Fluorescein suppliers

Properties

Melting point:：

320 °C(lit.)

Boiling point:：

429.44°C (rough estimate)

Density ：

1.2739 (rough estimate)

refractive index ：

1.5000 (estimate)

storage temp. ：

room temp

solubility ：

Solubility Insoluble in water, ether, benzene, chloroform; soluble in ethanol, methanol, acetone, Iethyl acetate, N,N-dimethylformamide

Colour Index ：

45350

form ：

Powder

pka：

2.2, 4.4, 6.7(at 25℃)

color ：

Red to orange

PH Range：

Pink uorescence (4.0) to green uorescence (6.0)

Water Solubility ：

insoluble

λmax：

493.5nm, 496nm, 460nm, 515nm

ε(extinction coefficient)：

≥12000 at 282-286nm
≥39000 at 236-240nm
≥70000 at 488-492nm

Merck ：

14,4159

BRN ：

94324

Henry's Law Constant：

1.1×10¹¹ mol/(m³Pa) at 25℃, HSDB (2015)

Stability:：

Stable. Combustible. Incompatible with strong oxidizing agents.

Major Application：

Organic light-emitting diode, nanoparticles, liquid crystal display, oil products, lip make-up, nucleic acid synthesis, amplification, sequencing and cloning, diagnosis of diabetic retinopathy, detecting yeast, multidrug resistance, proteins, antiHCV antibodies, target genes, enzymatic activity, nerve agent, nucleic acid sequences, imaging lung cancer, prostate cancer

Biological Applications：

Detecting chromosomal aberration; diagnosing corneal diseases; marking/detecting insects; as antitumor agent; as antihistaminic agent; use in agriculture and plant cultivation; use in cosmetics; use in ophthalmology; as a substrate for measuring α-amylases activity, elastases activity, esterases activity, β-glucuronidases activity, horseradish peroxidases activity, kinases activity, monoamine oxidases (MAOs) activity, phosphatases activity, phospholipases activity, proteases/proteinases activity, telomerases activity activity

Cosmetics Ingredients Functions：

HAIR DYEING
COLORANT

InChI：

1S/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H

InChIKey：

GNBHRKFJIUUOQI-UHFFFAOYSA-N

SMILES：

Oc1ccc2c(Oc3cc(O)ccc3C24OC(=O)c5ccccc45)c1

LogP：

2.980 (est)

CAS DataBase Reference：

2321-07-5(CAS DataBase Reference)

EPA Substance Registry System：

Fluorescein (2321-07-5)

SecurityInformation

Symbol(GHS) ：

GHS07

Signal word ：

Warning

Hazard statements ：

H319

Precautionary statements ：

P305+P351+P338

PPE：

Eyeshields, Gloves, type N95 (US)

Hazard Codes ：

Xi

Risk Statements ：

43-36-36/37/38

Safety Statements ：

22-24/25-37/39-26-36/37/39-27

WGK Germany ：

3

RTECS ：

LM5075000

F ：

10-21

TSCA ：

TSCA listed

HS Code ：

32042000

Storage Class：

11 - Combustible Solids

Hazard Classifications：

Eye Irrit. 2

Hazardous Substances Data：

2321-07-5(Hazardous Substances Data)

REACH Registrations：

Active