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CAS No.: 98-79-3
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Grade Standard: Food Grade,Medicine Grade,Tech Grade
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Specifications

Product Name: L-Pyroglutamic Acid           Cas No.: 98-79-3
supplier: premium ingredient co.,ltd
Appearance: White crystalline powder            Quality Standard: enterprise standard
 
Test item
specifications
Specific rotation
-11.0º to –12.0º
Melting point
158ºC to 161 ºC
chloride
Not more than 0.02%
Ammonium
Not more than 0.02%
Sulfate
Not more than 0.02%
Heavy metals (Pb)
Not more than 10ppm
Iron
Not more than 10ppm
Arsenic
Not more than 1ppm
Loss on drying
Not more than 0.50%
Residue on ignition
Not more than 0.1%
Assay
98.5% to 101.0%
 
Storage: Preserve in well-closed containers, and store at controlled room temperature.