L-aspartic acid is an organic compound with chemical formula CfourHsevenNOfour。White crystal or crystalline powder, slightly sour in taste.Soluble in boiling water, slightly soluble in water (0.5%) at 25 ℃, easily soluble in dilute acid and sodium hydroxide solution, insoluble in ethanol, ether, heated to 270 ℃ for decomposition, isoelectric point 2.77, and its specific rotation is related to the dissolved solvent.It is right-handed in acid solution, left-handed in alkali solution, and right-handed in water solution.
It is white crystal or crystalline powder with slightly sour taste.Soluble in boiling water, slightly soluble in water (0.5%) at 25 ℃, easily soluble in dilute acid and sodium hydroxide solution, insoluble in ethanol, ether, heated to 270 ℃ for decomposition, isoelectric point 2.77, and its specific rotation is related to the dissolved solvent.It is dextral in acid solution, left-handed in alkali solution and dextral in water solution[1]。
melting point
>300°C (dec.)(lit.)
Specific rotation
25 º (c=8, 6N HCl)
Storage conditions
Store at RT.
solubility
HtwoO: 5mg/mL
form
powder
Water solubility
5 g/L (25 ºC)
Merck
14,840
BRN
one million seven hundred and twenty-three thousand five hundred and thirty
stability
Stable. Combustible. Incompatible with strong oxidising agents.
Product use
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1、 It is used as electrolyte supplement for amino acid infusion, potassium, calcium and other inorganic ion supplements, fatigue recovery agent, etc.Potassium magnesium aspartateInjection or oral liquid, used for cardiac glycoside poisoningArrhythmiaAnd premature beatsTachycardia, hypokalemia, hypomagnesemiaheart failure、miocardial infarction, angina pectoris, hepatitis, cirrhosis and other diseases.It is low toxic, and this product cannot be injected without dilution,Renal insufficiencyAndAtrioventricular blockUse with caution.
2、 It can be used as ammonia antidote, liver function promoter, fatigue recovery agent and other pharmaceuticals, and can be used as food additive of sodium L-aspartate and various cool beverage additives. It can also be used asBiochemical reagent, culture media and organic synthesis intermediates.
3、 It is used as a synthetic sweetener, medically to treat heart disease, liver function promoter, ammonia antidote, fatigue eliminator, amino acid infusion ingredient, etc.
4、 Nutritional supplements and flavor enhancers.Add to various cool drinks.In medicine, it is used as ammonia antidote, liver function promoter and fatigue recovery agent.
5、 Used for biochemical research, fatigue recovery agent, ammonia antidoteclinical diagnosisDrugs.
Production method
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The preparation methods of L-aspartic acid include synthesis and fermentation.1. The synthesis method mainly uses maleic acid or fumaric acid or their esters as raw materials, which are treated with ammonia under pressure, and then hydrolyzed.It is easy to synthesize racemic aspartic acid, but so far there is no ideal method for the resolution of racemate.2. Fermentation method The product can be obtained with high yield by adding fumaric acid and ammonia under the action of enzyme.This method is the main method for industrial production because it can only produce levorosomes with high yield.
security information
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Dangerous goods mark:Xi,Xn
Hazard category code:36-36/37/38-20/21/22
Safety instructions:26-24/25-22-36
Customs code:twenty-nine million two hundred and twenty-four thousand nine hundred and ninety-five
