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
448877
Chitosan
medium molecular weight
Synonym(s):
Deacetylated chitin, Poly(D-glucosamine)
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About This Item
Recommended Products
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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Related Categories
1 of 4
This Item | 419419 | 937657 | C3646 |
|---|---|---|---|
| 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
Features and Benefits
Physical form
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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Customers Also Viewed
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
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What is the particle size of this product (448877 chitosan)?
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The particle size of this product is not determined.
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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-
The shrimp sourced to produce this item are harvested in Iceland specifically for use in chitosan production.
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What is the purity of chitosan?
1 answer-
The minimum purity of this product is 75%. Purity is determined on a lot-specific basis.
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Could you please provide us the chemical formula of this chitosan compound?
1 answer-
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.
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Do you perform a chemical or enzymatic deacetylation on Chitin to obtain Chitosan? Which chemical or enzyme do you employ?
1 answer-
Unfortunately, the deacetylation method is considered proprietary.
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Which Chitosan has the highest quality, for research or for cosmetic purposes?
1 answer-
Unfortunately, none of the Chitosan products currently offered are suitable for cosmetic purposes.
Helpful?
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What is the polydispersity of medium molecular weight chitosan, product 448877?
1 answer-
Unfortunately, the polydispersity is not determined for for this item.
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This medium molecular chitosan is from crab or shrimp? Or other way to produce?
1 answer-
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?
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