Merck
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A7003

Sigma-Aldrich

Alginic acid from brown algae

Synonym(s):
Alginic acid from Macrocystis pyrifera (kelp), Mixed polymer of mannuronic and guluronic acid
Linear Formula:
(C6H8O6)n
CAS Number:
EC Number:
MDL number:

form

powder

Quality Level

pH range

1.5-3.5

mp

300 °C

solubility

H2O: insoluble, but swells
aqueous base: soluble

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

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General description

Alginic acid is a high molecular weight linear polymer isolated from seaweed. It is a linear β-1→4-linked polymer of n-mannuronic and L-guluronic acid. It is an acid polysaccharide present in the extracellular matrix of brown algae. It is reported to inhibit the reverse transcriptase activity of HIV. Structural investigation of alginic acid, a marine algal polysaccharide poly-α-L-guluronic acid, has been reported. Anti-inflammatory effect of alginic acid, isolated from the brown algae Sargassum wightii, in type II collagen induced arthritic rats has been reported. Pyrolysis of alginic acid using py-GC/MS over a wide temperature range (200-800°C) and thermogravimetric analysis (TGA) has been reported. It was reported to cause the biocorrosion of thin films of copper on germanium internal reflection elements (IREs).

Application

Alginic acid is suitable reagent used to study the in-vitro and in-vivo mitogenic activity of alginates. It is suitable for use in the spectrophotometric determination of transparent exopolymer particles by dye-binding assay.

Packaging

100, 250, 500 g in poly bottle
1 kg in poly bottle

Other Notes

A straight-chain, hydrophilic, colloidal, polyuronic acid composed primarily of anhydro-β-D-mannuronic acid residues with 1→4 linkage.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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