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23302-83-2 - Brooker's merocyanine dye - 1-Methyl-4-[(-4-oxycyclohexadienylidene)ethylidene]-1,4-dihydropyridine - MOED - H66517 - Alfa Aesar

H66517 Brooker's merocyanine dye

CAS Number

Size Price ($) Quantity Availability
250mg 154.50
1g 480.00
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Brooker's merocyanine dye


Chemical Properties

Formula Weight
Melting point


Brooker's merocyanine dye is used as solvent polarity indicators. It is used as pH sensors and transition metal cation indicators.


Store away from oxidizing agents. Store in a cool, dry conditions in a well sealed container.

Literature References

Viviane Cavalli; Domingas C. da Silva; Clodoaldo Machado; Vanderlei G. Machado; Valdir Soldi. The Fluorosolvatochromism of Brooker's Merocyanine in Pure and in Mixed Solvents. Journal of Fluorescence.2006, 16 77-86.

John O. Morley; Richard M. Morley; Robert Docherty and Michael H. Charlton. Fundamental Studies on Brooker's Merocyanine. J. Am. Chem. Soc.1997, 119 (42), 10192-10202.

GHS Hazard and Precautionary Statements

Hazard Statements: H302-H315-H319-H335

Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P301+P312-P312-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. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. 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.

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