Ninhydrin, Spectrophotometric Grade
Supplier: Thermo Scientific
ACRO165871000EA
145
EUR
ACRO165871000
ACRO165870250
ACRO165875000
Ninhydrin, Spectrophotometric Grade
Ninhydrin
Specification Test Results
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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