Rhodamine B: Difference between revisions
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Basic Violet 10; CI 45170; tetraethylrhodamine; D&C Red No. 19, Solvent Red 49; Pigment Violet 1 (phosphotungstomolybdic acid | Basic Violet 10; CI 45170; tetraethylrhodamine; D&C Red No. 19, Solvent Red 49; Pigment Violet 1 (phosphotungstomolybdic acid salt); Pigment Red 173 (aluminum salt); Rhodamine (Deut.); Rodamina B (Esp.); rodamina B (Port.); rhodamine B (Fr.) | ||
== Comparisons == | == Comparisons == | ||
Rhodamine B variations with some properties and descriptions | |||
{| class="wikitable" | |||
|- | |||
! Other names | |||
! Laked form | |||
! Comments | |||
|- | |||
| Rhodamine 610; Basic Violet 10 | |||
| | |||
| identification by fluorescence microscopy and laser dyes; used as pH indicator and water tracer | |||
|- | |||
| D&C Red #19 | |||
| | |||
| formerly used in drugs and cosmetics but was removed from list in 1984 as a suspected carcinogen | |||
|- | |||
| Solvent red 49 | |||
| | |||
| fluorescent red dye used in wood stains and coating, printing inks and leather finishes. | |||
|- | |||
| Pigment Violet 1 | |||
| phosphotungstomolybdic acid salt | |||
| introduced in 1924; bright reddish-violet with high color strength and good lightfastness; used in printing inks, textile printing, and, in some cases, plastics due to its high gloss and vivid shade | |||
|- | |||
| Pigment Red 173; Rhodamine Red; Cosmetic Rubine | |||
| aluminum salt | |||
| brilliant pink to magenta used in inks, powder coatings, industrial paints, colored glass and plastics; Extensively used in cosmetic products | |||
|} | |||
<!--{| class="wikitable" | <!--{| class="wikitable" | ||
! Pigment number !! Manufacture !! Pigment name !! Manufacture CI number !! Comments | ! Pigment number !! Manufacture !! Pigment name !! Manufacture CI number !! Comments | ||
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|- | |- | ||
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[[[SliderGallery rightalign|PV001 sun rhodamine b 221-0035.TIF~FTIR 221-0035(MFA)|PV1 rhodamine b (magruder mm0107-dc).TIF~FTIR mm0107-dc(MFA)|Pv1 rhodamine B (magruder mm0122-dc).TIF~FTIR mm0122-dc(MFA)|Pv1 rhodamine B (magruder mm1219-dc).TIF~FTIR mm1219-dc(MFA)|Rhodamine (Forbes MFA 44) copy.tif~Raman (MFA)|f44sem.jpg~SEM|f44edsbw.jpg~EDS|rhodamine b.jpg~Chemical structure]]] | |||
== Risks == | == Risks == | ||
* | * Listed as carcinogen and mutagen. | ||
* | * Harmful if swallowed | ||
* Can cause eye damage and allergic reactions in skin | |||
* Store in glass containers as it is absorbed by plastics | |||
* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AAA1357218&productDescription=RHODAMINE+B+50G&vendorId=VN00024248&countryCode=US&language=en SDS] | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AAA1357218&productDescription=RHODAMINE+B+50G&vendorId=VN00024248&countryCode=US&language=en SDS] | ||
==Physical and Chemical Properties== | ==Physical and Chemical Properties== | ||
* Soluble in water, alcohols, and polar solvents. | |||
* Soluble in water, | * Decomposes in chlorinated solutions. | ||
* Maximum absorption wavelength = 545 nm. | * Maximum absorption wavelength = 545 nm. | ||
* Maximum emission wavelength = 625 nm. | * Maximum emission wavelength = 625 nm. | ||
| Line 53: | Line 80: | ||
* Aldrich Chemical Catalog Comment: p. 1299 | * Aldrich Chemical Catalog Comment: p. 1299 | ||
* Colour Index International online at www.colour-index.org | * Colour Index International online at www.colour-index.org | ||
* CHSOS: [https://chsopensource.org/products/pigments-checker/pigments-checker-modern-and-contemporary-art-pigments-list/pr-173-rhodamine-b-2/ Spectra (XRF, Raman, Reflectance on PR 173] | * CHSOS: [https://chsopensource.org/products/pigments-checker/pigments-checker-modern-and-contemporary-art-pigments-list/pr-173-rhodamine-b-2/ Spectra (XRF, Raman, Reflectance) on PR 173] | ||
* Wikipedia: [https://en.wikipedia.org/wiki/Rhodamine_B Rhodamine B] Accessed Dec. 2025 | * Wikipedia: [https://en.wikipedia.org/wiki/Rhodamine_B Rhodamine B] Accessed Dec. 2025 | ||
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 14:56, 18 April 2026
Description
A strong, bright red fluorescent dye. Rhodamine B is a basic dye that was developed in 1887 by Ceresole. It is used as textile and paper dye, as a pigment, and as a staining reagent for the detection of fats and oils. Some oil modified materials such as alkyds and urethanes will also stain with rhodamine (Wolbers et al 1990). Rhodamine B has been used as a fluorescent colorant in inks (ballpoint, printing), wood stains, distemper paints, colored glass, plastics, and shoe polish.
Synonyms and Related Terms
Basic Violet 10; CI 45170; tetraethylrhodamine; D&C Red No. 19, Solvent Red 49; Pigment Violet 1 (phosphotungstomolybdic acid salt); Pigment Red 173 (aluminum salt); Rhodamine (Deut.); Rodamina B (Esp.); rodamina B (Port.); rhodamine B (Fr.)
Comparisons
Rhodamine B variations with some properties and descriptions
| Other names | Laked form | Comments |
|---|---|---|
| Rhodamine 610; Basic Violet 10 | identification by fluorescence microscopy and laser dyes; used as pH indicator and water tracer | |
| D&C Red #19 | formerly used in drugs and cosmetics but was removed from list in 1984 as a suspected carcinogen | |
| Solvent red 49 | fluorescent red dye used in wood stains and coating, printing inks and leather finishes. | |
| Pigment Violet 1 | phosphotungstomolybdic acid salt | introduced in 1924; bright reddish-violet with high color strength and good lightfastness; used in printing inks, textile printing, and, in some cases, plastics due to its high gloss and vivid shade |
| Pigment Red 173; Rhodamine Red; Cosmetic Rubine | aluminum salt | brilliant pink to magenta used in inks, powder coatings, industrial paints, colored glass and plastics; Extensively used in cosmetic products |
Risks
- Listed as carcinogen and mutagen.
- Harmful if swallowed
- Can cause eye damage and allergic reactions in skin
- Store in glass containers as it is absorbed by plastics
- ThermoFisher: SDS
Physical and Chemical Properties
- Soluble in water, alcohols, and polar solvents.
- Decomposes in chlorinated solutions.
- Maximum absorption wavelength = 545 nm.
- Maximum emission wavelength = 625 nm.
- Composition = C28H31ClN2O3 (mol. wt. = 478.68 g/mol)
- CAS = 81-88-9
- Melting Point = 210-211 C
Resources and Citations
- A. Schaening, M. Schreiner, D. Jembrih-Simbuerger, 'Identification and Classification of Synthetic Organic Pigments of a Collection of the 19th and 20th century by FTIR' The Sixth Infrared and Raman Users Group Conference (IRUG6), Florence Italy, 2004.
- R. Wolbers, N. Sterman and C. Stavroudis, "Notes for Workshop on New Methods in the Cleaning of Paintings", 1990, GCI, Los Angeles.
- Website for absorption/fluorescent spectra: http://www.omlc.ogi.edu/spectra/PhotochemCAD/html/rhodamineB.html
- Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Monona Rossol, The Artist's Complete Health and Safety Guide, Allworth Press, New York, 1994
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8349
- Dye History: www.straw.com/sig/dyehist - discovered 1887
- Aldrich Chemical Catalog Comment: p. 1299
- Colour Index International online at www.colour-index.org
- CHSOS: Spectra (XRF, Raman, Reflectance) on PR 173
- Wikipedia: Rhodamine B Accessed Dec. 2025