP, 1992) | Warning |
| 1,6-Hexanediol | 629-11-8 | 102 °C (216 °F) - closed cup | — |
| Neopentyl glycol | 126-30-7 | 225 °F (USCG, 1999) | Danger |
| Ethylene Glycol | 107-21-1 | 232 °F (NTP, 1992) | Warning |
| Biphenyl | 92-52-4 | 235 °F (NTP, 1992) | Warning |
| 1,4-Butanediol | 110-63-4 | 247 °F (NTP, 1992) | Warning |
| 1,3-Butanediol | 107-88-0 | 250 °F (121 °C) (Cleveland Open Cup) | Warning |
| Anthracene | 120-12-7 | 250 °F (NTP, 1992) | Danger |
| Toluene 2,4-Diisocyanate | 584-84-9 | 250 °F (NTP, 1992) | Danger |
| 1-Dodecanol | 112-53-8 | 260 °F (USCG, 1999) | Warning |
| Ammonia | 7664-41-7 | 132 °C (270 °F) - closed cup | Danger |
| Benzophenone | 119-61-9 | greater than 270 °F (USCG, 1999) | Danger |
| Dipropylene Glycol | 25265-71-8 | 280 °F (NTP, 1992) | Danger |
| Acrylamide | 79-06-1 | 280.4 °F (EPA, 1998) | Danger |
| 1-Tetradecanol | 112-72-1 | 285 °F (USCG, 1999) | Warning |
| Diethylene Glycol | 111-46-6 | 290 °F (NTP, 1992) | Warning |
| Mannitol | 69-65-8 | greater than 300 °F (NTP, 1992) | — |
| Fluorene | 86-73-7 | 151.0 °C (303.8 °F) - closed cup | Warning |
| Glycerol | 56-81-5 | 320 °F (NTP, 1992) | — |
| Triethylene Glycol | 112-27-6 | 330 °F (NTP, 1992) | Warning |
| Phenanthrene | 85-01-8 | 340 °F (NTP, 1992) | Warning |
| Trimethylolpropane | 77-99-6 | 172 °C c.c. | Danger |
| Cetyl Alcohol | 36653-82-4 | 175 °C | Warning |
| Tetraethylene Glycol | 112-60-7 | 360 °F (USCG, 1999) | Warning |
| Triethanolamine | 102-71-6 | 365 °F (NTP, 1992) | Warning |
| Fluoranthene | 206-44-0 | 198.0 °C (388.4 °F) Closed cup | Warning |
| Stearyl Alcohol | 112-92-5 | 392 °F (200 °C) (Closed cup) | Warning |
| Pyrene | 129-00-0 | >200.0 °C (>392.0 °F) | Warning |
| Diphenylmethane diisocyanate | 101-68-8 | 425 °F (NTP, 1992) | Danger |
| Pentaerythritol | 115-77-5 | About 240 °C (open cup) | — |
| Sorbitol | 50-70-4 | 542 °F (USCG, 1999) | — |
| Carbon Dioxide | 124-38-9 | Not applicable | Warning |
| Carbon Monoxide | 630-08-0 | NA (Gas) | Danger |
| Hydrogen Sulfide | 7783-06-4 | NA (Gas) | Danger |
| Hydrogen | 1333-74-0 | Flammable gas | Danger |
| Chloroform | 67-66-3 | None (EPA, 1998) | Danger |
| Sodium Cyanide | 143-33-9 | Not combustible (EPA, 1998) | Danger |
| Calcium Oxide | 1305-78-8 | Not flammable | Danger |
| Hydrofluoric Acid | 7664-39-3 | Not Flammable (EPA, 1998) | Danger |
| Tetrachloroethylene | 127-18-4 | No flash point in conventional closed tester. | Warning |
| Calcium Hydroxide | 1305-62-0 | /Calcium Hydroxide is/ non flammable | Danger |