4-Hydroxypentanoic acid lactone
Gamma-Valerolactone
CAS: 108-29-2
Molecular Formula: C5H8O2
4-Hydroxypentanoic acid lactone - Names and Identifiers
| Name | Gamma-Valerolactone |
| Synonyms | γ-Valeroactone Gamma-Valerolactone gamma-Pentanolactone GAMMA-VALEROLACTONE NATURAL 5-methyldihydrofuran-2(3H)-one 4-Hydroxypentanoic acid lactone 4,5-Dihydro-5-methyl-2(3H)-franone (5R)-5-methyldihydrofuran-2(3H)-one (5S)-5-methyldihydrofuran-2(3H)-one 4,5-Dihydro-5-methyl-2(3H)-furanone γ-Methyl-γ-butyrolactone, 4,5-Dihydro-5-methyl-2(3H)-furanone, 4-Hydroxypentanoic acid lactone γ-Methyl-γ-butyrolactone, (±)-γ-Valerolactone, 4,5-Dihydro-5-methyl-2(3H)-furanone, 4-Hydroxypentanoic acid lactone |
| CAS | 108-29-2 |
| EINECS | 203-569-5 |
| InChI | InChI=1/C5H8O2/c1-4-2-3-5(6)7-4/h4H,2-3H2,1H3/t4-/m0/s1 |
| InChIKey | GAEKPEKOJKCEMS-UHFFFAOYSA-N |
4-Hydroxypentanoic acid lactone - Physico-chemical Properties
| Molecular Formula | C5H8O2 |
| Molar Mass | 100.12 |
| Density | 1.05g/mLat 25°C(lit.) |
| Melting Point | −31°C(lit.) |
| Boling Point | 207-208°C(lit.) |
| Flash Point | 204.8°F |
| JECFA Number | 220 |
| Water Solubility | MISCIBLE |
| Solubility | Miscible with water, soluble in alcohol, ether, ketone, carbon tetrachloride. |
| Vapor Presure | 30-44Pa at 20-25℃ |
| Vapor Density | 3.45 (vs air) |
| Appearance | Transparent liquid |
| Color | Clear colorless |
| BRN | 80420 |
| PH | 7 (H2O, 20℃) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | n20/D 1.432(lit.) |
| MDL | MFCD00005400 |
| Physical and Chemical Properties | Density 1.05 melting point -31°C boiling point 207-208°C refractive index 1.432-1.434 flash point 96°C water-soluble MISCIBLE |
| Use | For food flavor, medicine. |
4-Hydroxypentanoic acid lactone - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36 - Irritating to the eyes R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S39 - Wear eye / face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 2 |
| RTECS | LU3580000 |
| TSCA | Yes |
| HS Code | 29322980 |
4-Hydroxypentanoic acid lactone - Introduction
Can be miscible with water, many organic solvents, resins and waxes. The pH of the 10% aqueous solution is 4.2.
Last Update：2022-10-16 17:11:55
4-Hydroxypentanoic acid lactone - Reference Information
| FEMA | 3103 | GAMMA-VALEROLACTONE |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | γ-valerolactone is a naturally occurring chemical substance in fruits and is often used as a food additive. It can be converted into liquid olefins and can be used as a transportation fuel. GB 2760-1996 provisions are allowed to use edible spices. Mainly used to prepare peach, coconut, vanilla and other flavors. γ-valerolactone has strong reaction ability and can be used as resin solvent and intermediates of various related compounds. It is also used as lubricant, plasticizer, gelling agent of non-ionic surfactant, lactone additive of leaded gasoline, and dyeing of cellulose ester and synthetic fiber. Gamma-valerolactone has vanillin and coconut aromas. Our GB2760-86 stipulates that edible spices are allowed to be used. Mainly used to prepare peach, coconut, vanilla and other flavors. |
| content analysis | determined by method 1 in ester determination method (OT-18). The sample amount taken is 0.8g. The equivalent factor (e) in the calculation is 50.06. Or by gas chromatography (GT-10-4) with non-polar column method. |
| toxicity | LD508800mg/kg (rat, oral). |
| usage limit | FEMA(mg/kg): soft drink 4.0; Cold drink 20; Candy 50; Baked food 50. |
| Production method | It is synthesized from unsaturated carboxylic acids through a closed-loop reaction, such as acetoacetic acid and sulfuric acid co-heating, or levulinic acid in nickel, copper and other catalysts Hydrogenation in the presence. It is obtained by heating acetoacetic acid and sulfuric acid. It is obtained by hydrogenation of levulinic acid in the presence of nickel, copper and other metal catalysts. |
Last Update：2024-04-09 20:52:54
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