L(+)-Histidine 98%

Supplier: THERMO FISHER SCIENTIFIC CHEMICALS

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ThermoScintific Chemicals

ThermoScintific Chemicals

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TS16615-0250EA 44 USD

TS16615-0250 TS16615-1000 TS16615-5000

L(+)-Histidine 98%

L(+)-Histidine

Formula: C₆H₉N₃O₂
Melting Pt: 282 °C (dec.)
Storage Temperature: Ambient

MDL Number: MFCD00064315
CAS Number: 71-00-1
EINECS: 200-745-3
Merck Index: 13,04741

https://qa.digitalassets.avantorsciences.com/adaptivemedia/rendition?id=badfdb36aac0611e5823a7d05e6cba944f6650fa&vid=badfdb36aac0611e5823a7d05e6cba944f6650fa&prid=web&clid=SAPDAM

Specification Test Results

Appearance	White Crystalline powder or crystals
Infrared spectrum	Conforms
Loss on drying	≤0.2 % (105°C, 3 h)
Sulfated ash	≤0.1 %
UV transmittance	≥98 % (c=5, H2O, 430 nm) 1 cm cell
pH	7.0 to 8.5 (2 % in water)
Specific optical rotation	+12.0° to +14.0° (20°C, 589 nm) (c=11, 6 N HCl) (on dry substance)
Titration with HClO4	97.5 to 102.5 % (On dry substance)
Chloride (Cl)	≤200 ppm
Sulfate (SO4)	≤200 ppm
Ammonium (NH4)	≤200 ppm
Iron (Fe)	≤10 ppm
Heavy metals (as Pb)	≤10 ppm

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