Short Description:

Monosodium glutamate
White prismatic crystal or crystalline powder, odorless, with a unique meat flavor. Relative density 1.635, melting point 195 ℃, filling specific volume 1.20. Easy to dissolve in water, with a pH of 6.7-7.2 for a 5% aqueous solution, but difficult to dissolve in ethanol and ether. Does not absorb moisture, loses crystalline water at 120 ℃, undergoes intramolecular dehydration to form sodium pyroglutamate at 150-160 ℃, loses its freshness, and decomposes into pyrrole at around 270 ℃. Oral LD5016.2g/kg for mice, ADI does not require special regulations (FAO/WHO, 1994).