CARBOXYMETHYL STARCH (CMS)

CAS No.: 9063-38-1
Application: Textile printing

Carboxymethyl Starch (CMS) is a high-performance modified starch widely used in textile printing and dyeing. With excellent viscosity, smooth paste flow, and outstanding screen permeability, CMS ensures sharp, vibrant, and uniform color development on fabrics. It dissolves easily in water, provides stable rheology during printing, and minimizes fabric staining and residue. As an economical and efficient alternative to sodium alginate, CMS enhances print definition, improves production efficiency, and delivers high-quality printing results across a variety of textile materials.

1. CMS FOR REACTIVE PRINTING

This product is a high-viscosity, high-degree-of-substitution Carboxymethyl Starch (CMS). It is a widely used modified starch that dissolves easily in water, offers excellent viscosity, good screen permeability, and delivers bright, vivid colors. It is an ideal printing paste material and a superior substitute for sodium alginate in textile printing applications.

Properties

White or off-white powder, odorless and tasteless.
Easily soluble in water, forming a colloidal solution with certain viscosity.
Insoluble in ethanol, ether, and other organic solvents.
Hygroscopic in nature.

Specifications

Degree of substitution: typically between 0.3–0.9
Chlorides: ≤3%
Loss on drying: ≤10.0%
pH value: 6–9 (1% aqueous solution)
Viscosity (4% solution): ≥80,000 mPa·s

Application Features

Excellent solubility, forms paste quickly;
High paste yield, low dosage required, reducing overall cost;
Good screen permeability, producing bright colors with high color yield;
Strong chemical stability and good compatibility with dyes and auxiliary agents;
Easy washing-off, leaving a soft hand feel on the fabric.

Applications
Used for formulating printing pastes for disperse and reactive dyes.

Packaging & Storage
Packed in 25 kg kraft paper bags. Store in a cool, dry place. Shelf life: 6 months.

2. CMS FOR DISPERSE PRINTING

This product is a medium- to low-substitution Carboxymethyl Starch (CMS) that disperses and swells rapidly in water. It can be used as a base material for disperse dye printing and shows excellent synergistic performance when blended with CMC, guar gum, tamarind seed gum, and other printing thickeners to produce high-quality disperse printing pastes.

Properties

White or off-white powder, odorless and tasteless.
Easily soluble in water, forming a colloidal solution with moderate viscosity.
Insoluble in ethanol, ether, and other organic solvents.
Exhibits a certain degree of hygroscopicity.

Specifications

Degree of substitution: typically between 0.25–0.28
Chlorides: ≤3%
Loss on drying: ≤8.0%
pH value: 6–8 (1% aqueous solution)
Viscosity (4% solution): ≥55,000 mPa·s

Application Features

Good solubility, forms paste quickly;
High paste yield, low dosage required, reducing cost;
Good screen permeability, providing high color yield;
Strong chemical stability and good compatibility with dyes and chemical auxiliaries;
Easy washing-off, achieving satisfactory fabric hand feel.

Applications
Used for formulating disperse dye printing pastes.

Packaging & Storage
Packed in 25 kg kraft paper bags. Store in a cool, dry place. Shelf life: 3 months.

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