| IUPAC name
| Systematic IUPAC name
| Other names
|Molar mass||180.16 g/mol|
|Appearance||White crystalline solid|
|Melting point|| α-D-glucose: 146 °C (295 °F; 419 K) |
β-D-glucose: 150 °C (302 °F; 423 K)
|90.9 g/100 ml (at 25 °C)|
|Solubility|| Slightly soluble in alcohols|
Insoluble in ethers, hydrocarbons, halocarbons
|Vapor pressure||~0 mmHg|
|209.2 J K−1 mol−1|
Std enthalpy of
|Safety data sheet||AcrosOrganics|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Glucose (occasionally referred to as grape sugar) is an organic compound with the molecular formula C6H12O6, found in sugar. Glucose is classified as a sugar, a monosaccharide, more specifically a hexose (6 carbon atoms).
Glucose has 16 stereoisomers, with the D-isomer or D-glucose, also known as dextrose, being the most important. It is one of the few isomers that occur widely in nature.
Glucose is the ubiquitous fuel in practically all biological organisms.
Glucose is an odorless, colorless white solid, with a sweet taste, very soluble in water, acetic acid, but less so in ethanol and methanol, and insoluble in most non-polar solvents, like hydrocarbons.
Glucose bars can be purchased from most stores. Purification may be required to remove additives or other contaminants.
Powdered glucose can be purchased from pharmacy and some food stores.
Glucose is made during photosynthesis from water and carbon dioxide, using energy from sunlight.
Glucose is produced commercially via the enzymatic hydrolysis of starch, corn starch being the most common form of starch used.
Inversion of sucrose (table sugar) will yield glucose and fructose. This can be achieved by heating a mixture of water:sucrose in a ratio of 1:2, with 0.1% citric acid added as a catalyst (though other acids can be used, such as ascorbic acid or potassium bitartrate). The solution is heated up to 114 °C for a few hours for complete separation of the two monosaccharides.
However, glucose is best bought than made, as it is cheaply available
- Sorbitol synthesis
Store-grade glucose is safe to consume, however lab-grade glucose is generally not.
Glucose should be kept in closed bottles, away from moisture and animals.
No special disposal is required. Discard it as you wish.