Carboxymethyl Cellulose Sodium Salt for Sale
Product Overview of Carboxymethyl Cellulose Sodium salt (CMC)
Carboxymethyl Cellulose Sodium Salt (CMC) is a versatile and widely used cellulose derivative with various applications in food, pharmaceuticals, and industrial products. Below is a detailed overview of its specifications, properties, and applications.
Chemical Information
- Chemical Name: Carboxymethyl Cellulose Sodium Salt
- CAS Number: 9004-32-4
- Molecular Formula: C6H7NaO4
- Molecular Weight: Approximately 216.12 g/mol
Physical Properties
- Appearance: Almost white to slightly yellow powder
- Odor: Odorless
- Density: Approximately 1.59 g/cm³
- Solubility: Soluble in water
Specifications
| Property | Specification |
|---|---|
| Assay (as Na) | 6.5% – 8.5% (on dried basis) |
| pH (1% solution) | 6.5 – 8.0 |
| Viscosity (2% in water) | 400 – 800 cps at 20°C |
| Loss on drying (at 105°C) | Max 10% |
| Insoluble matter in water | Passes test |
| Chloride (Cl) | Max 0.25% |
| Heavy metals (as Pb) | Max 0.002% |
| Arsenic (As) | Max 0.0003% |
| Iron (Fe) | Max 0.02% |
Chemical Properties
- Degree of Substitution (DS): Typically ranges from 0.53 to 1.45, indicating the average number of carboxymethyl groups per anhydroglucose unit.
- pKa Value: Approximately 4.30, indicating its acidic properties.
Applications
Carboxymethyl Cellulose Sodium Salt is utilized across various industries due to its functional properties:
- Food Industry: Acts as a thickening agent, stabilizer, and emulsifier in products like sauces, dressings, and dairy items.
- Pharmaceuticals: Used as a suspending agent, tablet excipient, and viscosity-increasing agent in liquid formulations.
- Cosmetics and Personal Care: Serves as a thickener and stabilizer in lotions and creams.
- Industrial Applications: Employed in drilling muds, adhesives, printing inks, textile sizes, and as a protective colloid.
Handling and Safety
When handling Carboxymethyl Cellulose Sodium Salt, it is important to follow these safety guidelines:
- Use personal protective equipment such as gloves and eye protection.
- Avoid direct inhalation or contact with skin.
- Store in a cool, dry place away from incompatible substances.
For detailed handling instructions and safety information tailored to the intended use case, always refer to the specific product Safety Data Sheet (SDS).
Conclusion
Carboxymethyl Cellulose Sodium Salt is a critical ingredient in many formulations due to its unique properties. Its ability to modify viscosity and stabilize emulsions makes it invaluable across numerous applications. With its versatility and wide range of specifications, CMC is a reliable choice for industries seeking to enhance their products’ performance and stability.
References
1.Silva, L.S.; Lima, L.C.B.; Silva, F.C.; Matos, J.M.E.; Santos, M.R.M.C.; Santos Júnior, L.S.; Sousa, K.S.; da Silva Filho, E.C. Dye anionic sorption in aqueous solution onto a cellulose surface chemically modified with aminoethanethiol. Chem. Eng. J. 2013, 218, 89–98. [Google Scholar] [CrossRef]