All Photos(4)

A2033

Sigma-Aldrich

Alginic acid sodium salt from brown algae

Medium viscosity

Synonym(s):
Algin, Sodium alginate
CAS Number:
MDL number:
NACRES:
NA.25

Quality Level

biological source

algae (brown)

form

powder

viscosity

≥2,000 cP, 2 %(25 °C)(lit.)

storage temp.

2-8°C

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Application

Alginate, a colloidal polyuronic acid structural molecule capable of gelation, is used in the preparation of colloidal biodegradable structures such as gels, biofilms, beads, nanoparticles, and microcapsules suitable for applications that range from gel based separation technologies to drug delivery and cell preservation.

Packaging

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

Other Notes

A straight-chain, hydrophilic, colloidal, polyuronic acid composed of glucuronic and mannuronic acid residues.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. Can you use alginic acid sodium salt, Product A2033, as a support/gel?

    Yes. Here are some references for preparing alginic acid sodium salt as a support:Adaoha Mbanaso, E.N. and Roscoe, O.H., Plant Sci. Lett., 25, 61-66 (1982);Chee, R. and Cantliffe, D.J., In Vitro Cell. Develop. Biol., 25, 757 (1989);Draget, K.I., et al., Plant Physiol., 132, 552 (1988);Larkin, P.J., et al., Plant Sci., 58, 203 (1988).

  4. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  5. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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