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
448877
Chitosan
medium molecular weight
Synonyme(s) :
Deacetylated chitin, Poly(D-glucosamine)
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About This Item
Produits recommandés
Niveau de qualité
Forme
powder
Viscosité
200-800 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)
Solubilité
dilute aqueous acid: soluble
Chaîne SMILES
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
Clé InChI
FLASNYPZGWUPSU-SICDJOISSA-N
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Application
Caractéristiques et avantages
Forme physique
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
nwg
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, type N95 (US)
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Certificats d'analyse (COA)
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Articles
Carcinogenic compounds in elastomers: 1,3-butadiene and isoprene used in elastomer manufacturing, classified as carcinogenic by IARC.
Chitin, a natural polysaccharide, is the second most abundant natural biopolymer in the world, after cellulose.
Polymers, natural or synthetic, are vital in medical advancements, contributing to device and pharmaceutical development in therapy.
Chitosan is a naturally occurring polysaccharide ideally suited for use in medical supplies, devices, therapeutics, and diagnostics. The unique natural characteristics of chitosan include its cationic, biocompatible, biodegradable, non-toxic, non-immunogenic, and antimicrobial properties.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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?
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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?
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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?
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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?
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Unfortunately, the deacetylation method is considered proprietary.
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Which Chitosan has the highest quality, for research or for cosmetic purposes?
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Unfortunately, none of the Chitosan products currently offered are suitable for cosmetic purposes.
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What is the polydispersity of medium molecular weight chitosan, product 448877?
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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?
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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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What is deacetilation degree of this product?
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The deacetylation specification for this product is >/= 75 %. This value is reported in the lot specific Certificate of Analysis. Please see the sample Certificate of Analysis to review a typical test result: https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/448877-BULKBCCK4007.pdf
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