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Sodium CarboxyMethylCellulose(CMC)

01 Overview

Sodium carboxymethyl cellulose (CMC) is an anionic cellulose ether that dissolves in water to form a transparent colloidal solution. By varying the degree of substitution, viscosity, and particle size, CMC can be produced in different specifications. It finds extensive applications in industries such as food processing, papermaking, coatings, detergents, and drilling.

Sodium Carboxy Methyl Cellulose (CMC)

CAS:9004-32-4

Brief Introduction

SidleyCel® Sodium CarboxyMethylCellulose (CMC) is anionic cellulose ether made from cotton fiber by alkalization, etherification, purification, drying, grinding or granulation. It has the appearance of white powder or granules and the colloid solution has functions like thickening, stabilizing, emulsifying, suspending, film-forming etc. CMC is widely used in food, toothpaste, paper making, ceramics, printing and dyeing, oil drilling and other industries.

SdielyCel Viscosity Degree of Substitution Purity % Applications
10FL30 20-40CPS(2%.25℃) ≥1.0 99.5 Lactic beverage;Yogurt
9FM500 500-1000CPS(1%.25℃) 0.85-0.95 99.5 Juice
7FH3000 3000-4000CPS(1%.25℃) 0.75-0.85 99.5 Plant-based beverage
7FH5000 5000-6000CPS(1%.25℃) 0.75-0.85 99.5 Ice cream
7FH7000 7000-8000CPS(1%.25℃) 0.75-0.85 99.5 Ice cream

SidleyCel® CMC has benefits like good acid resistance, salt tolerance, high transparency, less free cellulose and gel particles, fast dissolution and good fluidity.

  1. CMC can prevent the protein in yoghurt from coagulating and delamination.
  2. CMC can make water, fat and protein well mixed, dispersed and emulsified in ice cream, avoid ice crystals, improve taste and keep uniformity of final products.
  3. CMC can ensure the stability of acid drinks and extend its shelf life due to its good degree of substitution.
  4. CMC itself has no calorific value and is a good choice for manufacturing low-calorie foods.
We also provide these products:
Ceramic Grade CMC |Detergent Grade CMC |CoatingGrade CMC | Oil-drilling Grade CMC |Printing and dyeing Grade CMC|Mineral grade

02 Toothpaste grade CMC

Sodium Carboxymethyl Cellulose Toothpaste grade is applicable to the toothpaste industry. As the most important gum base in toothpaste, it mainly plays a role in shape forming and pasting. With good compatibility, it enables toothpaste to remain stable and without water diversion, the paste has a good water-retaining property. Moreover, the paste is fine, smooth and clean, and has good forming capability, acid resistance, better rheological properties and thixotropy.

SidleyCel Degree of substitution Viscosity Application
9TH500 0.85〜0.95 200-500CPS(Brookfield,1%.25℃) Toothpaste
10TH500 0.95〜1.20 200-500CPS(Brookfield,1%.25℃) Toothpaste·

Features

1. Toothpaste-grade CMC exhibits high replacement degree with superior salt and acid resistance.
2. Toothpaste-grade CMC possesses unique thixotropic properties, maintaining paste plasticity for extended periods.
3. Synergistic effects with HEC and xanthan gum enhance overall performance.

03 Papermaking grade CMC

Sodium carboxymethyl cellulose for papermaking is a highly effective papermaking additive featuring excellent water retention, dispersibility, and shear thinning properties. It is widely used in papermaking processes such as coating, stock addition, and surface sizing. Due to its high efficiency and low dosage requirements, CMC has substituted modified starch, polyvinyl alcohol, casein, and soy protein as the preferred raw material for papermaking coating agents.

SidleyCel Degree of substitution Viscosity(mPa•s) Purity(%)
9HP20 0.85-0.95 20-50(4%) > 98%
9HP100 0.85-0.95 100-300(4%) > 98%
7HP300 0.75-0.85 300-500(4%) > 98%
7HP1000 0.75-0.85 1000-2000(4%) > 98%
9SP20 0.85-0.95 20-50(4%) > 90%
9SP100 0.85-0.95 100-300(4%) > 90%
9SP300 0.85-0.95 300-500(4%) > 90%
9SP1000 0.85-0.95 1000-2000(4%) > 90%

Key Properties of Sodium Carboxymethyl Starch for Paper Coating

1. Enhances water retention, prevents migration of water-soluble binders into paper, thereby improving coating flow and enhancing coating quality;

2. Serves as an auxiliary binder with superior bonding strength, substituting 3-4 parts modified starch or soy casein and 1.5-2.0 parts synthetic latex per part CMC. This reduces total binder usage and increases coating solids content;

3. Provides lubrication, reducing doctor blade wear and extending blade service life;

4. Exhibits excellent film-forming properties, promoting coating integrity and film release. This results in cleaner, glossier coatings and prevents “orange peel” effects;

5. As a structural coating, it imparts pseudoplastic properties to the paint, thinning it under high shear forces. This is particularly suitable for high-solids content and high-speed coating applications;

6. It provides excellent stability to the paint, protecting synthetic binders from demulsification, maintaining coating system uniformity, and preventing deterioration during storage;

7. CMC serves as an excellent carrier for fluorescent whitening agents, enhancing whitening effects;

04 Product Video

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