L-Histidine HCl Mono
  　 Chemical Name: (S)-2-Amino-1H-imidazole-4-propionic acid monohydrochloride monohydrate
N3O2.HCL.H2O
Molecular Weight: 209.63
Cas No: [5934-29-2]
Characteristics: White crystals or crystalline powder; slightly acid and bitter taste. Freely soluble in water.
Quality Standards: AJI92.		  
 

Item

Limit

Description

White crystals or crystalline powder

Identification

Infrared absorption spectrum

Specific rotation[a]D20 °

+8.9 ° - +9.5 °

State of solution (Transmittance)

≥ 98.0%

PH

3.5 ～ 4.5

Chloride(Cl)

16.66-17.08%

Ammonium(NH4)

≤ 0.02%

Sulfate(SO4)

≤ 0.020%

Iron(Fe)

≤ 10PPm

Heavy metals(Pb)

≤ 10PPm

Arsenic(As2O3)

≤ 1PPm

Other amino acid

Conforms

Loss on drying

≤ 0.20%

Residue on ignition (Sulfated)

≤ 0.10%

Assay

99.0-101.0%

Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature.
Recommended limit:1 year.