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Pigments Pigments
Pigments Pigments and dyes are called colorants. The ways in which colorants are used determines whether they are pigments or dyes. Pigments are water-and oil-insoluble natural and synthetic products that impart color to materials such as paper and plastics. Dyes, by contrast, are water-soluble... Read more
casein casein
casein , well-defined group of proteins found in milk, constituting about 80% of the proteins in cow's milk, but only 40% in human milk. Casein is a remarkably efficient nutrient, supplying not only essential amino acids, but also some carbohydrates and the inorganic elements calcium and phosphorus.... Read more
quinine quinine
quinine , white crystalline alkaloid with a bitter taste. Before the development of more effective synthetic drugs such as quinacrine, chloroquine, and primaquine, quinine was the specific agent in the treatment of malaria . Almost insoluble in water, it dissolves readily in alcohol and other... Read more
cholesterol cholesterol
cholesterol , fatty lipid found in the body tissues and blood plasma of vertebrates; it is only sparingly soluble in water, but much more soluble in some organic solvents. A steroid , cholesterol can be found in large concentrations in the brain, spinal cord, and liver. The liver is the most... Read more
detergent detergent
detergent , substance that aids in the removal of dirt. Detergents act mainly on the oily films that trap dirt particles. The detergent molecules have a hydrocarbon portion, soluble in oil, and an ionic portion, soluble in water. The detergent acts as an emulsifier, i.e., by bridging the water and... Read more
camphor camphor
camphor , C 10 H 16 O, white, crystalline solid ketone with a characteristic pungent odor and taste. It melts at 176°C and boils at 204°C. The natural variety, Japan camphor, is obtained by steam distillation of the wood of the camphor tree ( Cinnamomum camphora ) native to China, Japan,... Read more
barium meal barium meal
barium meal Some compounds of barium are poisonous, but barium sulphate is a harmless, white, insoluble substance that can be made into a tasteless suspension which is ‘radio-opaque’. This can be swallowed as a ‘barium meal’ to aid diagnosis of disorders of the upper... Read more
Fibrinolysis Fibrinolysis
fibrinolysis (fib-ri-nol-i-sis) n. the process by which blood clots are removed from the circulation, involving digestion of the insoluble protein fibrin by the enzyme plasmin.... Read more
sulfate sulfate
sulfate chemical compound containing the sulfate (SO 4 ) radical . Sulfates are salts or esters of sulfuric acid , H 2 SO 4 , formed by replacing one or both of the hydrogens with a metal (e.g., sodium) or a radical (e.g., ammonium or ethyl). Sulfates in which both hydrogens are replaced are... Read more
hydrogen sulfide hydrogen sulfide
hydrogen sulfide chemical compound, H 2 S, a colorless, extremely poisonous gas that has a very disagreeable odor, much like that of rotten eggs. It is slightly soluble in water and is soluble in carbon disulfide. Dissolved in water, it forms a very weak dibasic acid that is sometimes called... Read more

Related newspaper, magazine, and trade journal articles from HighBeam Research

Development of PVA Copolyme Capsules
Magazine article from: Pharmaceutical Technology Europe ...bioavailability of some insoluble drugs is...conventional hard capsules cannot tolerate...investigates a PVA copolymer, which has...material in capsule formulations. Hard capsules have been...alcohol (PVA) acrylic...that the bioavailability of some ...

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