PRODUCT Properties
| Melting point: | 166°C |
| Boiling point: | 250.56°C (rough estimate) |
| Density | 1.4301 (rough estimate) |
| refractive index | 1.4455 (estimate) |
| solubility | Soluble (water, hot ethanol), slightly soluble (ethanol), insoluble (ether) |
| pka | 3.30±0.35(Predicted) |
| optical activity | Alpha form +98 → +50.9 Beta form +27 → +55.6 |
| LogP | -1.490 (est) |
| EPA Substance Registry System | D-Galacturonic acid (685-73-4) |
Description and Uses
D-Galacturonic acid is a sugar acid, an oxidized form of Dgalactose. It is the main component of pectin, in which it exists as the polymer polygalacturonic acid. It has an aldehyde group at C1 and a carboxylic acid group at C6. Other oxidized forms of D-galactose are D-galactonic acid (carboxylic group at C1) and meso-galactaric acid (mucic acid) (carboxylic groups at C1 and C6). It is also a uronic acid or hexuronic acid. Naturally occurring uronic acids are D-glucuronic acid, D-galacturonic acid, L-iduronic acid and D-mannuronic acid.
Biochemical research
Safety
| WGK Germany | 3 |
