What is the use of calcium stearate?
Calcium stearate is primarily used as an acid scavenger, release agent and lubricant in the plastics industry, for waterproofing in construction, and as an anti-caking additive in pharmaceuticals and cosmetics.
What exactly is calcium stearate?
Calcium stearate is a compound of calcium with a mixture of solid organic acids obtained from edible sources. It is generally used as a solid-phase lubricant that reduces friction between particles of the substance to which it is added.
Is calcium stearate hygroscopic?
Calcium stearate and magnesium stearate are highly hygroscopic, depending on the hydrothermal conditions of the environment, so this must be standardized and monitored in pharmaceutical technologies.
Is calcium stearate a surfactant?
Calcium stearate is a carboxylate salt of calcium, classified as a calcium soap. The salt is a component of some lubricants, surfactant. It is a white waxy powder.
Is calcium stearate corrosive?
It has been shown that corrosion attacks occur massively for concrete without calcium stearate, whereas concrete that uses calcium stearate experiences less corrosion.
Is calcium stearate the same as calcium carbonate?
Calcium stearate is used as a food additive. It is expected to be minimally active, and is actually not added to products for its calcium content, but rather for manufacturing purposes as a carrier or binder. Calcium carbonate is an inexpensive OTC product that can be found in antacids such as Tums.
What is calcium stearate soluble in?
Insoluble in water, cold ethanol and diethyl ether, soluble in hot benzene, toluene, and turpentine, slightly soluble in hot ethanol and diethyl ether. It reacts with strong acid to be decomposed into stearic acid and corresponding calcium salt.
How do you dissolve calcium stearate?
Calcium Stearate will react with the HCL, hydrolyzing the metal salt into calcium chloride and fatty acid. To dissolve calcium stearate, you need a co-solvent system with polar and non-polar features. The ratio of the two is proportionate to the ratio of Ca to Stearate…or 10% MEK plus 90% Xylenes. Heat and stir.
Is calcium stearate safe?
Calcium stearate is also used in cosmetics and food products. Calcium stearate is used in oral drug formulations and is reported as nontoxic and nonirritant. It is listed on the FDA Generally Regarded as Safe database.
Is calcium stearate soluble in ethanol?
chemical properties Calcium stearate is an odorless, white powder, Insoluble in water, slightly soluble in hot ethanol.
What does calcium stearate come from?
Calcium stearate, the calcium salt of stearic acid derived from animal fats & oils or vegetable oils, with the chemical formula Ca(C18H35O2)2.
Is calcium stearate polar?
Lubricants containing polar groups, which preferentially wet the metal surface in the presence of PVC, such as calcium stearate, are excellent metal lubricants. Non-polar lubricants which do not wet the metal surface, such as paraffin wax, allow PVC to stick to the metal surface.