Modified starch with excellent viscosity, screen penetration, and color yield. An economical and effective alternative to sodium alginate and CMC in textile printing and paper sizing applications.
Carboxymethyl Starch (CMS) is a water-soluble modified starch produced by the carboxymethylation of natural starch. It forms stable colloidal solutions with controllable viscosity and is widely used as a thickener, binder, and sizing agent across textile printing, paper manufacturing, and industrial applications.
ZHAOYUAN supplies CMS in grades tailored for reactive printing, disperse printing, paper sizing, and oilfield drilling fluid applications. The textile printing grades are a cost-effective alternative to sodium alginate, offering comparable performance at lower dosage.
High-viscosity, high-substitution grade. An ideal substitute for sodium alginate in reactive dye printing pastes. Provides excellent screen penetration, bright color shades, and high color yield with easy wash-out.
| Parameter | Specification |
|---|---|
| Appearance | White or off-white powder, odorless and tasteless |
| Degree of Substitution (DS) | 0.30 – 0.90 |
| Viscosity (4% solution) | ≥ 80,000 mPa·s |
| Chloride Content | ≤ 3.0% |
| Loss on Drying | ≤ 10.0% |
| pH (1% solution) | 6.0 – 9.0 |
| Solubility | Easily soluble in water; insoluble in ethanol and ether |
| Packaging | 25 kg kraft paper bags |
| Shelf Life | 6 months under proper storage conditions |
Key Features
Medium- to low-substitution grade. Rapidly disperses and swells in water, making it an ideal base material for disperse dye printing pastes. Excellent compatibility when blended with CMC, guar gum, tamarind gum, and other thickeners.
| Parameter | Specification |
|---|---|
| Appearance | White or off-white powder, odorless and tasteless |
| Degree of Substitution (DS) | 0.25 – 0.28 |
| Viscosity (4% solution) | ≥ 55,000 mPa·s |
| Chloride Content | ≤ 3.0% |
| Loss on Drying | ≤ 8.0% |
| pH (1% solution) | 6.0 – 8.0 |
| Solubility | Easily soluble in water; insoluble in ethanol and ether |
| Packaging | 25 kg kraft paper bags |
| Shelf Life | 3 months under proper storage conditions |
Key Features
CMS for paper sizing is used as a surface sizing agent and wet-end additive in paper and board manufacturing. It improves surface strength, reduces porosity, and enhances printability. An economical alternative to oxidized starch and CMC for standard paper grades. Compatible with both size press and film press application.
Typical viscosity range: 1,000 – 10,000 mPa·s. Specific grade specifications available on request — contact us with your paper type and application method.
Specifications available on request.
Modified starch for oilfield drilling fluid applications functions as a fluid loss control agent and viscosifier in water-based mud systems. It offers a cost-effective alternative to PAC and CMC in less demanding drilling conditions, particularly in low-temperature and low-salinity environments.
Suitable for use in freshwater and lightly brackish water-based drilling muds. Specifications and recommended dosage available on request — contact us with your well conditions and mud system details.
Specifications available on request.
| Standard Packaging | 25 kg kraft paper bags |
| Storage Conditions | Store in a cool, dry place away from moisture and direct sunlight. CMS is hygroscopic — keep sealed after opening. |
| Shelf Life | 3–6 months depending on grade (reactive printing: 6 months; disperse printing: 3 months) |
| HS Code | 3505.20 (Glues based on starches or dextrins) |
CMS is used as a thickening base in reactive and disperse dye printing pastes for textiles, a surface sizing agent in paper and board manufacturing, a warp sizing agent in textile weaving, and a cost-effective fluid loss control agent in oilfield drilling fluids.
The reactive printing grade has a higher degree of substitution (DS 0.30–0.90) and viscosity (≥80,000 mPa·s), giving excellent screen penetration and color yield on cotton and linen. The disperse printing grade has a lower DS (0.25–0.28) and viscosity (≥55,000 mPa·s), rapidly dispersing in water and blending well with CMC, guar gum, and tamarind gum for polyester printing pastes.
Yes, for less demanding conditions — CMS functions as a fluid loss control agent and viscosifier in freshwater and lightly brackish water-based drilling muds, offering a cost-effective alternative to PAC and CMC in low-temperature, low-salinity environments.
Shelf life varies by grade — 6 months for the reactive printing grade and 3 months for the disperse printing grade, under proper cool, dry storage conditions away from moisture and direct sunlight. CMS is hygroscopic, so bags should be kept sealed after opening.
Yes — CMS works as a surface sizing agent and wet-end additive in paper and board manufacturing, improving surface strength, reducing porosity, and enhancing printability at a typical viscosity range of 1,000–10,000 mPa·s, as an economical alternative to oxidized starch and CMC.
Minimum order is 1 MT (negotiable), with a typical lead time of 7–15 days depending on grade and quantity. Contact us with your grade, quantity, and application to confirm current lead times.
Pricing depends on grade (reactive printing, disperse printing, paper sizing, or oilfield), degree of substitution and viscosity, order quantity, and destination/shipping terms. Contact us with your grade and quantity for a quote.
Yes — a certificate of analysis (COA) confirming DS, viscosity, and purity, along with a material safety data sheet (MSDS), are available on request with every shipment.
ZHAOYUAN supplies CMS directly from China with export capability for bulk orders worldwide, and also delivers turnkey EPC engineering for cellulose ether production plants — giving customers both a chemical supply source and a manufacturing-side engineering partner.