5-Methylisoxazole
- CAS NO.：5765-44-6
- Empirical Formula: C4H5NO
- Molecular Weight: 83.09
- MDL number: MFCD00003152
- EINECS: 227-289-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:18
What is 5-Methylisoxazole?
The Uses of 5-Methylisoxazole
5-methyl-Isoxazole is a useful isoxazole derivative and building block. Upon pyrolysis, 5-methyl-Isoxazole forms a ketonitrile.
Properties of 5-Methylisoxazole
| Boiling point: | 122°C |
| Density | 1.018 |
| refractive index | n20/D 1.438(lit.) |
| Flash point: | 30°C |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| form | clear liquid |
| pka | -1.68±0.50(Predicted) |
| color | Colorless to Light yellow |
| BRN | 104680 |
| CAS DataBase Reference | 5765-44-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Isoxazole, 5-methyl-(5765-44-6) |
| EPA Substance Registry System | Isoxazole, 5-methyl- (5765-44-6) |
Safety information for 5-Methylisoxazole
| Signal word | Warning |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H226:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P242:Use only non-sparking tools. P243:Take precautionary measures against static discharge. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. |
Computed Descriptors for 5-Methylisoxazole
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