Carboxymethyl cellulose

Product Details

CasNo： 9000-11-7

MF： C2H4O3.x-Unspecified

Appearance： powder

Delivery Time： 15 days

Packing： 25kg/bag

Purity： 99%

Basic Information

• English Name: Carboxymethyl Cellulose, abbreviated as CMC
• CAS Number: 9000 - 11 - 7
• Molecular Formula: (C6​H7​O2​(OH)2​CH2​COONa)n​
• Appearance: Usually white or slightly yellow flaky fibrous powder or white powder, odorless and tasteless.

Physicochemical Properties

• Solubility: Easily soluble in cold water or hot water, forming a transparent solution with a certain viscosity. The solution is neutral or slightly alkaline. It is insoluble in organic solvents such as ethanol, ether, isopropyl alcohol, and acetone, but soluble in a solution of ethanol or acetone containing 60% water.
• Stability: Stable to light and heat. The viscosity decreases with the increase of temperature. The solution is stable at a pH value of 2 - 10. When the pH is lower than 2, solids will precipitate, and when the pH is higher than 10, the viscosity will decrease. The discoloration temperature is 227℃, and the carbonization temperature is 252℃. The surface tension of a 2% aqueous solution is 71mn/n.

Technical Indicators

• Purity: Generally, the purity can reach 99%.
• Moisture: Maximum 10%.
• Degree of Substitution (DS): Minimum 0.65.
• pH Value: The pH value range of a 1% solution is 6.0 - 8.5.
• Viscosity: The viscosity of a 1% solution (LVT, 30 rpm, sp.4) is 3500 - 4500 cps.
• Particle Size: Approximately 100 - mesh.

Product Characteristics

• Thickening Property: It can significantly increase the viscosity of aqueous solutions and is widely used as a thickener in various industries.
• Stability: Its aqueous solution has good stability and is not easily affected by external factors to cause delamination or precipitation.
• Film - forming Property: It can form a transparent film on the surface of objects, which has a certain protective and isolating effect.
• Emulsifying Property: It has a large emulsifying power for oils, waxes, etc., and can be used as an emulsifier.

Application Areas

• Food Industry: Used as a thickener, stabilizer, emulsifier, etc. in foods such as yogurt, jam, and bread to improve the taste and texture of foods and extend the shelf life.
• Pharmaceutical Industry: Used as a binder, disintegrant, thickener, etc. of drugs, and can also be used to prepare pharmaceutical excipients such as eye drops and ointments.
• Cosmetics Industry: As a thickener, stabilizer, and emulsifier in products such as creams, lotions, and shampoos to improve the stability and texture of products.
• Industrial Field: Used as a drilling mud treatment agent in the petroleum industry; as a sizing agent in the textile industry; as a paper surface sizing agent and sizing agent in the paper - making industry; as a green body adhesive in the ceramic industry, etc.

Packaging and Storage

• Packaging: Usually, the packaging specification is 25 kg/bag or 20 kg/bag. The inner bag is a polyethylene film bag, and the outer bag is a polypropylene woven bag or a multi - layer paper bag.
• Storage: Should be stored in a ventilated and dry place, and pay attention to moisture - proof, fire - proof, and high - temperature - proof.