| 3-Methyl-2-cyclopenten-1-one Basic information |
| Product Name: | 3-Methyl-2-cyclopenten-1-one |
| Synonyms: | 3-METHYL-2-CYCLOPENTEN-1-ONE FOR SYNTHES;1-Methyl-1-cyclopenten-3-one;3-methyl-2-cyclopenten-1-on;3-Methyl-cyclopent-2-enone;3-Methyl-2-cyclopentenone 97%;3-Methyl-2-cyclopenten-1-one, 97%+;3-Methyl-2-cyclopenten-1-one, GC 98%;3-Methyl-2-cyclopenten-1-one, stabilised |
| CAS: | 2758-18-1 |
| MF: | C6H8O |
| MW: | 96.13 |
| EINECS: | 220-421-5 |
| Product Categories: | C3 to C6;Carbonyl Compounds;ketone;Ketones;Building Blocks;C3 to C6;Carbonyl Compounds;Chemical Synthesis;Organic Building Blocks;Pyridines |
| Mol File: | 2758-18-1.mol |
| 3-Methyl-2-cyclopenten-1-one Chemical Properties |
| Melting point | 3-5 °C (lit.) |
| Boiling point | 74 °C/15 mmHg (lit.) |
| density | 0.980 g/mL at 20 °C 0.971 g/mL at 25 °C (lit.) |
| FEMA | 3435 | 1-METHYL-1-CYCLOPENTEN-3-ONE |
| refractive index | n |
| Fp | 150 °F |
| storage temp. | 2-8°C |
| form | Liquid |
| color | Clear light yellow to yellow-brown |
| PH | 4.9 (10g/l, H2O, 20℃) |
| Water Solubility | miscible |
| JECFA Number | 1105 |
| BRN | 1280476 |
| CAS DataBase Reference | 2758-18-1(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Cyclopenten-1-one, 3-methyl-(2758-18-1) |
| EPA Substance Registry System | 3-Methyl-2-cyclopenten-1-one (2758-18-1) |
| Safety Information |
| Risk Statements | 36/38 |
| Safety Statements | 24/25 |
| RIDADR | 1224 |
| WGK Germany | 3 |
| TSCA | Yes |
| PackingGroup | III |
| HS Code | 29142900 |
| MSDS Information |
| Provider | Language |
|---|---|
| 3-Methyl-2-cyclopenten-1-one | English |
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| 3-Methyl-2-cyclopenten-1-one Usage And Synthesis |
| Description | May be prepared by dehydrohalogenation of 2-chloro-l-methylcyclopentan-3-one. |
| Chemical Properties | 1-Methyl-1-cyclopenten-3-one has a sweet-floral, warm-spicy and diffusive yet quite tenacious odor. |
| Chemical Properties | clear light yellow to yellow-brownish liquid |
| Occurrence | Reported found in roasted onion, cooked pork, black tea, soybean and dried bonito |
| Uses | 3-Methyl-2-cyclopentenone was used in the synthesis of 2-hydroxy-3-methyl-2-cyclopentenone. |
| Uses | It is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals. |
| Preparation | By dehydrohalogenation of 2-chloro-1-methyl-cyclopentan-3-one. |
| Synthesis Reference(s) | Journal of the American Chemical Society, 101, p. 494, 1979 DOI: 10.1021/ja00496a044The Journal of Organic Chemistry, 55, p. 371, 1990 |
| General Description | 3-Methyl-2-cyclopenten-1-one is a component of smoke flavoring. |
| 3-Methyl-2-cyclopenten-1-one Preparation Products And Raw materials |
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