L-Histidine (CAS 71-00-1) is an essential amino acid with an imidazole side chain that appears as a white crystalline powder with mild sweetness and is used in infant formulas, pharmaceutical production, and biochemical research, where it supports histamine synthesis and acts as a metal chelator.
Typical Properties
| Molecular formula | C6H9N3O2 |
|---|---|
| Molecular weight | 155.15 g/mol |
| Appearance | White crystalline powder |
| Form | powder |
| Color | White to off-white or pale yellow |
| Odor | odorless |
| Melting point | 287 °C (decomp) |
| Density | 1.309 g/cm³ |
| Water solubility | 41.6 g/L (25 °C) |
| pH | 7.0-8.0 (25°C, 0.1M in H2O) |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 29332990 |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
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L-Histidine
Applications
Used in infant formulas, pharmaceuticals, and biochemical research. It supports histamine synthesis and acts as a metal chelator.
Safety & Risks
Non-toxic and hygroscopic; store in moisture-controlled conditions.
Packaging
Delivered in 25 kg paper bags or drums. Store cool, dry, and sealed.