RHODAMINE B HYDRAZIDE

RHODAMINE B HYDRAZIDE Property

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

InChI

InChI=1S/C28H32N4O2/c1-5-30(6-2)19-13-15-23-25(17-19)34-26-18-20(31(7-3)8-4)14-16-24(26)28(23)22-12-10-9-11-21(22)27(33)32(28)29/h9-18H,5-8,29H2,1-4H3

InChIKey

WTDHTIVYKKLOTC-UHFFFAOYSA-N

SMILES

C12(C3=C(C=C(N(CC)CC)C=C3)OC3=C1C=CC(N(CC)CC)=C3)C1=C(C=CC=C1)C(=O)N2N

Safety

Hazard Codes 

Xn

Risk Statements 

22-37/38-41

Safety Statements 

26-36

WGK Germany 

3

HS Code 

32049010

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H318Causes serious eye damage

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P501Dispose of contents/container to..…

RHODAMINE B HYDRAZIDE Chemical Properties,Usage,Production

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.