MERCK 104350.0025 Histidine Monohydrochloride Monohydrate For Biochemistry 25G

MERCK 104350.0025 Histidine Monohydrochloride Monohydrate For Biochemistry 25G

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MERCK , Kimyasallar
Marka
MERCK
Stok Kodu
LK.MRCK.1043500025
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Ürün Bilgisi
Ürün Bilgisi
Description
Catalogue Number 104350
Synonyms His
Product Information
CAS number 5934-29-2
EC number 211-438-9
Hill Formula C₆H₁₀ClN₃O₂ * H₂O
Molar Mass 209.63 g/mol
HS Code 2933 29 90
Structure formula Image Structure formula Image
Quality Level MQ100
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
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Statement(s) H319: Causes serious eye irritation.
Precautionary Statement(s) P264: Wash skin thoroughly after handling.
P280: Wear eye protection/ face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P337 + P313: If eye irritation persists: Get medical advice/ attention.
Signal Word Warning
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 %
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MERCK 104350.0025 Histidine Monohydrochloride Monohydrate For Biochemistry 25G LK.MRCK.1043500025
MERCK 104350.0025 Histidine Monohydrochloride Monohydrate For Biochemistry 25G

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