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L(+)-asparagina hydrat ≥99.0% (dry basis) for biochemistry pH 4.0 - 5.5 (20 g/l, H₂O, 20 °C), Millipore®

Dostawca: Merck

Synonim: L-Asparagine monohydrate, H-Asn-OH·H₂O, (S)-(+)-Asparagine monohydrate, (S)-2,4-Diamino-4-oxobutanoic acid hydrate, H-Asn-OH.H2O

M-Clarity™ quality level = MQ100

1.01566.0100 1.01566.1000 1.01566.9010
1.01566.0100EA 376 PLN
1.01566.0100 1.01566.1000 1.01566.9010
L(+)-asparagina hydrat ≥99.0% (dry basis) for biochemistry pH 4.0 - 5.5 (20 g/l, H₂O, 20 °C), Millipore®
L(+)-asparagina hydrat
Formuła: C₄H₈N₂O₃·1H₂O
MW: 150.13 g/mol
Temp. topnienia: 215…217 °C
Gęstość: 1.567 g/cm³ (20 °C)
Temperatura przechowywania: Temperatura otoczenia
Numer MDL: MFCD00151038
Numer CAS: 5794-13-8
Numer WE (dawny EINECS): 200-735-9
Klasyfikacja Merck : 14,00837

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Wyniki testów specyfikacyjnych

Assay (perchloric acid titration, calculated on dried substance) ≥ 99.0 %
Identity (IR-spectrum) 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) ≤ 0.02 %
Sulphate (SO₄) ≤ 0.02 %
Heavy metals (as Pb) ≤ 0.001 %
As (Arsenic) ≤ 0.0005 %
Ca (Calcium) ≤ 0.001 %
Co (Cobalt) ≤ 0.0005 %
Fe (Iron) ≤ 0.0005 %
K (Potassium) ≤ 0.0005 %
Mg (Magnesium) ≤ 0.0005 %
Na (Sodium) ≤ 0.005 %
NH4 (Ammonium) ≤ 0.01 %
Zn (Zinc) ≤ 0.0005 %
Aspartic acid ≤ 0.5 %
other foreign amino acids ≤ 0.3 %
Other ninhydrine positive substances ≤ 0.1 %
Loss on drying (130 °C, 3 h) 10.5 - 12.5 %


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