l-glutamic acid 56-86-0

payment method: t/t
product name: h-glu-oh cas#: 56-86-0
synonyms: l-glutamic acid molecular formula: c5h9no4
molecular weight: 147.13

specifications: (reference standard: aji92)
item
standard

appearance
white crystals or crystalline powder

specific rotation[α]20/d
(c=10 in 2n hcl)
+31.5 to +32.2°

chloride (cl)
not more than 0.020%

ammonium (nh4)
not more than 0.02%

sulfate (so4)
not more than 0.020%

iron (fe)
not more than 10ppm

heavy metal(pb)
not more than 10ppm

arsenic(as2o3)
not more than 1ppm

other amino acids
chromatographically
not detectable

loss on drying
not more than 0.10%

residue on ignition(sulfated)
not more than 0.10%

assay
99.0% to 100.5%

ph
3.0 to 3.5

56-86-0