L-HISTIDINE MONOHYDROCHLORIDE MONOHYDRATE Property

Melting point:

254 °C (dec.)(lit.)

solubility 

H₂O: 100 mg/mL

CAS DataBase Reference

7048-02-4(CAS DataBase Reference)

Safety

Safety Statements 

22-24/25

WGK Germany 

3

RTECS 

MS3119000

F 

10

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

L-HISTIDINE MONOHYDROCHLORIDE MONOHYDRATE Chemical Properties,Usage,Production

Uses

L-Histidine Hydrochloride Monohydrate can be used as AhR activators to treat gluten-induced gastrointestinal diseases. It can also be used for hair coloring method.

Purification Methods

Crystallise the monohydrochloride from aqueous EtOH or 60% aqueous EtOH (m 259odec). Alternatively dissolve 10g in 50mL of H2O, decolourise with Norite, filter, evaporate it in a vacuum to a syrup, cool to room temperature, add 95% EtOH with stirring until slightly turbid, scratch the sides of the vessel until crystals form, then add slowly 40mL of EtOH and keep at 0o overnight, filter the solid off, wash it several times with EtOH and dry it in a vacuum. [Cox J Biol Chem 78 475 1929, Cox et al. J Biol Chem 81 73 1929, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 1972, 2098 1961, Beilstein 25 II 407, 25 III/IV 4346.]