Name: MERCK L-Histidin Monohidroklorit Monohidrat 100 gr
SKU: 10465
Availability: InStock

MERCK L-Histidin Monohidroklorit Monohidrat 100 gr

8.062,00 ₺

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Empirical Formula (Hill Notation): C₆H₉N₃O₂ · HCl · H₂O

CAS Number: 5934-29-2

Molecular Weight: 209.63

Beilstein: 4168261

UNSPSC Code: 12352209

EC Index Number: 211-438-9

NACRES: NA.21

Applications
Application	L-Histidine monohydrochloride monohydrate for biochemistry. CAS 5934-29-2, pH 3.5 – 4.5 (100 g/l, H₂O, 20 °C).

Physicochemical Information
Density	1.4723 g/cm3 (20 °C)
Melting Point	256 – 268 °C (decomposition)
pH value	4.38 – 4.48 (149.55 g/l, H₂O, 20 °C)
Vapor pressure	<0.1 hPa (20 °C)
Bulk density	770 kg/m3
Solubility	149.55 g/l

Safety Information according to GHS
RTECS	MS3119000
Storage class	10 – 13 Other liquids and solids
WGK	WGK 1 slightly hazardous to water
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Storage and Shipping Information
Storage	Store below +30°C.

Specifications
Assay (calculated on dried substance)	99.0 – 101.0 %
Identity (IR-spectrum)	passes test
Identity (wet chemistry)	passes test
Appearance	white to almost white crystalline powder or colorless crystals
Appearance of solution (50 g/l CO₂-free water)	clear and not more intense in color than reference solution BY₆
Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance)	+9.2 to +10.6
Sulfate (SO₄)	≤ 200 ppm
Heavy metals (as Pb)	≤ 10 ppm
As (Arsenic)	≤ 5 ppm
Ca (Calcium)	≤ 10 ppm
Co (Cobalt)	≤ 5 ppm
Fe (Iron)	≤ 5 ppm
K (Potassium)	≤ 5 ppm
Mg (Magnesium)	≤ 5 ppm
Na (Sodium)	≤ 50 ppm
Zn (Zinc)	≤ 5 ppm
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 %
Loss on drying (150 °C)	7.0 – 10.0 %

MERCK L-Histidin Monohidroklorit Monohidrat 100 gr

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