【CAS】431-03-8
Alias: Butandione; DiacetylForSynthesis;2,3-Buranedione;
Molecular formula: C4H6O2 Relative molecular mass: 86.09
Structural formula:
1.Product Property
2,3-Butanedione is an organic compound. It is a light yellow to yellow-green liquid with a strong odor. It is soluble in water, ethanol, and ether. It is mainly used for preparing cream flavoring agents and is the main raw material for the production of pyrazine-type fragrances.
2.
| Parameter | Industrial Grade | Food Grade (FEMA 2370) |
| Purity | ≥97.0% | ≥98.5% |
| Appearance | Yellow-green liquid | Pale yellow liquid |
| Odor | Strong, buttery | Pronounced butter |
| Refractive Index (20°C) | 1.393-1.397 | 1.394-1.396 |
| Density (20°C) | 0.980-0.990 g/cm³ | 0.983-0.988 g/cm³ |
| Acidity (as Acetic Acid) | ≤0.05% | ≤0.02% |
| Water Content | ≤0.2% | ≤0.1% |
3.Application scope and Usage
2,3-Butanedione is a naturally occurring aromatic compound, mainly used as a food flavoring agent (for butter and cream flavors, FEMA 2370), in dairy product processing (for artificial butter and cheese flavor enhancement), in snack seasoning (for popcorn and chips), and as a flavoring agent for tobacco products.
4.Package and Storage
Diacetyl is packaged in 25kg brown glass bottles or HDPE plastic drums. For food-grade use, it should be protected by nitrogen filling. It should be stored in a refrigerated environment (<15℃), strictly protected from light and heat, and kept away from fire sources and oxidants. It is highly volatile. During operation, ventilation is required. The shelf life is 12 months.
