南通东部氨基酸有限公司

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DL-Histidine HCl CAS:351-50-8

Item	Limit
Description	White to light yellow crystal or crystalline powder
Heavy metals (Pb)	10ppmMax
Choride	15.26% ~ 15.73%
Arsenic	2ppmMax
Loss on Drying	0.2%Max
Residue in Ignition	0.2%Max
Assay	98.0~~101.0%