English Name : Alginic acid from brown algae
Other names : alginic acid; alginic acid; alginic acid; alginic acid
CAS: 9005-32-7
(C6H8O6) n
Infrared Spectra Infrared spectrometry: matching and reference
Content ( carboxyl group ) ( dry basis ) : 19 - 25% ( titration analysis)
Loss on drying : (15% (2 g, 105 ° C, 4 hours)
Starch : not significant blue
Heavy Metal : ≤0.004%
Arsenic salt : ≤0.0003%
Appearance: white to light yellow-brown, odorless, tasteless powder of colloidal substance obtained by the algae, polymer β- mannuronate anhydrous dextrose dissolved in alkaline solution, slightly soluble in water. , very slightly soluble in cold water and organic solvent soluble alkali metal hydroxide 3 % aqueous solution of pH 1.3 to 5.5, can absorb 200 to 300 times its weight in water, place in warm conditions can slow decomposition, the molecular weight becomes smaller. as pharmaceutically acceptable adjuvant, as a tablet binder, disintegrating agents, thickeners, suspending agents mp :. 300 ° C.
Uses: scientific research, experiment emulsifier protective colloid .
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