Short Description:

Sodium alginate 9005-38-3

Sodium alginate (CHONa), primarily composed of the sodium salt of alginic acid, is a polysaccharide biopolymer characterized by its wide availability, non-toxicity, ease of degradation, and good biocompatibility. Consequently, it holds significant application value in various industries such as pharmaceuticals, food, packaging, textile, and biomaterials.

Sodium alginate, also known as sodium alginate, sodium alginate, sodium alginate, algin, kelp gum, and sodium alginate, is primarily composed of the sodium salt of alginic acid, a mixture of polysaccharides. It is a gum extracted from brown algae such as kelp. It appears as a white or light yellow powder, is odorless and tasteless, has moisture absorption properties, with a relative density of 1.59, a bulk density of 87.39 kg/m3, a moisture content of 13%, an ash content of 23%, a blackening temperature of 150℃, a carbonization temperature of 340℃ (460℃), an ashing temperature of 480℃, a combustion heat of 10.46 J/g, and is insoluble in ethanol, ether, or chloroform. It is soluble in hot and cold water, with a pH value of 6-8 in a 1% aqueous solution, forming a viscous colloidal solution, and easily blends with proteins, starch, pectin, arabic gum, carboxymethyl cellulose, sucrose, glycerol, and sorbitol. It is insoluble in dilute acids with a pH less than 3. When the pH is between 6 and 9, its viscosity remains stable, and when heated above 80℃, its viscosity decreases.