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145-50-6 - alpha-Naphtholbenzein - 4-[alpha-(4-Hydroxy-1-naphthyl)benzylidene]naphthalen-1(4H)-one - p-Naphtholbenzein - A16125 - Alfa Aesar

A16125 alpha-Naphtholbenzein

CAS Number
145-50-6
Synonyms
4-[alpha-(4-Hydroxy-1-naphthyl)benzylidene]naphthalen-1(4H)-one
p-Naphtholbenzein

Size Price ($) Quantity Availability
5g 29.56
25g 91.05
100g 298.70
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alpha-Naphtholbenzein

MDL
MFCD00078492
EINECS
205-656-3

Chemical Properties

Formula
C27H18O2
Formula Weight
374.44
Melting point
ca. 225° dec.
Solubility
Soluble in ethanol, acetic acid and acetone. Insoluble in water.

Applications

α-Naphtholbenzein is used as a pH indicator. (pH 0.0-0.8/ pH 8.2-10.0).

Notes

Incompatible with strong oxidizing agents, acids, water reactive substances, azo, diazo, hydrazines, metals, nitrides, peroxides, hydroperoxides, epoxides and reducing agents.

Literature 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.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
3471575
Harmonized Tariff Code
2907.29
TSCA
Yes

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