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Rhodamine B

Rhodamine B Structure
CAS No.
81-88-9
Chemical Name:
Rhodamine B
Synonyms
RHODAMINE;BASIC VIOLET 10;RHODAMIN B;Rhodamine B, ≥99.0%(HPLC);[9-(O-CARBOXYPHENYL)-6-(DIETHYLAMINO)-3H-XANTHEN-3-YLIDENE] DIETHYL-AMMONIUM CHLORIDE;Basic Rhodamine;Rhodamine B Extra;RHODAMINE B CHLORIDE;2-[6-(DIETHYLAMINO)-3-(DIETHYLIMINO)-3H-XANTHEN-9-YL]BENZOIC ACID;Ammonium, [9-(o-carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]diethyl-, chloride
CBNumber:
CB7485569
Molecular Formula:
C28H31ClN2O3
Molecular Weight:
479.01
MOL File:
81-88-9.mol
MSDS File:
SDS
Modify Date:
2024/5/29 14:19:23

Rhodamine B 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. room temp
solubility H2O: soluble1mg/mL
Colour Index 45170
form Solid
color Green
PH 3-4 (10g/l, H2O, 20℃)
Water Solubility SOLUBLE
Merck 14,8183
BRN 4119648
Stability Stable. Incompatible with strong oxidizing agents.
LogP 1.9-2
CAS DataBase Reference 81-88-9(CAS DataBase Reference)
NIST Chemistry Reference Rhodamine b(81-88-9)
IARC 3 (Vol. 16, Sup 7) 1987
EPA Substance Registry System Rhodamine B (81-88-9)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS02,GHS07
Signal word  Danger
Hazard statements  H225-H319-H336
Precautionary statements  P210-P305+P351+P338
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
WGK Germany  3
RTECS  BP3675000
TSCA  Yes
HS Code  32041300
Toxicity LD50 i.v. in rats: 89.5 mg/kg (Webb)
NFPA 704
1
3 0

Rhodamine B price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) R6626 Rhodamine B ≥95% (HPLC) 81-88-9 25G ₹3090 2022-06-14 Buy
Sigma-Aldrich(India) R6626 Rhodamine B ≥95% (HPLC) 81-88-9 100G ₹3220 2022-06-14 Buy
Sigma-Aldrich(India) R6626 Rhodamine B ≥95% (HPLC) 81-88-9 500G ₹12830 2022-06-14 Buy
Sigma-Aldrich(India) 83689 Rhodamine B for fluorescence 81-88-9 1G ₹6648.9 2022-06-14 Buy
Sigma-Aldrich(India) 79754 Rhodamine B analytical standard 81-88-9 25MG ₹13453.2 2022-06-14 Buy
Product number Packaging Price Buy
R6626 25G ₹3090 Buy
R6626 100G ₹3220 Buy
R6626 500G ₹12830 Buy
83689 1G ₹6648.9 Buy
79754 25MG ₹13453.2 Buy

Rhodamine B Chemical Properties,Uses,Production

Chemical Properties

red/brown or green crystals

Uses

Rhodamine B is used in biological studies for an anti-reactive oxygen species/hepatic fibrosis drug delivery system based on salvianolic acid B loaded mesoporous silica nanoparticles. Dyes and metabolites, Environmental Testing.

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

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Related Qustion

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