Carboxymethylcellulose calcium

Sodium carboxymethylcellulose2 (NaCMC, CMC) Calcium carboxymethylcellulose (CaCMC)... 

Substances that reduce hygroscopicity are also frequently added. This is discussed more fully in Vol. II (p. 453). The substances used are carboxymethylcellulose and calcium stearate (J. Taylor and Silljtto [54]). Silicone resins are used in France. 

Another method was suggested by J. Taylor and Sillitto [5], It consists in adding of 0.2-1.5% carboxymethylcellulose and calcium stearate to ammonium nitrate. The mechanism of the action of these compounds is based on the fact that carboxymethylcellulose gels rapidly when it comes into contact with water, forming a bar-... 

Carboxymethylcellulose Calcium (Calcium CMC) A calcium salt of polycar-boxymethyl ether of cellulose, calcium CMC is obtained by carboxymethylation of cellulose and conversion into calcium salt. Different molecular grades are prepared by changing the degree of carboxymethylation. It is available as a line powder, white to yellowish white in color, and hygroscopic in nature. Calcium CMC has swelling and viscosity-enhancing properties in water. It can swell twice its volume in water [25]. 

Other types of admixtures used with calcium aluminate cements include water reducers and superplasticizers (Section 11.4), which also act as retarders, and thickening agents, such as carboxymethylcellulose. Complex formulations may be used for special purposes for example, a ready-mix mortar for high-performance road repair might contain 55% Ciment Fondu and 45% sand, with glass fibre, aluminium powder, Li2C03, sodium gluconate and methyl ethyl cellulose (M93). 

BP Carmellose calcium JP Carmellose calcium PhEur Carmellosum calcicum USPNF Carboxymethylcellulose calcium... 

Carboxymethylcellulose calcium occurs as a white to yellowish-white, hygroscopic, fine powder. 

The USPNF 23 describes carboxymethylcellulose calcium as the calcium salt of a polycarboxymethyl ether of cellulose. 

The main use of carboxymethylcellulose calcium is in tablet formulations see Table 1), where it is used as a binder, diluent, and disintegrant. Although carboxymethylcellulose calcium is insoluble in water, it is an effective tablet disintegrant as it swells to several times its original bulk on contact with water. Concentrations up to 15% w/w may be used in tablet formulations above this concentration, tablet hardness is reduced. 

Carboxymethylcellulose calcium is also used in other applications similarly to carboxymethylcellulose sodium for example, as a suspending or viscosity-increasing agent in oral and topical pharmaceutical formulations. Carboxymethyl-... 

Carboxymethylcellulose calcium is a stable, though hygroscopic material. It should be stored in a well-closed container in a cool, dry place. 

Carboxymethylcellulose calcium is used in oral and topical pharmaceutical formulations, similarly to carboxymethylcellulose sodium, and is generally regarded as a nontoxic and nonirritant material. However, as with other cellulose derivatives, oral consumption of large amounts of carboxymethylcellulose calcium may have a laxative effect. 

Observe normal precautions appropriate to the circumstances and quantity of material handled. Carboxymethylcellulose calcium may be irritant to the eyes eye protection is recommended. 

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