Ninhydrin, Spektralphotometrische Qualität
Lieferant: Thermo Scientific
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Achtung
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Synonyme:
2,2-Dihydroxy-1,3-indandion
, 2,2-Dihydroxy-1H-inden-1,3(2H)-dion
, Indantrionhydrat
, 2,2-Dihydroxyhydrinden-1,3-dion
, 2,2-Dihydroxy-1,3-indendion
ACRO165871000EA
142
EUR
ACRO165871000
ACRO165870250
ACRO165875000
Ninhydrin, Spektralphotometrische Qualität
Ninhydrin
Formel:
C₉H₆O₄ Molecular Weight: 178,14 g/mol Schmelzpunkt: 250 °C (Zersetzung) Lagertemperatur: Raumtemperatur |
MDL:
MFCD00003791 CAS-Nummer: 485-47-2 EINECS: 207-618-1 Merck Index: 13,06582 |
Spezifikation Testergebnisse
Appearance | White to light yellow Crystalline powder or crystals |
Infrared spectrum | Conforms |
Sulfated ash | ≤0.1 % |
pH | 4.0 to 5.6 (1 % in water) |
Suitability | (for amino acid analysis) Passes test |
Specific optical rotation | +13.5° to +15.5° (20°C, 589 nm) (c=10, 6 N HCl) (dried substance) |
Titration with HClO4 | 98.5 to 101.0 % (dried substance) |
Sulfates | ≤300 ppm |
Chlorides | ≤200 ppm |
Ammonium (NH4) | ≤200 ppm |
Iron (Fe) | ≤10 ppm |
Ninhydrin-positive substances | ≤0.10 % (Any ninhydrin-positive substance) |
Ninhydrin-positive substances | ≤0.5 % (Total) |
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