Hydroxypropyl starch ether (HPS) is a fine white powder derived from natural plant materials through a modified, highly etherified reaction, followed by spray drying without the use of plasticizers. This advanced material offers a range of benefits across multiple industries, including construction, textiles, and daily chemical products. In this article, we explore the applications, features, technical specifications, and company background of hydroxypropyl starch ether, while providing insights into its significance in modern manufacturing processes.
Hydroxypropyl starch ether is a modified starch derivative designed to enhance the performance of various industrial products. Unlike conventional starch or modified starch, HPS is engineered to provide superior functionality in applications such as adhesives, coatings, and construction materials. Its unique properties make it an ideal choice for industries seeking to improve the workability, stability, and durability of their end products.

Hydroxypropyl starch ether is renowned for its rapid thickening ability, medium viscosity, and excellent water retention. These characteristics make it an essential additive in formulations where consistency and stability are critical. Below are the key features that set HPS apart from other starch derivatives:

The following table outlines the technical specifications of Hydroxypropyl Starch Ether Model-301, a widely used variant of the product:
| ITEM | Model-301 |
|---|---|
| Appearance | White to whitish powder |
| Hydroxypropyl | 13.0-19.0% |
| Solubility | Soluble in cold water |
| Fineness | 95% (80M) |
| Viscosity | 50-3000 mPa·s |
| Loss on Drying | ≤10% |
| Moisture | ≤10% |
| Recommended Dosage | 0.3-0.5% |
| Applications | Gypsum-based and cement-based mortar and wall putty |

Hydroxypropyl starch ether is extensively used in the construction sector as an additive for adhesives, coatings, and mortars. It improves the workability, sag resistance, and water retention of cement-based and lime-calcium-based putty products. When combined with methyl cellulose ether, HPS enhances the internal structure and crack resistance of materials, making it ideal for internal and external wall putty powders.

In the textile industry, HPS serves as a warp size, increasing the wear resistance and weaving efficiency of fabrics. Its high substitution degree also makes it an effective thickener for textile processing solutions.
Hydroxypropyl starch ether functions as a binder, suspending agent, and thickener in daily chemical products and cosmetics. Its ability to stabilize suspensions and emulsions makes it a valuable component in formulations such as lotions, shampoos, and detergents.
In the oil drilling sector, HPS helps stabilize boreholes and improve drilling conditions by preventing sloughing and flocculating cuttings. This enhances the efficiency and safety of drilling operations.

Pengze Technology (Shijiazhuang) Co., Ltd. is a leading manufacturer and supplier of hydroxypropyl starch ether and related products. With a focus on innovation, quality, and customer satisfaction, the company has established itself as a trusted partner in the chemical and construction industries. Pengze Technology's commitment to research and development ensures that its products meet the highest standards of performance and reliability.
For more information about Pengze Technology, visit their official website.

Hydroxypropyl starch ether is a versatile and high-performance additive that plays a critical role in modern industrial applications. Its unique properties, including rapid thickening, low dosage requirements, and improved workability, make it an indispensable component in the construction, textile, and chemical industries. By adhering to rigorous quality standards and leveraging advanced manufacturing techniques, companies like Pengze Technology continue to drive innovation and meet the evolving needs of global markets.
For further information on measurement standards and guidelines, refer to the National Institute of Standards and Technology (NIST). NIST provides authoritative resources on the International System of Units (SI) and measurement practices, ensuring consistency and accuracy in scientific and industrial applications.
Keywords: hydroxypropyl starch, hydroxypropyl starch ether, sodium hydroxypropyl starch phosphate, 9049 76 7, CAS 9049 76 7