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Rhodamine B

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Rhodamine B Basic information

Product Name:
Rhodamine B
Synonyms:
  • Rhodamine B, ≥99.0%(HPLC)
  • RHODAMINE BRHODAMINE BRHODAMINE B
  • 9-(2-carboxyphenyl)-3,6-bis(diethylamino)xanthylium chloride
  • [9-(O-CARBOXYPHENYL)-6-(DIETHYLAMINO)-3H-XANTHEN-3-YLIDENE] DIETHYL-AMMONIUM CHLORIDE
  • (9-(O-CARBOXYPHENYL)-6-(DIETHYL-AMINO)-3H-XANTHENE-3-YLIDENE)DIETHYL AMMONIUM CHLORIDE
  • ACID RHODAMINE B
  • LABOTEST-BB LT00772274
  • BRILLIANT RHODAMINE B
CAS:
81-88-9
MF:
C28H31ClN2O3
MW:
479.01
EINECS:
201-383-9
Product Categories:
  • Analytical Chemistry
  • Ion Association
  • Steroids, Terpenes, Lipids, Bile acidsDerivatization Reagents
  • TLC Reagents, N-R
  • TLC ReagentsDerivatization Reagents TLC
  • Derivatization Reagents TLC
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  • TLC Visualization Reagents (by application)
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  • Dyes and Pigments
Mol File:
81-88-9.mol
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Rhodamine B Chemical Properties

Melting point:
210-211 (dec.)(lit.)
Density 
0.79 g/mL at 20 °C
refractive index 
1.6500 (estimate)
Flash point:
12 °C
storage temp. 
Store at RT.
solubility 
H2O: soluble1mg/mL
form 
Solid
Colour Index 
45170
color 
Green
PH
3-4 (10g/l, H2O, 20℃)
Water Solubility 
SOLUBLE
Merck 
14,8183
BRN 
4119648
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
81-88-9(CAS DataBase Reference)
IARC
3 (Vol. 16, Sup 7) 1987
NIST Chemistry Reference
Rhodamine b(81-88-9)
EPA Substance Registry System
Rhodamine B (81-88-9)
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Safety Information

Hazard Codes 
Xn,Xi,F
Risk Statements 
22-41-68-67-36-11-40-20/21/22-52/53
Safety Statements 
7-16-24/25-26-36/37/39-39-36-22
RIDADR 
UN 3077 9/PG 3
WGK Germany 
3
RTECS 
BP3675000
TSCA 
Yes
HS Code 
32041300
Hazardous Substances Data
81-88-9(Hazardous Substances Data)
Toxicity
LD50 i.v. in rats: 89.5 mg/kg (Webb)

MSDS

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Rhodamine B Usage And Synthesis

Chemical Properties

red/brown or green crystals

Chemical Properties

C.I. Food red 15 is a green crystalline or redviolet powdered solid

Uses

A useful fluorochrome for histology, FRET and mitochondrial probe.

Uses

As 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.

Definition

ChEBI: 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 Description

Green crystals or reddish-violet powder. Used as a dye, especially for paper, as a metal chelating reagent, and in drugs and cosmetics.

Air & Water Reactions

Very soluble in water. Solution is bluish-red. Dilute solutions are strongly fluorescent.

Reactivity Profile

Acidic 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.

Hazard

Questionable carcinogen.

Potential Exposure

It 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

Shipping

UN3143 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 Methods

Major 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.]

Incompatibilities

Dust 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

Rhodamine B Preparation Products And Raw materials

Preparation Products

Raw materials

Rhodamine BSupplier

Shanghai Aladdin Bio-Chem Technology Co.,LTD Gold
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J & K SCIENTIFIC LTD.
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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Alfa Aesar
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400-610-6006; 021-67582000
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