D-Mannose CAS 3458-28-4
Food Additives 2025-03-02
There are two types of D-Mannose, α-type and β-type. The α-type is a crystal of a methyl group having a melting point of 133 ° C; the β-type of an ethyl group having a melting point of 132 ° C (decomposition point). It is sweet and slightly bitter aftertaste. It is soluble in water (250%), insoluble in ethanol (0.4%), insoluble in ether.
Basic Information
| Attribute | Details |
|---|---|
| Name | D-Mannose |
| CAS Number | 3458-28-4 |
| Chemical Formula | C6H12O6 |
| Molecular Weight | 180.156 g/mol |
| Appearance | White or colorless crystalline powder |
Physical Properties
| Attribute | Details |
|---|---|
| Density | 1.6 g/cm³ |
| Melting Point | 133-132 °C (α-form: 133 °C; β-form: 132 °C) |
| Solubility | Highly soluble in water, poorly soluble in ethanol, insoluble in ether |
Occurrences & Preparation
| Attribute | Details |
|---|---|
| Natural Sources | Found in small amounts in coconut shells, gum lac, citrus peels, germinating seeds, and molasses |
| Preparation Methods | Extraction and purification from coconut shells, hydrolysis of polysaccharides rich in D-mannose, synthesis from D-mannitol, or isomerization of D-glucose |
Applications
| Attribute | Details |
|---|---|
| Biological Role | Important in glycosylation processes in cellular functions |
| Industrial Uses | Used as a nutritional supplement, food additive, and in biochemical research |
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