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448877

Sigma-Aldrich

Chitosan

medium molecular weight

Synonym(s):

Deacetylated chitin, Poly(D-glucosamine)

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$327.00

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50 G
$92.60
250 G
$327.00

About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352201
NACRES:
NA.23

$92.60


In StockDetails


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form

powder

viscosity

200-800 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)

solubility

dilute aqueous acid: soluble

SMILES string

N([C@H]1[C@@H](O[C@@H]([C@H]([C@@H]1O)O[C@@H]4O[C@@H]([C@H]([C@@H]([C@H]4N)O)O[C@@H]5O[C@@H]([C@H]([C@@H]([C@H]5N)O)O[C@@H]6O[C@@H]([C@H]([C@@H]([C@H]6N)O)O[C@@H]7O[C@@H]([C@H]([C@@H]([C@H]7N)O)O[C@@H]8O[C@@H]([C@H]([C@@H]([C@H]8N)O)O[C@@H]9O[C@@H]([C@H](

InChI

1S/C56H103N9O39/c1-87-56(86)65-28-38(84)46(19(10-74)96-55(28)104-45-18(9-73)95-49(27(64)37(45)83)97-39-12(3-67)88-47(85)20(57)31(39)77)103-54-26(63)36(82)44(17(8-72)94-54)102-53-25(62)35(81)43(16(7-71)93-53)101-52-24(61)34(80)42(15(6-70)92-52)100-51-23(60)33(79)41(14(5-69)91-51)99-50-22(59)32(78)40(13(4-68)90-50)98-48-21(58)30(76)29(75)11(2-66)89-48/h11-55,66-85H,2-10,57-64H2,1H3,(H,65,86)/t11-,12-,13-,14-,15-,16-,17-,18-,19-,20-,21-,22-,23-,24-,25-,26-,27-,28-,29-,30-,31-,32-,33-,34-,35-,36-,37-,38-,39-,40-,41-,42-,43-,44-,45-,46-,47-,48+,49+,50+,51+,52+,53+,54+,55+/m1/s1

InChI key

FLASNYPZGWUPSU-SICDJOISSA-N

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Show Differences

1 of 4

This Item
419419937657C3646
Chitosan medium molecular weight

448877

Chitosan

Chitosan high molecular weight

419419

Chitosan

Chitosan biomedical research grade, high molecular weight

937657

Chitosan

Chitosan from shrimp shells, ≥75% (deacetylated)

C3646

Chitosan

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

200

solubility

dilute aqueous acid: soluble

solubility

H2O: insoluble, organic solvents: insoluble

solubility

-

solubility

acetic acid: water: 10 mg/mL, slightly hazy to hazy (with extensive sonication), H2O: insoluble, organic solvents: insoluble

form

powder

form

(Coarse ground flakes and powder)

form

powder or chunks (or Fibers)

form

powder or flakes

viscosity

200-800 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)

viscosity

800-2000 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)

viscosity

-

viscosity

-

Application

Chitosan may be used as a flocculant, in protein precipitation, encapsulating agent and aqueous thickener.
Forms gels with multivalent anions. Gives clear solutions that dry to strong, clear films.

Features and Benefits

Biocompatible, antibacterial and environmentally friendly polyelectrolyte with a variety of applications including water treatment, chromatography, additives for cosmetics, textile treatment for antimicrobial activity, novel fibers for textiles, photographic papers, biodegradable films, biomedical devices, and microcapsule implants for controlled release in drug delivery.
Biocompatible, antibacterial and environmentally friendly polyelectrolyte.

Physical form

75-85% deacetylated

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Questions

1–10 of 15 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/449/386/product-dating-information-mk.pdf

      Helpful?

  2. 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?

  3. What is the particle size of this product (448877 chitosan)?

    1 answer
    1. The particle size of this product is not determined.

      Helpful?

  4. Is the chitosan produced starting from shrimp shells that are sourced as waste from the food industry, or are these shrimps specifically farmed for chitosan production?

    1 answer
    1. The shrimp sourced to produce this item are harvested in Iceland specifically for use in chitosan production.

      Helpful?

  5. What is the purity of chitosan?

    1 answer
    1. The minimum purity of this product is 75%. Purity is determined on a lot-specific basis.

      Helpful?

  6. Could you please provide us the chemical formula of this chitosan compound?

    1 answer
    1. Chitasan is a biopolymer with a base molecular formula of C12H24N2O9. This particular product is a medium molecular weight option with a range of 190,000-310,000 Da.

      Helpful?

  7. Do you perform a chemical or enzymatic deacetylation on Chitin to obtain Chitosan? Which chemical or enzyme do you employ?

    1 answer
    1. Unfortunately, the deacetylation method is considered proprietary.

      Helpful?

  8. Which Chitosan has the highest quality, for research or for cosmetic purposes?

    1 answer
    1. Unfortunately, none of the Chitosan products currently offered are suitable for cosmetic purposes.

      Helpful?

  9. What is the polydispersity of medium molecular weight chitosan, product 448877?

    1 answer
    1. Unfortunately, the polydispersity is not determined for for this item.

      Helpful?

  10. This medium molecular chitosan is from crab or shrimp? Or other way to produce?

    1 answer
    1. This chitosan is from Pandalus Borealis (shrimp).
      Please see the sample Certificate of Origin for more information: https://www.sigmaaldrich.com/coo/undefined/448877/*

      Helpful?

1–10 of 15 Questions  

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