Calcium sulfate definition

For general use in the drying of ethereal extracts, one of us previously recommended shaking with saturated sodium chloride solution and filtering through a cone of anhydrous sodium sulfate which see), but he is now convinced by the literature cited and from personal trials that calcium sulfate is definitely superior. In one informative experiment, ether was saturated with water at 25° and a ItlO-ml. 

Substances that are ordinarily deliquescent are sulfuric add (concentrated), glycerol, calcium chloride crystals, sodium hydroxide (solid), and 100% ethyl alcohol. In an enclosed space, these substances deplete the water vapor present to a definite degree. Other substances are used to accomplish this end by chemical reaction, e.g.. phosphorus pentoxide (forming phosphoric acid), and boron trioxide (forming boric acid). Water is absorbed from nonmiscible liquids by addition of such substances as anhydrous sodium sulfate, potassium carbonate, anhydrous calcium chloride. and solid sodium hydroxide. The converse phenomenon is known as efflorescence. 

Calcium and sulfate showed a definite tendency to be higher in concentration during periods of low rainfall, presumably because of dry fallout. Calcium concentrations were commonly less than 1 mg/liter and sulfate less than 2 mg/liter during periods of high rainfall. 

Definition Calcium salt of carrageenan mixt. of highly sulfated polygalactosides, extracted from seaweed... 

Synonyms Mannitan, Z-9-octadecenoate Definition Monoester of oleic acid and anhydrides derived from mannitol Empirical C24H440g Uses Emulsifier, surfactant in cosmetics Manuf/Distrib. Somerset Cosmetic Co. Variati D-Mannitol, 1,4-anhydro-, 6-dodecanoate. See Mannitan laurate D-Mannitol, dianhydro-, mono-9-octadecenoate, (Z)- D-Mannitol, dianhydro-, monooleate. See Mannide monooleate MAOH. See Methyl amyl alcohol Marble. See Calcium carbonate Mascagnite. See Ammonium sulfate Matting acid. See Sulfuric acid Maxatase. See Protease MC. See Methylcellulose MCC. See Microcrystalline cellulose... 

Sodium calcium polyphosphate, glassy. See Sodium calcium polyphosphate Sodium C8-10 alcohols sulfate. See Sodium C8-10 alkyl sulfate Sodium C9-14 alcohols sulfate. See Sodium C9-14 alkyl sulfate Sodium C12-15 alcohols sulfate. See Sodium C12-15 alkyl sulfate Sodium C12-18 alcohols sulfate. See Sodium C12-18 alkyl sulfate Sodium C16-20 alcohols sulfate. See Sodium C16-20 alkyl sulfate Sodium C14-17 alcohol sulfonate Sodium C14-17 sec alcohol sulfonate. See Sodium C14-17 alkyl sec sulfonate Sodium C13-17 alkane sulfonate CAS 93763-92-9 EiNECS/ELiNCS 297-913-1 Synonyms Suifonic acids, C13-17-aikane, sodium sails Definition Sodium sail of a suifonated aikane with 13-17 carbons in aikyi chain Ionic Nature Anionic... 

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