3,4-dihydro-2H-chromen-2-one
dihydrocoumarin
CAS: 119-84-6;1341-36-2
Molecular Formula: C9H8O2
3,4-dihydro-2H-chromen-2-one - Names and Identifiers
3,4-dihydro-2H-chromen-2-one - Physico-chemical Properties
| Molecular Formula | C9H8O2 |
| Molar Mass | 148.16 |
| Density | 1.169 g/mL at 25 °C (lit.) |
| Melting Point | 24-25 °C (lit.) |
| Boling Point | 272 °C (lit.) |
| Flash Point | >230°F |
| JECFA Number | 1171 |
| Water Solubility | insoluble |
| Solubility | Methanol, chloroform |
| Vapor Presure | 13.6kPa at 20℃ |
| Appearance | Colorless to light yellow liquid |
| Specific Gravity | 1.169 |
| Color | Colourless to Off-White Low-Melting |
| BRN | 4584 |
| Storage Condition | Sealed in dry,2-8°C |
| Refractive Index | n20/D 1.556(lit.) |
| MDL | MFCD00006881 |
| Physical and Chemical Properties | WGK Germany:2 RTECS:DJ2981225 |
3,4-dihydro-2H-chromen-2-one - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 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 |
| RTECS | MW5775000 |
| TSCA | Yes |
| HS Code | 29322980 |
| Toxicity | The acute oral LD50 value in rats was reported as 1.65 g/kg (1.47-1.83 g/ kg) (Moreno, 1972a). The acute dermal LD50 value in rabbits was reported as > 5 g/kg (Moreno, 1972b). |
3,4-dihydro-2H-chromen-2-one - Reference Information
| FEMA | 2381 | DIHYDROCOUMARIN |
| LogP | 1.82 at 25℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | GRAS(FEMA). ADI is not specified (FAO/WHO,1994). LD50 1460mg/kg (rat, oral). |
| usage limit | FEMA(mg/kg): beverage 7.8; Cold drink 21.0; Candy 44.0; Baked food 28.0; Gelatin and pudding 10.0; Gum candy 78.0. |
| use | GB 2760-1996 specified as allowed edible spices. used in tobacco essence, edible essence and other kinds of essence |
| Production method | Coumarin is hydrogenated with nickel. Or it is converted by internal esterification of o-chlorohydride cinnamic acid. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:48:19
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