Sodium Carboxy Methyl Cellulose CMC: Buyer FAQs on Grade, Packaging and Safety

Start with the viscosity required by your formulation or process. This CMC is listed with a viscosity range of 50 to 1200 mPa·s for a 1% solution. The same product data gives a degree of substitution of 0.6 to 0.9, pH of 6.0 to 8.5, purity of 99.5%, chloride below 1.8%, and moisture below 10%.

The right choice depends on the role CMC must perform in your product. Its listed functions include thickening, film formation, bonding, moisture retention, colloidal protection, emulsification and suspension. It is described for use in petroleum, food, medicine, textile and paper applications. Send the intended application, target viscosity and required test conditions when asking for a grade recommendation, because the listed viscosity is tied to a 1% solution.

The product is packed in multi-layer paper bags lined with polyethylene, with a net weight of 25 kg per bag. Empty bags can be recycled or incinerated. For a purchasing inquiry, state the required quantity and any site requirements for receiving or handling 25 kg bags so the supplier can respond to the order details.

Keep unopened bags in a cool, dry place away from sunlight and avoid storage under pressure. Unopened packaging can be stored for several years. Once a bag is opened, air humidity can affect the product's moisture content, so the bag should be protected from humid conditions during use.

For a plant receiving the material, picture the bags moving from the delivery area to a dry storage location before production. Check that the planned storage area is protected from sunlight, pressure and humidity, and include the number of 25 kg bags in the purchasing request.

The product information directs buyers to the MSDS for product handling, shipping and storage information. Use that document when preparing site procedures and shipment arrangements. Ask the supplier to provide the applicable MSDS for the product and intended shipment, then review it with the personnel responsible for receiving and storing the bags.

Send the supplier your application, target viscosity, required quantity and destination when requesting a quotation and the applicable handling documentation.