The material is indeed considered deacetylated. The molecular weight specification is given in terms of the number of monomeric units (greater than or equal to 400), but it often measures at 2000 units or higher. Recent lots (066K1894, 046K1080, 105K1648, and 065K1306) all have an average molecular weight of approximately 400,000. This is based on a monomer molecular weight of 203 and a degree of polymerization of 2000.
G7753
Glycol chitosan
≥60% (titration), crystalline
Synonym(s):
Glycol chitin, deacetylated
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About This Item
Pricing and availability is not currently available.
Recommended Products
form
crystalline
Quality Level
mol wt
degree of polymerization ≥400
concentration
≥60% (titration)
storage temp.
−20°C
Application
Glycol chitosan increases membrane permeability and leakage in Glycine max Harosoy 63w cells. [1]
Other Notes
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 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Is the product considered deacetylated and is the 'degree of polymerization' specification given in a number of units?
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What is the degree of substitution for ethylene glycol in the product?
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The degree of substitution of ethylene glycol is not determined.
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It states that the degree of polymerization is over 400, but are more than 400 units continuously combined based on the chitosan unit?
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The polymerization degree is at minimum is 400. Please review the lot specific Certificate of Analysis for this value: https://www.sigmaaldrich.com/certificates/COFA/G7/G7753/G7753-BULK________SLBW9324__.pdf.
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What is the degree of deacetylation?
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This product is considered to be deacetylated. Chitosan is the deacetylated form of chitin. The degree of acetylation is not determined for this product, but is expected to be approximately 90%.
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How is the titration performed?
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The titration protocol is proprietary, however it is a colloidal titration method involving the use of potassium polyvinyl sulfate.
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