Monosodium glutamate

Physical and chemical indicators:
Parameter: Specification/Result
The content of the main substance,%: ≥99.0, 99.5
Particle size: mesh, 60-120 mesh
Transmittance, %: ≥98.0, 99.2
Specific rotation: +24.9°~ +25.3°, 25.0°
Loss on drying,%: ≤0.5, 0.1
pH value: 6.7-7.5, 7.0
Iron, mg/kg: ≤5 ppm, <5
Sulphate, %: ≤0.05, <0.05
Chloride, %: ≤0.1, <0.1
Arsenic, mg/kg: ≤0.05PPM, absent
Lead, mg/kg: ≤1PPM, absent