α-Naphtholphthalein, pure indicator
Supplier: Thermo Scientific
190120050
190120010
190120250
ACRO190120050EA
281
GBP
ACRO190120050
ACRO190120010
ACRO190120250
α-Naphtholphthalein, pure indicator
α-Naphtholphthalein
Formula:
C₂₈H₁₈O₄ Melting Pt: 240…250 °C Storage Temperature: Ambient |
MDL Number:
MFCD00036202 CAS Number: 596-01-0 EINECS: 209-875-5 |
Specification Test Results
Appearance | Beige to pink to brown Powder |
Infrared spectrum | Conforms |
Loss on drying | ≤5 % (110°C, 1 h) |
UV Lambda max | 648 to 654 nm (in 0.1N NaOH) |
Specific absorbance A (1%/1cm) | ≥550 (at lamda max) |
Visual transition interval | from pH 7.3 (pink-yellow) to pH 8.7 (green-blue) |
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