548-26-5

Basic information

• Product Name: Acid Red 87
• Synonyms: 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3h-xanthen-9-yl)-benzoicacidisodium;bromofluoresceicacid;bromox-100;eosinelakeredy;eosinesaltfree;fenazoeosinexg;tetrabromofluoresceinsoluble;EOSIN WATER AND ALCOHOL SOLUBLE
• CAS NO: 548-26-5
• Molecular Formula: C₂₀H₆Br₄O₅*2Na
• Molecular Weight: 647.89
• EINECS: 241-409-6
• Product Categories: Organics;Stains and Dyes
• Mol File: 548-26-5.mol

Chemical Properties

• Appearance: /
• Storage Temp.: Amber Vial, -20°C Freezer, Under inert atmosphere
• Solubility: Methanol (Slightly), Water (Slightly)
• Water Solubility: freely soluble
• Stability: Hygroscopic
• CAS DataBase Reference: Acid Red 87(CAS DataBase Reference)
• NIST Chemistry Reference: Acid Red 87(548-26-5)
• EPA Substance Registry System: Acid Red 87(548-26-5)

Safety Data

• Hazard Codes: F,T,Xn,Xi:
• Statements: 68-36
• Safety Statements: 36/37-26
• Hazardous Substances Data: 548-26-5(Hazardous Substances Data)

Usage

Uses

Used in Textile Industry:
Acid Red 87 is used as a dye for silk, cotton, and wool due to its ability to impart a vibrant red color to these natural fibers. Its affinity for these materials and its water solubility make it an effective coloring agent in the textile industry.
Used in Ink Industry:
Acid Red 87 is used as a pigment in red writing inks, providing a consistent and long-lasting color that is resistant to fading and water damage. Its stability and color intensity make it an ideal choice for ink formulations.
Used in Cosmetic Industry:
Acid Red 87 is used as a colorant in cosmetic products, such as lipsticks and blushes, to provide a rich and long-lasting red hue. Its compatibility with various cosmetic formulations and its ability to resist fading make it a popular choice in the cosmetic industry.
Used in Biological Staining:
Acid Red 87 is used as a biological stain for staining cells and tissues in research and diagnostic applications. Its ability to bind with cellular components and its distinct red color allow for clear visualization and identification of specific structures within the sample.
Used in Motor Fuel Industry:
Acid Red 87 is used for coloring motor fuel, providing a visually appealing and easily identifiable color for the product. Its solubility and stability in the fuel make it a suitable choice for this application.

Hazard

Questionable carcinogen.

InChI:InChI=1/C20H8Br4O5.3Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;;/h1-6,25H,(H,27,28);;;/q;3*+1/p-2

Upstream product

• 518-45-6 fluorescein free acid 
• 56-40-6 glycine 
• 56-41-7 L-alanin 
• 63-91-2 L-phenylalanine 
• 71-00-1 L-histidine 

Downstream Products

• 26799-78-0 Eosin ethyl ester 
• 21514-87-4 Eosin ethyl ester monosodium salt 
• 15086-94-9 eosin y 

Relevant articles and documents

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A Kinetic Study on the Electrochemical Bromination of Fluorescein to Eosin in a Batch Reactor

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