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 Products:monosodium glutamate 谷氨酸钠

 Specification
Specification of monosodium glutamate
谷氨酸钠
   Item
Limit
Appearance
 White or colorless  crystal
Assay
99.0% to 100%
state of solution
(transmittance)
Clear and colorless not less than 98.0%
 
chloride (cl)
Not more than 0.039%
Ammonium(NH4)
Not more than0.02%
Sulfate(so4)
not more than 0.028%
Iron (Fe)
Not more than 5PPM
Heavy metals (pb)
Not more than 10PPM
Arsenic (ASO3)
Not more than 0.5PPM
Other amino acids
Conforms
Loss on drying
Not more than 0.30%
specific rotation (a)20
+24.8 +25.3
PH
6.77.2
 
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