Isopropyl alcohol
CAS Number: 67-63-0
Chemical Formula: C3H8O
Synonyms: Isopropanol for analysis ACS 99.6%, Isopropanol residue free for electronic use 99.8%, Isopropanol pure 99.5+%
Appearance: Liquid
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Isopropanol, commonly called isopropyl alcohol, is the simplest secondary alcohol and an isomer of n-propanol. It is a colorless, flammable liquid with a strong odor similar to a blend of ethanol and acetone. It dissolves in water, ethanol, ether, benzene, chloroform, and most organic solvents, and forms an azeotrope with water. Key physical properties include density 0.7863 g/cm³, melting point -88.5 ℃, boiling point 82.5 ℃, flash point 11.7 ℃, ignition point 460 ℃, and refractive index 1.3772. Its vapor may irritate eyes, nose, and throat, and it can be absorbed through the skin. Vapors form explosive mixtures with air with an explosion range of 2.0%–12% by volume. It is a flammable, low-toxicity material with moderate explosion hazard; vapor toxicity is twice that of ethanol, while oral toxicity is lower than ethanol.
Chemical Properties
| Item | Value |
| Melting point | -89.5 °C |
| Boiling point | 82 °C(lit.) |
| density | 0.785 g/mL at 25 °C(lit.) |
| vapor density | 2.1 (vs air) |
| vapor pressure | 33 mm Hg ( 20 °C) |
| refractive index | n20/D 1.377(lit.) |
| FEMA | 2929 ISOPROPYL ALCOHOL |
| Fp | 53 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | water soluble completely |
| pka | 17.1(at 25℃) |
| form | Low Melting Solid |
| color | colorless |
| Specific Gravity | approximate 0.785(20/20℃)(Ph.Eur.) |
| PH | 7.0 (20°C) |
| Relative polarity | 0.546 |
| Odor | Like ethyl alcohol; sharp, somewhat unpleasant; characteristic mild alcoholic; nonresidual. |
| Odor Threshold | 26ppm |
| Odor Type | alcoholic |
| biological source | synthetic |
| explosive limit | 2-13.4%(V) |
| Water Solubility | miscible |
| FreezingPoint | -89.5℃ |
| λmax | λ: 260 nm Amax: 0.02 λ: 280 nm Amax: 0.01 |
| Merck | 14,5208 |
| JECFA Number | 277 |
| BRN | 635639 |
| Dielectric constant | 18.0 Ambient |
| Exposure limits | TLV-TWA 980 mg/m3 (400 ppm); STEL 1225 mg/m3 (500 ppm) (ACGIH); IDLH 12,000 ppm (NIOSH). |
| Stability | Volatile |
| Cosmetics Ingredients Functions | SOLVENT VISCOSITY CONTROLLING ANTIFOAMING PERFUMING |
| LogP | 0.050 |
| Surface tension | 21.3mN/m at 293.15K |
| CAS DataBase Reference | 67-63-0(CAS DataBase Reference) |
| IARC | 3 (Vol. 15, Sup 7, 71) 1999 |
| NIST Chemistry Reference | Isopropyl alcohol(67-63-0) |
| EPA Substance Registry System | Isopropanol (67-63-0) |
| Absorption | in accordance |
Safety Information
| Item | Value |
| Hazard Codes | Xi,F,Xn |
| Risk Statements | 11-36-67-40-10-36/38 |
| Safety Statements | 7-16-24/25-26-36/37 |
| RIDADR | UN 1219 3/PG 2 |
| OEB | A |
| OEL | TWA: 400 ppm (980 mg/m3), STEL: 500 ppm (1225 mg/m3) |
| WGK Germany | 1 |
| RTECS | NT8050000 |
| F | 3-10 |
| Autoignition Temperature | 750 °F |
| TSCA | Yes |
| HS Code | 2905 12 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Hazardous Substances Data | 67-63-0(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats 5.8 g/kg (Smyth, Carpenter) |
| IDLA | 2,000 ppm [10% LEL] |
Product Application
Isopropyl alcohol is a vital chemical product and raw material widely used in pharmaceuticals, cosmetics, plastics, fragrances, and paints. It serves as a dehydrating and cleaning agent in the electronics industry, and as an analytical reagent for detecting barium, calcium, magnesium, nickel, potassium, sodium, and strontium. It is also used as a chromatographic reference standard.
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