alpha-Naphtholphthalein, Thermo Scientific Chemicals

Description

Indicator in 0.1% or 0.04% alcohol solution

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.

Specifications

Chemical Identifiers

• CAS: 596-01-0
• Molecular Formula: C28H18O4
• Molecular Weight (g/mol): 418.448
• MDL Number: MFCD00036202
• InChI Key: HQHBAGKIEAOSNM-UHFFFAOYSA-N
• Synonym: alpha-naphtholphthalein, naphtholphthalein, 1-naphtholphthalein, a-naphtholphthalein, 3,3-bis 4-hydroxynaphthalen-1-yl isobenzofuran-1 3h-one, unii-2qeg1706nn, 1 3h-isobenzofuranone, 3,3-bis 4-hydroxy-1-naphthalenyl, naphtholphthalein blue, alpha-naphtholphtalein, 3,3-bis 4-hydroxy-1-naphthyl phthalide
• PubChem CID: 68993
• IUPAC Name: 3,3-bis(4-hydroxynaphthalen-1-yl)-2-benzofuran-1-one
• SMILES: C1=CC=C2C(=C1)C(=CC=C2O)C3(C4=CC=CC=C4C(=O)O3)C5=CC=C(C6=CC=CC=C65)O

• Melting Point: 238°C to 240°C
• Color: Brown
• Quantity: 1 g
• Merck Index: 14,6389
• Solubility Information: Soluble in ethanol. Insoluble in water.
• Formula Weight: 418.45
• Physical Form: Powder
• Chemical Name or Material: alpha-Naphtholphthalein

RUO – Research Use Only