Rhodamine B CAS:81-88-9

  • Product Name:Rhodamine B
  • CAS:81-88-9
  • Molecular formula:C28H31ClN2O3
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Rhodamine B CAS:81-88-9

Rhodamine B CAS:81-88-9 Basic information

Product Name: Rhodamine B
Synonyms: CALCOZINE RHODAMINE BX;TETRAETHYLRHODAMINE;RHODAMIN B;RHODAMINE;RHODAMINE B, O;RHODAMINE B (OR O);RHODAMINE BX;RHODAMINE B500
CAS: 81-88-9
MF: C28H31ClN2O3
MW: 479.01
EINECS: 201-383-9
Product Categories: Dyes and Pigments;Organics;Analytical Chemistry;Ion Association;Steroids, Terpenes, Lipids, Bile acidsDerivatization Reagents;TLC Reagents, N-R;TLC ReagentsDerivatization Reagents TLC;Derivatization Reagents TLC;TLC Visualization Reagents (
Mol File: 81-88-9.mol

Rhodamine B CAS:81-88-9 Chemical Properties

density: 0.79 g/mL at 20 °C
Melting point: 210-211 (dec.)(lit.)
form: Solid
storage temp.: Store at RT.
Water Solubility: SOLUBLE
refractive index: 1.6500 (estimate)
BRN: 4119648
Fp: 12 °C
solubility: H2O: soluble1mg/mL
NIST Chemistry Reference: Rhodamine b(81-88-9)
Merck: 14,8183
Stability: Stable. Incompatible with strong oxidizing agents.
Colour Index: 45170
CAS DataBase Reference: 81-88-9(CAS DataBase Reference)
EPA Substance Registry System: Rhodamine B (81-88-9)


Dyestuff’s Name: BASIC VIOLET 10

 


ITEMS

RESULTS

APPEARANCE

GREEN POWDER

STRENGTH

100%

SHADE

SIMILAR TO STANDARD

MOISTURE

3.85%

INSOLUBLE

0.81%

FINENESS

(80μm)

14%

SOLUBILITY

5g/l

PH

2.9

Conclusion

Qualified

Rhodamine B Usage And Synthesis
Chemical Propertiesred/brown or green crystals
Chemical PropertiesC.I. Food red 15 is a green crystalline or redviolet powdered solid
UsesA useful fluorochrome for histology, FRET and mitochondrial probe.
UsesAs a dye, especially for paper; as a reagent for antimony, bismuth, cobalt, niobium, gold, manganese, mercury, molybdenum, tantalum, thallium, tungsten; as biological stain. Provisionally listed for use in drugs and cosmetics.
DefinitionChEBI: An organic chloride salt having N-[9-(2-carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-N-ethylethanaminium as the counterion. An amphoteric dye commonly used as a fluorochrome.
General DescriptionGreen crystals or reddish-violet powder. Used as a dye, especially for paper, as a metal chelating reagent, and in drugs and cosmetics.
Air & Water ReactionsVery soluble in water. Solution is bluish-red. Dilute solutions are strongly fluorescent.
Reactivity ProfileAcidic organic/inorganic salts, such as Rhodamine B, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
HazardQuestionable carcinogen.
Potential ExposureIt is used as a color additive in drugs, foods, cosmetics, and fabric dyes. It is also used as a tracing agent in water pollution studies. May be used as an agricultural chemical
ShippingUN3143 Dyes, solid, toxic, n.o.s. or Dye intermediates, solid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
Purification MethodsMajor impurities are partially dealkylated compounds not removed by recrystallisation.Purify the dye by chromatography, using ethyl acetate/isopropanol/ammonia (conc)(9:7:4, RF 0.75 on Kieselgel G). It has also been crystallised from a concentrated solution in MeOH by slow addition of dry diethyl ether; or from EtOH containing a drop of conc HCl by slow addition of ten volumes of dry diethyl ether. The solid is washed with ether and air dried. The dried material has also been extracted with *benzene to remove oil-soluble material prior to recrystallisation. Store it in the dark. [Beilstein 18 II 486, 18 III/IV 8246, 19/8 V 669.]
IncompatibilitiesDust may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, strong reducing agents


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