Pre-gelatinized Starch (Cold Water Soluble Starch)

Pre-gelatinized Starch

Modified starch

Basic Information

Product class:: Modified starch
Chemical name:: Pre-gelatinized starch
English full name:: Pre-gelatinized Starch (Cold Water Soluble Starch)
Abbreviation:: Pre-gelatinized Starch

Product Direction

Native starch

Physical gelatinization and drying

Pre-gelatinized starch

Heating disrupts the native starch granule, after which the material is dried and milled. The resulting product develops viscosity in cold water, while performance varies with botanical source, process, particle size and formulation.

Product Overview

Pre-gelatinized starch is produced by physically gelatinizing starch, followed by drying and milling. Unlike native starch, it can hydrate and build paste viscosity in cold water without a cooking step. It is generally supplied as a white or off-white powder and is selected where rapid thickening, binding, adhesion, plasticity and water retention are needed in a dry-mix or granulation process.

(1) Performance Characteristics

Pregelatinization makes starch cold-processable. Hydration speed, viscosity profile, tack, water binding and film behavior depend on the starch source and manufacturing conditions, so products with the same general name may not perform identically.

1. Cold-water dispersion

The powder wets, swells and develops a paste in cold water without pre-cooking. Particle size and mixing intensity affect lump formation and hydration speed.

2. Viscosity and body

It builds viscosity rapidly and provides body to aqueous or powder systems. The final value depends on concentration, temperature, shear and holding time.

3. Binding and adhesion

Pregelatinized starch provides tack, cohesion and film formation, helping powders or granules retain shape during forming and drying.

4. Water retention and plasticity

Water binding can reduce rapid moisture migration and improve plasticity, handling and surface finish in mineral or powder formulations.

5. Compatibility and stability

Cement, gypsum, salts, fillers and other additives can change hydration and viscosity. Compatibility should be checked in the complete formulation.

(2) Product Uses & Functions

In construction mortar, wall putty and gypsum products, pre-gelatinized starch can provide rapid body, adhesion, plasticity and water retention. It often complements cellulose ethers but does not replace their full performance profile.

As a feed or granulation binder, it helps fine particles agglomerate, improves wet cohesion and supports pellet or granule integrity after drying.

In ceramic casting and foundry sand systems, it can improve green strength, moldability and handling before firing or final curing.

In papermaking, textile sizing and water-based adhesive systems, it can contribute tack, film formation, surface strength and process viscosity.

In fertilizer granulation and other industrial powder systems, it supports nucleation, particle growth and forming strength. Dosage should be balanced against water demand, drying speed and final disintegration requirements.

(3) Technical Indicators & Selection

Appearance: white or off-white powder.
Processing: physical gelatinization, drying and milling; no chemical identity should be inferred from the term alone.
Confirm cold-water hydration rate, viscosity, particle size, moisture, adhesion and water demand.
Select the grade by application and validate dosage using the actual powder composition, mixing energy and curing or drying process.

Product Samples

Hydroxypropyl Methyl Cellulose (HPMC)

Cellulose ether

Basic Information

Product class:: Cellulose ether
Chemical name:: Hydroxypropyl methyl cellulose
English full name:: Hydroxypropyl Methyl Cellulose (HPMC)
Abbreviation:: HPMC

Product Direction

Plant cellulose

Methyl and hydroxypropyl etherification

HPMC

Hydroxypropyl and methyl groups are introduced onto a cellulose backbone. Grade performance depends on substitution, molecular weight, viscosity, particle size, hydration method and formulation conditions.

Product Overview

HPMC is a non-ionic, water-soluble cellulose ether made from purified plant cellulose through alkalization and etherification. It is generally supplied as a white or off-white, odorless powder. After proper dispersion and hydration in cold water, it forms a uniform viscous solution that can provide water retention, thickening, binding, anti-sagging, lubrication and film formation.

(1) Performance Characteristics

HPMC is a high-purity water-soluble non-ionic cellulose ether. It is compatible with many ionic environments, but its hydration, viscosity and thermal-gel behavior remain dependent on grade, concentration, temperature and the other ingredients in the system.

1. Cold-water hydration

Correct wetting and dispersion allow HPMC to hydrate in cold water and form a uniform colloidal solution. Agglomeration control and mixing sequence are important.

2. Rheology and thickening

Different viscosity grades provide different solution body, sag resistance and handling. Measured viscosity changes with concentration, temperature, shear and test method.

3. Water retention

HPMC binds water and can slow moisture loss in cementitious or gypsum systems, supporting hydration, open time and workable consistency.

4. Binding and film formation

The polymer improves cohesion and can form flexible films, supporting adhesion, surface integrity and suspension stability.

5. Thermal and formulation response

HPMC exhibits reversible thermal gelation. Salts, surfactants, solvents and other additives can shift hydration and gel behavior, so grade selection must be formulation-specific.

(2) Product Uses & Functions

In dry-mix mortar, plaster and gypsum products, HPMC is used for water retention, thickening and workability. It can help reduce rapid water loss to absorbent substrates and support a more uniform application.

In tile adhesives, wall putty and insulation mortars, HPMC helps balance consistency, anti-sagging, open time, lubrication and wet adhesion. The proper grade depends on the binder, aggregate grading, water demand and application method.

In water-based coatings and inks, HPMC can assist rheology control, suspension, film formation and storage stability. Compatibility with pigments, fillers, surfactants and preservatives should be checked.

In personal-care and pharmaceutical systems, suitable high-purity grades are used as thickeners, binders, film formers and matrix polymers. Regulatory grade and compliance requirements must be confirmed separately for the intended market.

HPMC is also used in ceramics and other powder-forming systems to improve cohesion, lubrication and green strength. Dosage should be optimized because excessive viscosity may reduce mixing, pumping or leveling performance.

(3) Technical Indicators & Grade Selection

Appearance: white or off-white free-flowing powder.
Type: non-ionic water-soluble cellulose ether; viscosity grade and substitution type must be stated.
Confirm particle size, moisture, hydration method, solution clarity, target viscosity and thermal-gel requirements.
Final dosage and grade should be verified using the customer’s actual raw materials, water ratio, temperature and mixing process.

Product Samples

Sodium Carboxymethyl Cellulose (CMC)

Cellulose ether

Basic Information

Product class:: Cellulose ether
Chemical name:: Sodium carboxymethyl cellulose
English full name:: Sodium Carboxymethyl Cellulose (CMC)
Abbreviation:: CMC

Product Direction

Natural cellulose

Carboxymethylation

CMC

A cellulose backbone is carboxymethylated to form an anionic water-soluble cellulose ether. Formulation work focuses on dispersion, thickening, water retention, binding, suspension and film formation.

Product Overview

This product is a white or slightly yellow fibrous powder, granule or flocculent material. It is odorless, tasteless and non-toxic, readily disperses in water to form a colloidal solution, and is comparatively stable against light, heat and common chemicals. Its final dissolution and viscosity depend on grade, particle form and the preparation method.

(1) Product Uses & Functions

CMC has a broad functional range and can serve as an emulsifier, thickener, sizing agent, film former, fluid-loss-control agent and binder. In oil and geological drilling muds, it can help adjust physical parameters such as filtrate loss and viscosity.

In textile sizing, printing and dyeing, CMC can replace part of the grain starch, oils and animal glue traditionally used in a formulation. It helps protect cotton, silk, wool, chemical fibers, synthetic fibers and blends, improves surface smoothness and abrasion resistance, supports yarn drying and gloss, and can simplify desizing.

In textile printing paste, CMC functions as a thickener and emulsification aid. It can improve paste stability, color definition and penetration while supporting a softer hand and easier removal during downstream washing.

CMC is also used as a functional aid in synthetic detergents. It supports soil suspension and anti-redeposition performance, helping washed fabrics retain a cleaner appearance and softer feel.

In coatings, CMC can provide viscosity build, dispersion and thickening. It is also used in papermaking, silicate systems, refractory-fiber processing, footwear, leather, agricultural formulations and other industries where water binding, adhesion and rheology control are required.

(2) Technical Indicators

Appearance: white or slightly yellow powder, fibrous powder or granules.
Available form: white flocculent material.
Grade selection should consider target viscosity, dissolution speed, particle form, dosage and the customer’s actual process.

Product Samples

Sodium Carboxymethyl Cellulose (CMC) Product Samples 3

Carboxymethyl Starch (CMS)

Modified starch

Basic Information

Product class:: Modified starch
Chemical name:: Carboxymethyl starch
English full name:: Carboxymethyl Starch (CMS)
Abbreviation:: CMS

Product Direction

Natural starch

Carboxymethylation

CMS

A starch backbone is carboxymethylated to produce an anionic water-soluble modified starch. Its behavior is governed by substitution, salt content, pH, shear, water absorption and the surrounding formulation.

Product Overview

CMS is an important etherified modified starch and a water-soluble anionic polymer. It is used particularly in refractory materials, lost-foam coatings and 821 putty powder, and can also support mosquito-coil forming, briquetting, paste putty and other industrial systems. CMS is valued as a thickener and stabilizer, with its application range continuing to expand.

(1) Physicochemical Properties

Carboxymethyl starch is a white or pale-yellow, odorless and tasteless hygroscopic powder. It combines the ionic and coupling behavior of carboxyl groups with solution functions such as thickening, pasting, water absorption, adhesion and film formation. Precipitation may occur in the presence of heavy-metal or calcium ions.

1. Viscosity behavior

When degradation is controlled, viscosity generally rises with increasing substitution. Peak viscosity can increase while hot-paste stability changes. Residual salts, concentration, temperature and shear all influence the measured value. CMS is relatively stable from neutral to alkaline conditions; in weakly acidic systems, reduced solubility or precipitation may occur.

2. Water absorption

CMS swells fully in water and provides strong water uptake, supporting moisture retention and formulation body.

3. Disintegration and swelling

Its swelling and disintegration behavior can assist dispersion, wetting and forming, but the result must be assessed in the actual powder system.

4. Reaction with metal ions

CMS may react with heavy-metal and calcium ions to form precipitates, so water quality and ionic composition should be checked.

5. Other functions

CMS can also contribute water retention, penetration, emulsification, adhesion and film formation.

(2) Product Uses & Functions

CMS is used especially in refractory materials, lost-foam coatings, 821 putty powder, mosquito-coil forming, briquetting and paste putty, where it can provide thickening, binding, water retention, suspension stability and forming support. Other applications include oil drilling, coatings, graphite furnace mixes, granulation, incense products, papermaking, geological drilling and textile sizing. In textiles it can offer simple paste preparation, a flexible film and easier desizing; in coatings and papermaking it functions as a thickener, tackifier and strength aid.

(3) Selection Notes

Appearance: white or pale-yellow powder with some hygroscopicity.
Confirm viscosity under a stated concentration, temperature, spindle and shear condition.
Evaluate pH, salts, calcium or heavy-metal ions, water quality, dosage and mixing sequence through a controlled sample test.

Cellulose Ether & Modified Starch Product Knowledge

Basic Information

Product Direction

Product Overview

(1) Performance Characteristics

1. Cold-water dispersion

2. Viscosity and body

3. Binding and adhesion

4. Water retention and plasticity

5. Compatibility and stability

(2) Product Uses & Functions

(3) Technical Indicators & Selection

Product Samples

Basic Information

Product Direction

Product Overview

(1) Performance Characteristics

1. Cold-water hydration

2. Rheology and thickening

3. Water retention

4. Binding and film formation

5. Thermal and formulation response

(2) Product Uses & Functions

(3) Technical Indicators & Grade Selection

Product Samples

Basic Information

Product Direction

Product Overview

(1) Product Uses & Functions

(2) Technical Indicators

Product Samples

Basic Information

Product Direction

Product Overview

(1) Physicochemical Properties

1. Viscosity behavior

2. Water absorption

3. Disintegration and swelling

4. Reaction with metal ions

5. Other functions

(2) Product Uses & Functions

(3) Selection Notes

Product Samples

Confirm Performance in the Actual Formulation

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