Ninhydrin, Spectrophotometric Grade

Supplier: Thermo Scientific
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Synonyms: Ninhydrin monohydrate, Trioxohydrindene monohydrate, 2,2-Dihydroxyindane-1,3-dione, 2,2-Dihydroxy-1,3-indanedione, Indanetrione hydrate, 2,2-Dihydroxyindan-1,3-dion, 1,2,3-Indantrione monohydrate

165870250 165871000 165875000
ACRO165870250EA 94.1 GBP
ACRO165870250 ACRO165871000 ACRO165875000
Ninhydrin, Spectrophotometric Grade
Ninhydrin
Formula: C₉H₆O₄
MW: 178,14 g/mol
Boiling Pt: 351 °C (1013 hPa)
Melting Pt: 250 °C (dec.)
Density: 0,862 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00003791
CAS Number: 485-47-2
EINECS: 207-618-1
Merck Index: 13,06582
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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 ≤0.5 % (Total)

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