The molecular weight estimate of 310,000-375,000 Da is based upon a rough correlation to the viscosity specification. The molecular weight is not tested on a batch to batch basis.
419419
Chitosan
high molecular weight
Synonym(s):
Deacetylated chitin, Poly(D-glucosamine)
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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
form
(Coarse ground flakes and powder)
mol wt
310000-375000 Da
viscosity
800-2000 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.)
solubility
H2O: insoluble, organic solvents: insoluble
Quality Level
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Related Categories
1 of 4
This Item | 448877 | 448869 | 937657 |
|---|---|---|---|
| solubility H2O: insoluble, organic solvents: insoluble | solubility dilute aqueous acid: soluble | solubility dilute aqueous acid: soluble | solubility - |
| form (Coarse ground flakes and powder) | form powder | form powder | form powder or chunks (or Fibers) |
| mol wt 310000-375000 Da | mol wt - | mol wt 50,000-190,000 Da (based on viscosity) | mol wt >300 kDa |
| viscosity 800-2000 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.) | viscosity 200-800 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.) | viscosity 20-300 cP, 1 wt. % in 1% acetic acid(25 °C, Brookfield)(lit.) | viscosity - |
| Quality Level 100 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
Application
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% deacetylated
Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Jianjun Miao et al.
Langmuir : the ACS journal of surfaces and colloids, 28(9), 4396-4403 (2012-02-09)
Extracorporeal filter cartridges, filled with an activated carbon bead (ACB) adsorbent, have been used for removal of overdosed cancer drugs from the blood. Coatings on adsorbent matrices, poly(methyl methacrylate) (PMMA)/activated carbon bead and PMMA/chitosan/heparin/ACB composites, were tested to improve their
Luís Filipe-Ribeiro et al.
Data in brief, 17, 1201-1217 (2018-06-08)
Data in this article presents the changes on phenolic compounds and headspace aroma abundance of a red wine spiked with 4-ethylphenol and 4-ethylguaiacol and treated with a commercial crustacean chitin (CHTN), two commercial crustacean chitosans (CHTB, CHTD), one fungal chitosan
A D Anastasiou et al.
Acta biomaterialia, 71, 86-95 (2018-02-21)
A radical new methodology for the exogenous mineralization of hard tissues is demonstrated in the context of laser-biomaterials interaction. The proposed approach is based on the use of femtosecond pulsed lasers (fs) and Fe3+-doped calcium phosphate minerals (specifically in this
Antonia G Moutzouri et al.
BioMed research international, 2014, 740726-740726 (2014-07-06)
Cell adhesion on substrates is accompanied by significant changes in shape and cytoskeleton organization, which affect subsequent cellular and tissue responses, determining the long-term success of an implant. Alterations in osteoblast stiffness upon adhesion on orthopaedic implants with different surface
Jumana Akhtar et al.
Plant and soil, 428(1), 57-65 (2018-01-01)
Understanding the structures and functions of carbon-based molecules in soils is an important goal in the context of soils as an ecosystem function of immense importance. Polysaccharides are implicated in maintaining soil aggregate status but have not been extensively dissected
Articles
Collagen molecules play a critical role in tissue architecture and strength, and in cell-matrix interactions as insoluble ligands to regulate the diverse phenotypic activities of cells.
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.
Electrospinning technique applications discussed, emphasizing control of nanofibers and assembly into 3D architectures.
Hydrogel-based biomaterials for cell delivery and tissue regeneration applications are discussed.
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What is the minumum purity that applies to all batches? Is the purity measured? How was the molecular weight (even the historical) measured? If it was viscometry could you cite the equations i.e. Mark-Houwink-Sakurada (MHS) and the constants used?
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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What is the molecular weight?
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As indicated in the 'PROPERTIES' section above, the molecular weight of this material may range from 310-375 kDa. The molecular weight of this material is not determined on a lot to lot basis, however historical data indicates the majority of lots will have a range of 340-360 kDa.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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 degree of deacetylation of this group?
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The degree of deacetylation is not determined for this product.
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Is it suitable for food-grade use?
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This product is not a food grade item, it is intended for research use only. At this time, there is no food grade option available for this material.
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What is the density of this product?
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Unfortunately, the density is not determined for this product.
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The source of LMW, MMW and HMW chitosan. most of the LMW and HMW chitosan were products of Iceland and MMW chitosan was a product of USA. Is there a difference in sources of crustaceans used
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The source of all chitosan products may vary on a lot-to-lot basis. The source information is typically found on the Certificate of Origin.
Please see the DOCUMENTATION section of the product detail page and click on the "Certificate of Origin" tab to access a Certificate.https://www.sigmaaldrich.com/product/aldrich/419419#product-documentation
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What is the particle size of Product 419419, Chitosan?
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The particle size has not been determined. It is described as being course ground flakes or powder.
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What is the source of Product 419419, Chitosan?
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Chitosan is a natural biopolymer commerically derived from chitin from crustacean shells.
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