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L-Histidine HCL

CAS No.: 1007-42-7
Molecular formular: C6H10CIN3O2
Molecular weight: 191.62
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Product description
Parameters

L-Histidine HCL

AJI92

EP6

Assay

99.0-101.0

98.5-101.0%

PH

3.5-4.5

3.0-5.0

Specific rotation[a]D20

+8.9°-+9.5°

+9.2°-+10.6°

Specific rotation[a]D25

/

/

Transmittance(T430)

≥98.0%

/

Chloride(Cl)

16.66-17.08%

/

Ammonium(NH4)

≤0.02%

≤0.02%

Sulfate(SO4)

≤0.02%

≤0.03%

Iron(Fe)

≤10PPM

≤10PPM

Heavy metals(Pb)

≤10PPM

≤10PPM

Arsenic

≤1PPM

/

Other amino acids

conform

/

Ninhydrin-positive substances

/

conform

Loss on drying

≤0.20%

7.0-10.0%

Residue on ignition

≤0.10%

≤0.10%

 

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