Aspartic Acid for biochemistry

ürün Kodu : 100126.0100

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Ürün Grubu : Merck Kimyasalları

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Description
Catalogue Number 100126
Synonyms L-a-Aminosuccinic acid, L-αlpha-Aminosuccinic acid, Asp, L-α-Aminosuccinic acid
Product Information
CAS number 56-84-8
EC number 200-291-6
Hill Formula C₄H₇NO₄
Molar Mass 133.1 g/mol
HS Code 2922 49 85
Structure formula Image Structure formula Image
Quality Level MQ100
Applications
Application L-Aspartic acid for biochemistry. CAS 56-84-8, pH 2.5 - 3.5 (4 g/l, H₂O, 20 °C).
Physicochemical Information
Melting Point 269 - 271 °C (decomposition)
pH value 2.5 - 3.5 (4 g/l, H₂O, 20 °C)
Bulk density 430 kg/m3
Solubility 4 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 (alkalimetric, calculated on dried substance) 99.0 - 101.5 %
Identity (IR-spectrum) passes test
Appearance white to almost white crystalline powder or colorless crystals
Appearance of solution (50 g/l; hydrochloric acid 1 mol/l) clear and not more intense in color than reference solution BY₆
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 6 mol/l, calc. on dried substance) +24.0 to +26.0
Chloride (Cl) ≤ 200 ppm
Sulfate (SO₄) ≤ 300 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)(impurity C (glutamic acid)) ≤ 0.2 %
Ninhydrin-positive substances (LC)(impurity D (alanine)) ≤ 0.2 %
Ninhydrin-positive substances (LC)(impurity G (asparagine)) ≤ 0.2 %
Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity) ≤ 0.10 %
Ninhydrin-positive substances (LC) (total impurities) ≤ 1.0 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)) ≤ 0.02 %
Loss on drying (105 °C; 3 h) ≤ 0.5 %

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