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Starch, an important polysaccharide, has received considerable attention in recent years. While with the non-negligible disadvantages of low gelatinization temperature, insolubility in cold water, weak anti-retrogradation ability, heat variable viscosity, easy swelling, etc., native starch is always modified with chemical, physical, or biological. Hydroxypropylation is a chemical modification method commonly used on starch.
Classical hydroxypropyl starch is obtained by introducing the 2-hydroxypropyl group onto the O-2, O-3, and O-6 of a glucosyl unit. And the properties of modified starch are affected by the degree of modification. The basic properties of our hydroxypropyl starch are listed below:
| Product Name | : Hydroxypropyl Starch |
| Catalog | : BBC825418 |
| Appearance | : White to off-white powder |
| Water Content | : ≤15% |
| Fineness | : ≥98% |
| pH | : 5.0-8.0 (10% in H2O) |
| Whiteness | : ≥88 |
| SO2 | : ≤30mg/kg |
| Lead | : ≤1.0mg/kg |
| Total arsenic | : ≤0.5mg/kg |
| Hydroxypropyl content | : ≤7.0g/100g |
| Propylene chlorohydrin | : ≤1.0mg/kg |
Characteristics of this products
The introduction of hydroxypropyl group to starch molecules will effectively improve the properties of starch paste. Hydroxypropyl can produce steric hindrance effect to prevent the aggregation and crystallization of starch chain; in addition, the hydrophilic property of hydroxypropyl can weaken the internal hydrogen bond strength of starch particle structure and make it easy to expand and gelatinize. Preparation method is listed below.
Food
Textile
Pharmaceutical
Daily Chemical
Papermaking
Drilling
Others
Alfa Chemistry is a professional supplier of hydroxypropyl starches. For high quality products, professional technical service, use suggestion and latest industry news, please feel free to contact us.
Please kindly note that our products are for research use only.
