alpha-Naphtholphthalein

Name: alpha-Naphtholphthalein
SKU: 041221.14
Price: 517.00 USD

Indicator in 0.1% or 0.04% alcohol solution | CAS: 596-01-0 | C28H18O4 | 418.448 g/mol

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25 g

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Catalog number 041221.14

also known as 041221-14

Price (USD)

517.00

Each

Quantity:

25 g

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Price (USD)

517.00

Each

Chemical Identifiers

CAS596-01-0

IUPAC Name3,3-bis(4-hydroxynaphthalen-1-yl)-1,3-dihydro-2-benzofuran-1-one

Molecular FormulaC28H18O4

InChI KeyHQHBAGKIEAOSNM-UHFFFAOYSA-N

SMILESOC1=C2C=CC=CC2=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=C2C=CC=CC2=C(O)C=C1

Specifications

Specification Sheet

FormPowder

Appearance (Color)Pink to brown

Color ChangeFrom pH 7.3 ( Pinkish - yellow) to pH 8.7 ( greenish - blue)

Specific Absorbance (E 1%/1cm)> 550 (in 0.1 N NaOH, at Lambda max)

Indicator in 0.1% or 0.04% alcohol solution.α-Naphtholphthalein is used as a pH indicator and operates in the pH ranges between 7.3 and 8.7. It is also used in the designing of optical carbon dioxide sensor based on fluorescence intensity.

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.

RUO – Research Use Only