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A16125 alpha-Naphtholbenzein

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

Stock No. Size Price ($) Quantity Availability
A16125-06 5g 31.20
A16125-14 25g 97.00
A16125-22 100g 315.00
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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.
Storage & Sensitivity
Ambient temperatures.
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-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Beilstein
3471575
Harmonized Tariff Code
2914.50
TSCA
Yes

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