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Thermo Scientific Chemicals
alpha-Naphtholbenzein
CAS: 145-50-6 | C27H18O2 | 374.439 g/mol
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Catalog number A16125.22
also known as A16125-22
Price (EUR)
338,30
キャンペーン価格
398,00Save 59,70 (15%)
Each
Quantity:
100 g
Price (EUR)
338,30
キャンペーン価格
398,00Save 59,70 (15%)
Each
Chemical Identifiers
CAS145-50-6
IUPAC Name(4E)-4-[(4-hydroxynaphthalen-1-yl)(phenyl)methylidene]-1,4-dihydronaphthalen-1-one
Molecular FormulaC27H18O2
InChI KeyVDDWRTZCUJCDJM-SOYKGTTHSA-N
SMILESOC1=C2C=CC=CC2=C(C=C1)C(\C1=CC=CC=C1)=C1/C=CC(=O)C2=CC=CC=C12
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Specifications
Specification Sheet
Specification SheetFormPowder
Color ChangeOrange @ pH8.2 to blue-green @ pH10.0
Specific Absorbance (E 1%/1cm)≥350
CommentSuitable for use as an indicator
lambda-max (UV-Vis)644-652nm (0.01M NaOH)
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α-Naphtholbenzein is used as a pH indicator. (pH 0.0-0.8/ pH 8.2-10.0).
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Applications
α-Naphtholbenzein is used as a pH indicator. (pH 0.0-0.8/ pH 8.2-10.0).
Solubility
Soluble in ethanol, acetic acid and acetone. Insoluble in water.
Notes
Incompatible with strong oxidizing agents, acids, water reactive substances, azo, diazo, hydrazines, metals, nitrides, peroxides, hydroperoxides, epoxides and reducing agents.
α-Naphtholbenzein is used as a pH indicator. (pH 0.0-0.8/ pH 8.2-10.0).
Solubility
Soluble in ethanol, acetic acid and acetone. Insoluble in water.
Notes
Incompatible with strong oxidizing agents, acids, water reactive substances, azo, diazo, hydrazines, metals, nitrides, peroxides, hydroperoxides, epoxides and reducing agents.
RUO – Research Use Only
General References:
- Acid-base indicator: pH 0.0 - 0.8; 8.2 - 10.0.
- Wang, J.; Xu, C.; Song, Q. Rapid and Environmentally Friendly Three-Dimensional-Printed Flow Injection Analysis System for the Determination of the Acid Number in Thermal Conductive Oil. Energy Fuels 2015, 29 (2), 1040-1044.
- Özçeşmeci, M. Synthesis, photophysical and photochemical properties of metal-free and zinc(II) phthalocyanines bearing alpha-naphtholbenzein units. J. Organomet. Chem. 2014, 767, 16-21.