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What is Hydroxypropyl Starch Ether?

Aug. 22, 2024

Hydroxypropyl Starch Ether (HPS)(CAS No.9049-76-7) is a non-ionic, modified starch derivative obtained by introducing hydroxypropyl groups into the starch molecule. This chemical modification enhances the natural properties of starch, making it more soluble, stable, and versatile for a wide range of applications. Hydroxypropyl Starch Ether is typically derived from natural sources like corn, potato, or tapioca, making it an eco-friendly alternative to synthetic chemicals used in various industries.

Physical and Chemical Properties

Hydroxypropyl Starch Ether exhibits unique physical and chemical properties that make it suitable for numerous applications:


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Chemical structure


Property

Details

Appearance

White or off-white fine powder

Solubility

Easily soluble in cold water, forming a clear, viscous solution

pH Value

Neutral to slightly alkaline (typically 6.0 - 8.5)

Moisture Content

Generally less than 10%, depending on the grade

Viscosity

Exhibits high viscosity, which can be adjusted based on the degree of substitution and molecular weight

Thermal Stability

Stable under moderate temperatures, with improved thermal resistance compared to native starch

Gelatinization Temperature

Lower than that of native starch, providing faster thickening and stabilization properties

Compatibility

Compatible with other ingredients, such as cellulose ethers, polymers, and emulsifiers

Applications of Hydroxypropyl Starch Ether

Hydroxypropyl Starch Ether's versatility and enhanced properties make it an ideal ingredient in various industries:


Construction Industry:

Cement-Based Products: 

HPS is widely used in cement-based products like mortars, plasters, and tile adhesives. It improves workability, water retention, and consistency, leading to better application performance and longer open times. Its thickening properties also enhance the adhesion and cohesion of these mixtures.

Gypsum-Based Products: 

In gypsum plasters, HPS acts as a thickener and stabilizer, improving spreadability and reducing cracking.

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Paints and Coatings:

Thickener and Stabilizer: 

HPS is utilized in paint formulations to control viscosity, improve film formation, and enhance brushability. It also contributes to the stability of the paint, preventing phase separation and settling of pigments.

Eco-Friendly Paints: 

As an alternative to synthetic thickeners, HPS provides a natural, biodegradable option for creating environmentally friendly paint products.

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Pharmaceuticals:

Tablet Formulations: 

In the pharmaceutical industry, HPS is used as a binder, disintegrant, and stabilizer in tablet formulations. It helps in achieving the desired tablet hardness while ensuring rapid disintegration upon ingestion, improving bioavailability.

Topical Applications: 

HPS is also employed in topical formulations like creams and ointments, where it acts as a thickener and stabilizer, ensuring even distribution of active ingredients.


Food Industry:

Thickening and Stabilizing Agent: 

In the food industry, HPS is used as a thickener, stabilizer, and emulsifier in products like sauces, dressings, soups, and dairy products. It enhances the texture, mouthfeel, and stability of food products, preventing separation and synthesis.

Gluten-Free Products: 

HPS is particularly beneficial in gluten-free baking, where it improves the texture and volume of baked goods by mimicking the properties of gluten.


Cosmetics and Personal Care:

Emulsion Stabilizer: 

In cosmetic formulations, HPS serves as an emulsion stabilizer, thickener, and film-former. It enhances the texture and sensory attributes of creams, lotions, and hair care products, providing a smooth, non-greasy feel.

Sunscreen and UV Protection: 

HPS is used in sunscreen formulations to improve the spreadability and uniformity of the product, ensuring effective UV protection.


Storage and Handling of Hydroxypropyl Starch Ether


Proper storage and handling of Hydroxypropyl Starch Ether are essential to maintain its quality and effectiveness:


  • Storage Conditions: HPS should be stored in a cool, dry place, away from direct sunlight, moisture, and extreme temperatures. The storage area should be well-ventilated, and the product should be kept in tightly sealed containers to prevent contamination and moisture absorption.

  • Shelf Life: Under optimal storage conditions, HPS typically has a shelf life of 12 to 24 months. However, it is advisable to use the product within the recommended timeframe to ensure its efficacy.

  • Handling Precautions: When handling HPS, it is important to use protective equipment such as gloves, masks, and safety goggles to avoid inhalation of dust and skin contact. In case of contact with eyes or skin, rinse thoroughly with water.

  • Disposal: Any waste material containing HPS should be disposed of in accordance with local regulations. It is important to avoid releasing large quantities into the environment, particularly into waterways, as it may cause localized pollution.

 

About TJCY


Tianjin Chengyi is a leading wholesaler and supplier of chemicals, offering high-quality products tailored to meet the diverse needs of various industries. With a commitment to innovation, sustainability, and customer satisfaction, TJCY provides reliable solutions for construction, pharmaceuticals, food, cosmetics, and other applications. Our products are developed with the highest standards of quality and performance in mind, ensuring that our clients receive the best possible outcomes in their formulations.

Whether you're looking for a trusted supplier for your industrial needs or seeking to explore the potential of Hydroxypropyl Starch Ether in your products, TJCY is here to support your goals. Visit our website to learn more about our offerings and how we can collaborate to achieve success together.


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