Skip to Content
Merck

71238

Alginic acid sodium salt from brown algae

BioReagent, suitable for immobilization of micro-organisms

Synonym(s):

Algin, Sodium alginate

Slide 1 of 1
Sign In to View Organizational & Contract Pricing.

Select a Size

50 G

HUF 14,200.00

250 G

HUF 42,400.00

1 KG

HUF 144,000.00

HUF 14,200.00

Please contact Customer Service for Availability
Request a Bulk Order

About This Item

CAS Number:
9005-38-3
MDL number:
MFCD00081310
UNSPSC Code:
12352201
NACRES:
NA.25

Key Documents

View All Documentation

Skip To

Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

biological source

algae (brown)

Quality Level

100

product line

BioReagent

form

powder

ign. residue

≤30%

loss

≤15% loss on drying

color

white to light beige

pH

6.0-8.0 (10 mg/mL in H2O)

suitability

in accordance for gelation test
suitable for immobilization of micro-organisms

storage temp.

room temp

SMILES string

[Na+].[O-]C(=O)C1O[C@H]([C@H]([C@H]([C@@H]1O)O)O)O

InChI

1S/C6H10O7.Na/c7-1-2(8)4(5(10)11)13-6(12)3(1)9;/h1-4,6-9,12H,(H,10,11);/q;+1/p-1/t1-,2-,3-,4?,6+;/m0./s1

InChI key

MSXHSNHNTORCAW-MPGIDXPLSA-M

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
A2033A1112180947
Sigma-Aldrich

Sigma-Aldrich

71238

Alginic acid sodium salt from brown algae

Alginic acid sodium salt from brown algae Medium viscosity

Sigma-Aldrich

A2033

Alginic acid sodium salt from brown algae

Alginic acid sodium salt from brown algae low viscosity

Sigma-Aldrich

A1112

Alginic acid sodium salt from brown algae

Alginic acid sodium salt powder

Sigma-Aldrich

180947

Alginic acid sodium salt

biological source

algae (brown)

biological source

algae (brown)

biological source

algae (brown)

biological source

algae (marine)

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

form

powder

form

powder

form

powder

form

powder

suitability

in accordance for gelation test, suitable for immobilization of micro-organisms

suitability

-

suitability

-

suitability

-

color

white to light beige

color

white to brown

color

white to brown

color

-

product line

BioReagent

product line

-

product line

-

product line

-

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.

Other Notes

A straight-chain, hydrophilic, colloidal, polyuronic acid composed of guluronic and mannuronic acid residues.
Immobilization of cells[1][2]; or enzymes[3]; the alginate matrix can be liquefied by the addition of a chelating agent, making possible the recovery of developing colonies without affecting their continued growth[4].
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Storage Class Code

11 - 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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCM9496
BCCM1653
BCCK6329
BCCH6472
BCCH6471

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

O Smidsrød et al.
Trends in biotechnology, 8(3), 71-78 (1990-03-01)
In recent years, entrapment of cells within spheres of Ca2+ alginate has become the most widely used technique for immobilizing living cells. This versatile method includes applications ranging from immobilization of living or dead cells in bioreactors, immobilization of plant
C. Bucke
Methods in Enzymology, 135, 175-175 (1987)
W.H. Scouten
Solid Phase Biochemistry, 449-449 (1983)
Andreas Blaeser et al.
Advanced healthcare materials, 5(3), 326-333 (2015-12-03)
A microvalve-based bioprinting system for the manufacturing of high-resolution, multimaterial 3D-structures is reported. Applying a straightforward fluid-dynamics model, the shear stress at the nozzle site can precisely be controlled. Using this system, a broad study on how cell viability and
Alginate: an alternative to agar in plant protoplast culture.
Adaoha Mbanaso, E.N. and Roscoe, D.H.
Plant Sci. Lett., 25, 61-66 (1982)
View All Related Papers

Questions

1–8 of 8 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. What is the density of alginate 71238?

    1 answer

    1. The density of this product is not determined.

      Helpful?

  3. Can this product be used for gastronomic application, if not can you recommend high G alginate that can be.

    1 answer

    1. Alginic acid sodium salt from brown algae is not recommended for gastronomic applications. No alginic acid products are offered that are suitable for this type of use.

      Helpful?

  4. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  5. What is the viscosity of the alginate?

    1 answer

    1. The viscosity is not determined for this product on a lot specific basis. However, the viscosity is generally between 100 - 200 mPa sec for a 1% solution at 20°C. Please note that the viscosity is not a listed test specification and has not been validated.

      Helpful?

  6. What is the viscosity of this product?

    1 answer

    1. The viscosity of product is not tested on a lot specific basis, however historical values indicate a range of 100 - 200 cP at 1% in water, 20 °C.

      Helpful?

  7. WHAT IS THE MANNURONIC ACID TO GULURONIC ACID (M/G) RATIO OF THIS PRODUCT (71238)?

    1 answer

    1. The guluronic acid content in this product is approximately 70 % and the mannuronic acid content is approximately 30 %

      Helpful?

  8. What is the average molecular weight?

    1 answer

    1. The molecular weight is approx. 100,000 - 200,000 g/moL.

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service