alpha-Naphtholbenzein

Product Code.	Quantity	unitSize
11493157	25 g	25g
11483157	5 g	5g
11403167	100 g	100g

Product Code. 11493157

Brand: Thermo Scientific Alfa Aesar A16125.14

Description

CAS: 145-50-6 | C27H18O2 | 374.439 g/mol

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.

Specifications

Chemical Identifiers

• CAS: 145-50-6
• Molecular Formula: C27H18O2
• Molecular Weight (g/mol): 374.439
• MDL Number: MFCD00078492
• InChI Key: VDDWRTZCUJCDJM-PNHLSOANSA-N
• PubChem CID: 5941340
• IUPAC Name: (4Z)-4-[(4-hydroxynaphthalen-1-yl)-phenylmethylidene]naphthalen-1-one
• SMILES: C1=CC=C(C=C1)C(=C2C=CC(=O)C3=CC=CC=C23)C4=CC=C(C5=CC=CC=C54)O

• Melting Point: ∼225°C (decomposition)
• Quantity: 25 g
• Beilstein: 3471575
• Synonym: p-naphtholbenzein, 1-naphtholbenzein, alpha-naphtholbenzein, .alpha.-naphtholbenzein, 4-4-hydroxynaphthyl phenylmethylene naphthalen-1-one, naphtholbenzein, 1 4h-naphthalenone, 4-4-hydroxy-1-naphthalenyl phenylmethylene, 1 4h-naphthalenone,4-4-hydroxy-1-naphthalenyl phenylmethylene, 1 4h-naphthalenone, 4-.alpha.-4-hydroxy-1-naphthyl benzylidene
• Solubility Information: Soluble in ethanol,acetic acid and acetone. Insoluble in water.
• Formula Weight: 374.44
• Chemical Name or Material: alpha-Naphtholbenzein

Safety and Handling

Product Identifier

• alpha-Naphtholbenzein

Signal Word

• Warning

Hazard Category

• Serious eye damage/eye irritation Category 2
• Skin corrosion/irritation Category 2
• Specific target organ toxicity Category 3

Hazard Statement

• H315-Causes skin irritation.
• H319-Causes serious eye irritation.
• H335-May cause respiratory irritation.

Precautionary Statement

• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P302+P352-IF ON SKIN: Wash with plenty of water/soap.
• P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P312-Call a POISON CENTER/doctor/if you feel unwell.

Supplemental information

• MIXTURE LIST-Contains : alpha-Naphtholbenzein

SDS

RUO – Research Use Only