Solvent Red 43 CAS 15086-94-9 2′, 4′, 5′, 7′-Tetrabromofluorescein

• CAS No.: 15086-94-9
• Formula: C20h8br4o5
• EINECS: 239-138-3
• Appearance: Powder
• Classification: S
• Certification: CCIC
• Model NO.: SUREST-90
• Purity: 90%~99%
• Type: Sodium Hydrosulfide
• Grade Standard: Industrial Grade
• Shelf Life: 2 Years
• Stock: Available
• Color: Orange to Red
• Molecular Weight: 647.89
• Transport Package: 25kg or 200 Kg/Barrel
• Specification: 98%min
• Trademark: Surest
• Origin: China
• HS Code: 3204199000
• Production Capacity: 1000 Tons Yearly

Product Description

Solvent Red 43
 

Name	Solvent Red 43
Synonyms	2',4',5',7'-Tetrabromofluorescein; 3,6-Dihydroxy-2,4,5,7-tetrabromospiro(xanthene-9,3'-phthalide); 2',4',5',7'-Tetrabromo-3',6'-dihydroxyspiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one
Molecular Structure
Molecular Formula	C20H8Br4O5
Molecular Weight	647.89
CAS Registry Number	15086-94-9
EINECS	239-138-3

 
 

Chemical Property/Description

Orange to red powder , soluble in water, slightly soluble in ethanol.

Solvent Red 43, also known as red dye solvent Red 43, is a red dye commonly used in the dye and pigment industry. Its absorption wavelength is usually in the UV-visible region In general, the absorption peak of solvent red 43 is mainly concentrated in the visible spectrum, roughly in the wavelength range of 500 to 550 nm. This range indicates the strongest absorption region of the dye in the spectrum. Such color absorption ranges are usually shown as red or orange-red, however, note that the exact absorption wavelength may vary depending on factors such as the solvent, solution concentration, environmental conditions, and the accuracy of the experimental measurement equipment.

Main Uses:


Solvent Red 43 is  a dye molecule. Eosin Y has been widely used as photoredox catalyst in organic synthesis due to its low cost and good availability.


Biological stain, peptide and protein, protoplasm, alkaline phosphatase, etc. Photometric determination of silver (submicrogram). A component of Wright stain used to identify blood cells. Adsorption indicator, titrating  iodine, plasma.