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1-naphtholphthalein indicator

1-NAPHTHOLPHTHALEIN INDICATOR

Catalog No.
C005B-051004
Manufacturer No.
1062460100
Manufacturer Name
Sigma-Aldrich
Quantity
100
Unit of Measure
GR

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Analysis Note Identity (UV/VIS-Spectrum): passes test Transition range: pH 7.1 - pH 8.

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Analysis Note

Identity (UV/VIS-Spectrum): passes test
Transition range: pH 7.1 - pH 8.3pinkbrownish - blue
Absorption maximum λ 1 (buffer pH 7.1): 470 - 485 nm
Absorption maximum λ 2 (buffer pH 8.3): 649 - 654 nm
Spec. Absorptivity A 1%/1cm (λ1max; 0.01 g/l; buffer pH 7.1; calc. on anhydrous substance): 100 - 180
Spec. Absorptivity A 1%/1cm (λ2max; 0.01 g/l; buffer pH 8.3; calc. on anhydrous substance): 360 - 520
Loss on drying (110 °C): ≤ 5 %

Molecular Weight: 418.44. Empirical Formula: C28H18O4. Quality Level: 200. form: solid. loss: ≤. 5% loss on drying, 110°C. visual transition interval: 7.1-8.3, pink-brown to blue. mp: 253-255 . °C. bulk density: 350 . kg/m3. Amax: 470-485 nm (buffer pH 7.1), 649-654 nm (buffer pH 8.3). storage temp.: 2-30°C. InChI: 1S/C28H18O4/c29-25-15-13-23(17-7-1-3-9-19(17)25)28(22-12-6-5-11-21(22)27(31)32-28)24-14-16-26(30)20-10-4-2-8-18(20)24/h1-16,29-30H. InChI key: HQHBAGKIEAOSNM-UHFFFAOYSA-N. Storage Class Code: 11 - Combustible Solids. WGK: WGK 3. Flash Point(F): Not applicable. Flash Point(C): Not applicable.
UPC:
12171502
Condition:
New
HazmatClass:
No
MPN:
1062460100
CAS:
596-01-0

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