USD $8.80-8.80 / Gram
USD $6.00-9.00 / Gram
USD $8.80-8.80 / Gram
USD $6.00-9.00 / Gram
USD $2.00-10.00 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
USD $10.00-100.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
check item | standard regulations | check results | |
characteristics | off-white to slightly yellowish crystalline powder | conforms | |
ultraviolet absorption | absorptivity between 385 to 409 | 390 | |
identification |
chemical reaction | conforms to the requirement | conforms |
liquid chromatography | conforms to the requirement | conforms | |
infrared absorption | conforms to the requirement | conforms | |
chloride | conforms to the requirement | conforms | |
clarity and colour of solution | conforms to the requirement | conforms | |
acidity | ph value,between 4.0 and 6.0 | 4.6 | |
related substances | not more than 1.0% | 0.2% | |
moisture | 3.0~4.0% | 3.6% | |
residue on ignition | not more than 0.2% | 0.06% | |
heavy metal | not more than 0.001% | conform | |
residual solvent | conforms to the requirement | conform | |
assay | 98.0%~102.0% calculated on the anhydrous substance basis | 99.5% |