Chemodex

α-Naphtholbenzein

Name: α-Naphtholbenzein
Brand: Chemodex
SKU: CDX-N0116
Price: 81.00 CHF
Availability: InStock

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CDX-N0116-G01010 gCHF 81.00

CDX-N0116-G05050 gCHF 244.00

Specifications / Handling

More Information
Product Details
Synonyms	4,4'-(α-Hydroxybenzylidene)di-1-naphthol; p-Naphtholbenzein; NSC 9862
Product Type	Chemical
Properties
Formula	C₂₇H₁₈O₂
MW	374.43
CAS	145-50-6
Source/Host Chemicals	Synthetic
Appearance	Dark red powder.
Solubility	Soluble in ethanol or methanol. Insoluble in water.
Identity	Determined by ¹H-NMR.
Declaration	Manufactured by Chemodex.
Other Product Data	Click here for Original Manufacturer Product Datasheet Our product description may differ slightly from the original manufacturers product datasheet.
InChi Key	VDDWRTZCUJCDJM-PNHLSOANSA-N
Smiles	OC1=CC=C(/C(C2=CC=CC=C2)=C3C=CC(C4=C/3C=CC=C4)=O)C5=C1C=CC=C5
Shipping and Handling
Shipping	AMBIENT
Short Term Storage	+20°C
Long Term Storage	+20°C
Handling Advice	Protect from light and moisture.
Use/Stability	Stable for at least 2 years after receipt when stored at RT.
Documents
Product Specification Sheet
Datasheet	Download PDF

Scientific Background Information

Product Description

α-Naphtholbenzein is a dye generally used as an acid-base indicated. The pH-indicator has a visual transition from yellow (pH0-8.2) to turquoise (pH10). It is often used during sequential injection analysis technique done for acid-base titrations. It also has been used for food storage, determining bacterial growth in packed food, detecting viable cells and detecting enzymes.

Product-specific References

(1) T. Higuchi, et al.; Anal. Chem. 28, 1120 (1956) | (2) M. Silla, et al.; Talanta 52.1, 91 (2000)

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