Name | 3-Methyl-1,2-cyclopentanedione |
Synonyms | Methylcyclopentane-1,2- 3-Methylcyclopenta-1,2-dione 3-Methyl-1,2-cyclopentadione 3-Methyl-1,2-cyclopentanedione 2-Cyclopentanedione,3-methyl-1 3-Methylcyclopentane-1,2-dione (3R)-3-methylcyclopentane-1,2-dione (3S)-3-methylcyclopentane-1,2-dione 2-Hydroxy-3-methyl-2-cyclopenten-1-one |
CAS | 765-70-8 |
EINECS | 212-154-8 |
InChI | InChI=1/C6H8O2/c1-4-2-3-5(7)6(4)8/h4H,2-3H2,1H3/t4-/m1/s1 |
Molecular Formula | C6H8O2 |
Molar Mass | 112.13 |
Density | 1.0795 (rough estimate) |
Melting Point | 104-108°C(lit.) |
Boling Point | 170.05°C (rough estimate) |
Flash Point | 100 °C |
JECFA Number | 418 |
Water Solubility | soluble |
Solubility | Soluble in water. |
Vapor Presure | 0.978mmHg at 25°C |
Appearance | Powder |
Color | White to off-white |
Maximum wavelength(λmax) | ['259nm(EtOH)(lit.)'] |
BRN | 2076520 |
Storage Condition | Store below +30°C. |
Refractive Index | 1.4550 (estimate) |
MDL | MFCD00001417 |
Hazard Symbols | Xi - Irritant |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R43 - May cause sensitization by skin contact |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
WGK Germany | 3 |
TSCA | Yes |
HS Code | 29142900 |
FEMA | 2700 | METHYLCYCLOPENTENOLONE |
NIST chemical information | information provided by: webbook.nist.gov (external link) |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Introduction | 3-methylcyclopentane-1, 2-dione is an ortho-cyclic diketone. Ortho-cyclic diketones, including 1, 2-cyclopentanedione, 3-methyl -1, 2-cyclopentanedione (methylcyclopentanone), 1, 2-cyclohexanedione, 1, 2-cyclonodione, etc, they are important fine chemical intermediates, which are widely used in pharmaceutical, flavor and fragrance industries. |
Application | 3-methylcyclopentane-1, 2-dione, also known as methyl cyclopentanone, is an important edible flavor, It has a prominent maple-like sweet aroma, so it is known as Acer truncatum lactone. Because it has a caramel-like sweet fragrance and a Nut aroma, it has a wide range of uses, can be used in coffee, cocoa, chocolate, nuts and other flavors, but also a large number of tobacco flavor, detergents and cosmetics, can also be directly used in bread, cakes and other foods. |