L(+)-Histidine 99.0-101.0% (by perchloric acid titration), EMPROVE® EXPERT Ph. Eur., USP, JP, SAFC®
Supplier: MilliporeSigma
Certificates
About this item
CAS Number:71-00-1
:
Formula:C₆H₉N₃O₂
MDL Number:MFCD00064315
:155.16 g/mol
Melting Pt:272...273 °C Dec.
Density:0.43 g/cm³
Storage Temperature:Ambient
EINECS:200-745-3
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Specification Test Results
- Assay (Acidimetric, Calculated on Dried Substance):98.5 - 101.0%
- Assay (Perchloric Acid Titration, Calculated on Dried Substance):99.0 - 101.0%
- Identity (IR-spectrum):Passes Test
- Appearance:White to Almost White Fine-Crystalline Powder or Colorless Crystals
- Appearance of Solution (50 g/l; Water):Clear and not More Intense in Color than Reference Solution BY₇
- Appearance of Solution (20 g/l, Water):Clear and Colorless
- Specific Rotation (α 20/D, 110 g/l, Hydrochloric Acid 120 g/l, Calculated on Dried Substance):+11.4 to +12.4
- Specific Rotation (α 25/D, 110 g/l, Hydrochloric Acid 6 mol/l, Calculated on Dried Substance):+12.6 to +14.0
- Specific Rotation (α 20/D, 110 g/l, Hydrochloric Acid 6 mol/l, Calculated on Dried Substance):+11.8 to +12.8°
- pH (20 g/l, CO₂-Free Water):7.0 - 8.5
- Chloride (Cl):≤200 ppm
- Sulfate (SO₄):≤200 ppm
- Heavy Metals (as Pb):≤10 ppm
- Cu (Copper):≤25 ppm
- Fe (Iron):≤10 ppm
- Fe (Iron) (ICP):≤10 ppm
- Mn (Manganese):≤25 ppm
- Zn (Zinc):≤130 ppm
- Related Compounds, total (TLC):≤0.5%
- Related Substances (TLC):Passes Test
- Ninhydrin-Positive Substances (LC) (Any Ninhydrin-Positive Impurity):≤0.2%
- Ninhydrin-Positive Substances (LC) (Ammonium (570 nm)):≤0.02%
- Ninhydrin-Positive Substances (LC) (Total Impurities):≤0.5%
- Residual Solvents (ICH (Q3C)):Excluded by Manufacturing Process
- Sulfated ash (600 °C):≤0.1%
- Loss on Drying (105 °C; 3 h):≤0.2%
- Bacterial Endotoxins:<2.0
- Microbiological Test (Total Aerobic Microbial Count (TAMC)):≤10²
- Microbiological Test (Total Yeast and Mould Count (TYMC)):≤10²