Asparagıne Monohydrate For Biochemistry

ürün Kodu : 101566.0100

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Ürün Grubu : Merck Kimyasalları

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Description
Catalogue Number 101566
Synonyms Asparaginic acid semiamide, Asn
Product Information
CAS number 5794-13-8
EC number 200-735-9
Hill Formula C₄H₈N₂O₃ * H₂O
Molar Mass 150.14 g/mol
HS Code 2924 19 00
Structure formula Image Structure formula Image
Quality Level MQ100
Applications
Application L-Asparagine monohydrate for biochemistry. CAS 5794-13-8, pH 4.0 - 5.5 (20 g/l, H₂O, 20 °C).
Physicochemical Information
Melting Point 215 - 217 °C decomposes
pH value 4.0 - 5.5 (20 g/l, H₂O, 20 °C)
Bulk density 530 kg/m3
Solubility 22 g/l
Safety Information according to GHS
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 at +5°C to +30°C.
Specifications
Assay (perchloric acid titration, calculated on dried substance) 99.0 - 101.0 %
Identity (IR-spectrum) passes test
Identity (specific rotation) passes test
Appearance white to almost white crystalline powder or colorless crystals
Appearance of solution (20 g/l, CO₂-free water) clear and colorless
Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on dried substance) +33.7 to +36.0
Chloride (Cl) ≤ 200 ppm
Sulfate (SO₄) ≤ 200 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
Pb (Lead) ≤ 10 ppm
Zn (Zinc) ≤ 5 ppm
Ninhydrin-positive substances (LC)(Aspartic acid) ≤ 0.5 %
Ninhydrin-positive substances (LC) (any other ninhydrin-positive impurity) ≤ 0.3 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)) ≤ 0.02 %
Ninhydrin-positive substances (LC) (total impurities) ≤ 0.8 %
Loss on drying (130 °C, 3 h) 10.5 - 12.5 %

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