Dialdehyde starch

Identifiers

CAS Number

* 9047-50-1 Y

MeSH | Dialdehyde+starch

PubChem CID

* 24776

Properties

Chemical formula

| (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).

N verify (what is YN ?)
Infobox references

Tracking categories (test):

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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

1. ↑ 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.
2. ↑ 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. https://www.sciencedirect.com/science/article/pii/S0144861796001609.
3. ↑ 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" (in EN). doi:10.1021/i360001a014. https://pubs.acs.org/doi/pdf/10.1021/i360001a014.
4. ↑ US patent 4001032, "Method of Making Nongelling Aqueous Cationic Dialdehyde Starch Compositions"

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*[CID]: Compound ID