Hydroxypropyl Starch Ether CAS#9049-76-7
Hydroxypropyl starch ether (HPS) serves as a functional additive that strengthens the properties of cement- and gypsum-based dry mortars, providing improved workability, enhanced slip resistance, and greater thickening efficiency. In combination with cellulose ether, HPS contributes to optimized mortar workability and improved adhesion, producing a synergistic effect that boosts the composite performance.
HPS is manufactured from naturally sourced corn starch through a sequence of unit operations, including modification, etherification, spray processing, and drying. It is a fine white powder featuring good solubility in water and offering characteristics that distinguish it from conventional starch and other modified starch products.
Hydroxypropyl starch Chemical Properties
| English Name | Hydroxypropyl starch |
| English Synonyms | Starchhydroxypropylated;Starch 2-hydroxypropyl ether;Hydroxypropyl starch ether;5-[6-[[3,4-dihydroxy-6(hydroxymethyl)-5-methoxyoxan-2-yl]oxymethyl]-5-[3-(2,3-dihydroxy-2-methylpropoxy)-4-hydroxy-6-(hyd roxymethyl)-5-methoxyoxan-2-ylloxy-3,4-dihydroxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-methyloxane-3,4-d iol;HYDROXYPROPYL STARCH;2-hydroxypropyl starch;Hydroxypropylstrke;Starch, hydroxypropyl ether |
| CAS Number | 9049-76-7 |
| Molecular Formula | C24H42021 |
| Molecular Weight | 666.57768 |
| solubility | Practically insoluble in cold water and in ethanol (96 per cent). |
| InChIKey | BYSGBSNPRWKUQH-XPGIZXPCNA-N |
| EPA Substance Registry System | Starch, 2-hydroxypropyl ether (9049-76-7) |
| Cosmetic Ingredient Efficacy | Viscosity control |
| Cosmetic Ingredient Evaluation | Hydroxypropyl starch (9049-76-7) |
Product Usage
Hydroxypropyl starch ether (HPS) is produced from naturally sourced corn starch, undergoing a sequence of processing stages that include chemical modification, etherification, spray application, and final drying. It is obtained as a finely divided white powder with excellent aqueous solubility, and its performance attributes set it apart from traditional starch and other modified starch materials.
