RHODAMINE B HYDRAZIDE Chemical Properties

Melting point:

176-177 °C

Boiling point:

643.3±65.0 °C(Predicted)

Density 

1.27±0.1 g/cm3(Predicted)

solubility 

DMF: 30 mg/ml; DMF:PBS(pH7.2) (1:2): 0.33 mg/ml; DMSO: 20 mg/ml; Ethanol: 0.1 mg/ml

form 

A crystalline solid

pka

6.44±0.20(Predicted)

color 

Off-white to yellow

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-37/38-41

Safety Statements 

26-36

WGK Germany 

3

HS Code 

32049010

MSDS

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RHODAMINE B HYDRAZIDE Usage And Synthesis

Uses

Rhodamine B hydrazide is a good probe for sulfite, with colorless and non-fluorescent properties. While the emission is related to the concentration of sulfite (5-800 ng/mL; detection limit=1.4 ng/mL (3σ)). Sulfite reduces dissolved oxygen to yield superoxide radicals, which binds to Rhodamine B hydrazide to form Rhodamine B. Rhodamine B hydrazide gives Rhodamine B-like fluorescence in the presence of sulfite, which is enhanced by Tween 80 surfactant micelles. Rhodamine B hydrazide has an absorption maximum at 554 nm and a fluorescence emission maximum at 574 nm[1].

References

[1] Yang X F, et al. Novel spectrofluorimetric method for the determination of sulfite with rhodamine B hydrazide in a micellar medium[J]. Analytica Chimica Acta, 2002, 456(1): 121-128.

RHODAMINE B HYDRAZIDE(74317-53-6)Related Product Information

• 2-(2-aminoethyl) Rhodamine B amide
• Octanoic hydrazide
• CI 45010
• RHODAMINE B HYDRAZIDE