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Appearance:White to off-white or pale yellow powder
Throughput:100|Kilogram|Month
pd_productuse:intermediate
Delivery Time:large stock
Purity:99% purity
L-Histidine Chemical Properties
Melting point 282 °C (dec.)(lit.)
alpha 12.4 º (c=11,6N HCl)
Boiling point 278.95°C (rough estimate)
density 1.3092 (rough estimate)
FEMA 3694 | L-HISTIDINE
refractive index 13 ° (C=11, 6mol/L HCl)
storage temp. Store at RT.
solubility H2O: 50 mg/mL
form powder
pka 1.8(at 25℃)
color White to off-white or pale yellow
PH 7.0-8.0 (25℃, 0.1M in H2O)
PH Range 7 - 8 at 15.5 g/l at 25 °C
optical activity [α]20/D 39±1°, c = 2% in H2O
Water Solubility 41.6 g/L (25 ºC)
λmax λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05
JECFA Number 1431
Merck 14,4720
BRN 4673585
Stability: Stable. Incompatible with strong oxidizing agents.
InChIKey HNDVDQJCIGZPNO-YFKPBYRVSA-N
CAS DataBase Reference 71-00-1(CAS DataBase Reference)
NIST Chemistry Reference L-Histidine(71-00-1)
EPA Substance Registry System L-Histidine (71-00-1)
Safety Information
Hazard Codes Xn
Risk Statements 22-36/37/38
Safety Statements 24/25-36/37-26-22
WGK Germany 2
RTECS MS3070000
F 10-23
TSCA Yes
HS Code 29332990
Hazardous Substances Data 71-00-1(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: > 5110 mg/kg
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