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| Identifiers | |
|---|---|
| ECHA InfoCard | 100.127.976 |
| MeSH | Dialdehyde+starch |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| (C6H8O5)n | |
| Appearance | White, opaque crystals |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Dialdehyde starch is a polysaccharide derived by chemical modification from starch. It is prepared by periodate oxidation of starch.1 As an aqueous dispersion, it can form a particle gel or a polymer network depending on preparation conditions.2 Hydrolysis with sulfurous acid yields glyoxal and erythrose.3
It has found use in the paper industry, where in it has been shown to improve the wet strength of consumer products like toilet paper and paper towels.4
References
References
- Yu, Jiugao; Chang, Peter R.; Ma, Xiaofei (2010). "The preparation and properties of dialdehyde starch and thermoplastic dialdehyde starch". Carbohydrate Polymers. 79 (2): 296. doi:10.1016/j.carbpol.2009.08.005.
- Veelaert, S.; de Wit, D.; Gotlieb, K. F.; Verhé, R. (1997-02-01). "The gelation of dialdehyde starch". Carbohydrate Polymers. 32 (2): 131–139. doi:10.1016/S0144-8617(96)00160-9. ISSN 0144-8617.
- Wilham, C. A.; McGuire, T. A.; Cleve, J. W. Van; Otey, F. H.; Mehltretter, C. L. (2002-05-01). "Hydrolysis of Dialdehyde Starch. Glyoxal and Erythrose Production in Sulfurous Acid-Barium Sulfite Solutions". ACS Publications. doi:10.1021/i360001a014. Retrieved 2026-01-24.
- US patent 4001032, "Method of Making Nongelling Aqueous Cationic Dialdehyde Starch Compositions"