L-Glutamic Acid

                                   

	
L-Glutamic acid is mainly used for the production of monosodium glutamate, flavorings, as well as being used as a substitute for salt, a nutritional supplement, and a biochemical reagent, etc. L-glutamic acid itself can be used as a drug, participating in the metabolism of proteins and sugars in the brain, promoting the oxidation process. This substance combines with ammonia in the body to form the non-toxic glutamine, reducing blood ammonia and alleviating symptoms of hepatic coma. It is mainly used to treat hepatic coma and severe liver dysfunction, but the therapeutic effect is not very satisfactory. When used in combination with antiepileptic drugs, it can also treat petit mal seizures and psychomotor seizures. The racemic L-glutamic acid is used for the production of drugs and also as a biochemical reagent, etc.


 

【Common Name】L-Glutamic Acid   【Molecular Formula】C5H9NO4  【Molecular Weight】147.13

【Physical and Chemical Properties】White crystalline powder, almost odorless, with a special taste and sourness. It decomposes at 224°C to 225°C. The pH value of the saturated aqueous solution is approximately 3.2. It is insoluble in water, practically insoluble in ethanol and ether, and极易 soluble in formic acid.

【Storage Conditions】Store in a sealed, cool and dry place.

 

Technical Indicators:


	

		

			

			
Inspection items
			
			

			
Enterprise standards
			
			

			
Inspection items
			
			

			
Enterprise standards
			
		
		

			

			
Appearance
			
			

			
White crystalline powder
			
			

			
Heavy Metal(On a Pb basis)
			
			

			
≤10ppm
			
		
		

			

			
Purity W/%
			
			

			
≥99-100.5
			
			

			
Arsenic (on an AS basis)
			
			

			
≤1ppm
			
		
		

			

			
Specific rotation
			
			

			
+31.5°~+32.5°
			
			

			
Dry weight loss W/%
			
			

			
≤0.1
			
		
		

			

			
Translucent
			
			

			
≥98%
			
			

			
Ash residue W/%
			
			

			
≤0.1
			
		
		

			

			
Chloride
			
			

			
≤200ppm
			
			

			
pH
			
			

			
3.0-3.5
			
		
		

			

			
Sulfate
			
			

			
≤200ppm
			
			

			
Ammonium salt
			
			

			
≤200ppm
			
		
		

			

			
Iron salt
			
			

			
≤10ppm