Dialdehyde starch

Dialdehyde starch (CAS 9047-50-1) is a chemically modified starch produced by periodate oxidation, introducing aldehyde groups along the polymer backbone.

Where is Dialdehyde starch used?

• Paper and pulp: improves wet and dry strength by cross-linking cellulose fibers
• Textile finishing: imparts crease resistance and dimensional stability to woven fabrics without formaldehyde-based systems
• Leather processing: tanning auxiliary that cross-links collagen fibers to improve firmness and water resistance
• Food-grade: rheology modifier and texture agent in starch-based formulations
• These reactive groups enable cross-linking with proteins, cellulose, and other polymers.

Commercial specifications

• Oxidation level expressed as percentage of aldehyde groups per anhydroglucose unit
• Technical and food-grade specifications; oxidation levels generally 20% to 100%
• Packaging in multi-kilogram bags or bulk quantities