我司提供D-絲氨酸 產(chǎn)品質(zhì)量好,價格合理,歡迎來電咨詢。
Items
Standard
Appearance
white crystals or crystalline powder
Specific Rotation
(C=10,2N HCl)
-14.0o to -16.0o
Assay
98.0%-101.0%
Loss on drying
Not more than0.5%
Residue on Ignition
Not more than0.20%
Heavy Metals(Pb)
Not more than10ppm
PH
5.2-6.2
Chloride ( Cl)
Not more than0.02%
Sulfate (SO4)
Iron( Fe)
Arsenic
Not more than 2ppm
Ammonium(NH4)
Not more than 0.02%
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