How do you make a 1 CMC solution?

Add 0.5 g of powdered carboxymethylcellulose sodium to 50 mL of water, while stirring to produce a uniform dispersion. Continue the stirring until a clear solution is produced. To 1 mL of the solution, diluted with an equal volume of water, in a small test tube, add 5 drops of 1- naphthol.

What is the difference between carboxymethyl cellulose and sodium carboxymethyl cellulose?

The term CMC stands for carboxymethyl cellulose. The key difference between sodium CMC and CMC is that sodium CMC is easily soluble in both hot and cold water and is easy to preserve, whereas CMC is poorly soluble in wate and is difficult to preserve as it is.

What classification is carboxymethylcellulose?

Carboxymethylcellulose is a compound used as an ophthalmic lubricant. Carboxymethylcellulose is a cellulose derivative that consists of the cellulose backbone made up of glucopyranose monomers and their hydroxyl groups bound to carboxymethyl groups.

How is CMC made?

Carboxymethylcellulose (CMC) CMC is formed after cellulose dispersion in alkali followed by treatment with monochloroacetic acid to substitute hydroxyl groups of glucose at positions O-2, O-3, or O-6. The degree of substitution ranges between 0.5 and 1 for CMC that is made for food applications.

How do you mix CMC with water?

Two to three parts of liquid per part of CMC should be sufficient. Dry-blend the CMC with any dry, non-polymeric material used in the formulation. Preferably, the CMC should be less than 20% of the total blend. Use a water eductor (Figure 1) to wet out the polymer particles rapidly.

What is carboxymethyl cellulose?

General description Sodium carboxymethyl cellulose (CMC) is a water dispersible sodium salt of carboxy-methyl ether of cellulose that forms a clear colloidal solution. It is a hygroscopic material that has the ability to absorb more than 50% of water at high humidity.

Does sodium carboxymethyl cellulose meet GHS hazard criteria?

Information on 130 consumer products that contain Sodium Carboxymethyl Cellulose in the following categories is provided: XU – indicates a substance exempt from reporting under the Chemical Data Reporting Rule, (40 CFR 711). Reported as not meeting GHS hazard criteria by 1696 of 1743 companies (only ~ 2.7% companies provided GHS information).

How do you use sodium carboxymethylcellulose?

Sodium carboxymethylcellulose (CAS Reg. No. 9004-32-4 ). The FCS will be added at the wet-end of a standard papermaking process as dry-strength agent in the manufacture of food-contact paper and paperboard products, except for use in contact with infant formula and breast milk (see Limitations/Specifications).

What is sodium carboxymethyl ether sodium used for?

Cellulose carboxymethyl ether sodium is the sodium salt of cellulose arboxymethyl and frequently used as viscous agent, paste and barrier agent. [1]. Du XH, et al. Dexamethasone and sodium carboxymethyl cellulose prevent postoperative intraperitoneal adhesions in rats.