USD $5.00-10.00 / Gram
USD $10.00-100.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $10.00-100.00 / Kilogram
aji92/97 standard
l-pyroglutamic acid
appearance |
off-white crystalline powder |
specific rotation[α]d20 (c=2 h2o) |
-10.5°~ -11.8° |
melting point |
158~161℃ |
chloride |
≤0.02% |
nh4 |
≤0.02% |
so4 |
≤0.05% |
heavy metals |
≤10ppm |
iron |
≤20ppm |
arsenic |
≤1ppm |
loss on drying |
≤0.5% |
residue on ignition |
≤0.2% |
assay |
98.0~101.0% |