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Postion:Product Catalog >Biochemical Engineering>Biochemical Reagents>Biological Dyes>Fluorescein
Fluorescein
  • Fluorescein

Fluorescein NEW

Price $50 $1
Package 1KG 1000KG
Min. Order: 1KG
Update Time: 2026-07-03

Product Details

Product Name: Fluorescein CAS No.: 2321-07-5
Min. Order: 1KG Purity: 99%
Supply Ability: g-kg-tons, free sample is available Release date: 2026/07/03
Lead time: In stock Packaging: bottle/drum/bucket/IBC, as request.
Delivery: By sea, by air, by express Origin: Manufacturer

1. Product information

Product Name:Fluorescein
Synonyms:FLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACID;Diresorcinolphthalein;Tetraoxyphthalophenone anhydride;SOLVENT YELLOW 94;S NO 880;RESORCINOL PHTHALEIN;FLUORESCEIN, ALCOHOL SOLUBLE;FLUORESCEIN
CAS:2321-07-5
MF:C20H12O5
MW:332.31
EINECS:219-031-8
Product Categories:Fluorescent;Xanthene;Aromatics;Fluorescent Labels & Indicators;Heterocycles;FUNDUSCEIN;E-FFluorescent Probes, Labels, Particles and Stains;Fluorescein and Derivatives;Fluorescent Labels;Stains and Dyes;Stains&Dyes, A to;Intermediates & Fine Chemicals;Pharmaceuticals
Mol File:2321-07-5.mol
Article illustration

Fluorescein Chemical 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
pka2.2, 4.4, 6.7(at 25℃)
Colour Index 45350
form Powder
color Red to orange
PH RangePink uorescence (4.0) to green uorescence (6.0)
Water Solubility insoluble
λmax493.5nm, 496nm, 460nm, 515nm
Merck 14,4159
BRN 94324
Stability:Stable. Combustible. Incompatible with strong oxidizing agents.
Major ApplicationOrganic 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 ApplicationsDetecting 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


2. Packaging

For powders: normal is 25kgs/Drum or bag, or larger/smaller package as request.

For liquids: normal 25kgs/drum, 180-300kgs/bucket, or IBC, determined by the nature of the product. 

                     Or smaller package 1kg/bottle, 10kgs/bottle as request. 

Article illustrationArticle illustration

3. Shipping

Article illustration


4. Contact information

For more details, pls contact us freely.

Email address : elin@fdachem.com

Mob: 86 13613820652 

WhatsApp/Skype/Wechat/LINE: 86 13613820652

Article illustration


Company Profile Introduction

Henan Fengda Chemical Co., Ltd. a research customization and supplier specializing in PPb grade ultra-high purity electronic chemicals, deeply rooted in the semiconductor and new display fields, committed to providing the most core and purest chemical components for photoresist and high-end display materials. We provide key monomers for KrF/ArF photoresist, photoacid generators (PAGs), photoacids, and etching solution raw materials, providing cornerstone materials for advanced process photoresist formulations; We take ICP-MS full spectrum metal impurity analysis as the quality cornerstone and provide ICP-MS metal impurity COA reports to meet the strict industry requirements for PPb grade electronic chemical materials. The COA report contains important data such as NA, Mg, K, Ca, Al, Cr, Fe, Ni, Cu, Zn, Pb, Ag, etc. To provide customers with pure and reliable source assurance for cutting-edge research and stable production.

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