- A natural starch from wheat or corn which has been chemically modified, the resultant starch is oxidized starch or Dialdehyde starch.
- DAS is a polymeric dialdehyde prepared from selective oxidation of starch by periodate ions which cleaves the C2-C3 bond of the anhydroglucose units of the starch polysaccharide chain to form the dialdehyde groups.
- Synonyms are polydialdehyde, oxidized starch, polymeric dialdehyde, starch2,3-dialdehydo.
- There are many uses including the paper industry, where it has been mainly to improve the wet strength of consumer products. These products include toilet paper and paper towels.
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