Sodium alginate / sodium alginate / sodium alginate

Cas number 9005-38-3
Sodium alginate

White or light yellow powder. Usually as Food Additives, Flavor Enhancer. A hydrophilic polysaccharide proposed from the seaweed plant-kelp. Almost odorless and tasteless. Sensitive to moisture. It slowly dissolves in water and forms a viscous colloidal solution. It is insoluble in ethanol, ether, chloroform and acids with a pH below 3. The solution does not condense when heated.

Molecular weight structure unit: theoretical value 198.11, average true value 222.00, macromolecule 32000-250000
(AR)
Assay90.8-106% (titration)
Appearance Infrared spectrometry of white to light yellow-brown powder identification and control match Loss on drying <15% (2 g, 105 ° C, 4 hours)
Heavy metals (as Pb) <40 ppm
Sulfated ash 30.0%-36.0%
Arsenic As <3 ppm
Lead Pb <10 ppm

Project Chemical Pure
(CP)
Acid Value mgKOH / g≥ 230
PH: 1.5-3.5
Loss on drying≤ 15.0%
Residue On Ignition ≤ 5.0%
Iron salt Iron (Fe) ≤ 0.05%
Heavy Metals ≤ 0.004%
Arsenic ≤ 0.0003%
Keep in a dry and sealed place.

Product use stabilizer. Thickener. Used as an artificial semi-permeable membrane. Mordant.
The biochemical grade is used to fix cells and enzymes; such as the sodium alginate method to immobilize glutamate decarboxylase. The alginic acid matrix can be liquefied by adding a chelating agent.