融點  :320 °C(lit.)
沸點  :429.44°C (rough estimate)
比重(密度)  :1.2739 (rough estimate)
屈折率  :1.5000 (estimate)
貯蔵溫度  :room temp
溶解性 :Solubility Insoluble in water, ether, benzene, chloroform; soluble in ethanol, methanol, acetone, Iethyl acetate, N,N-dimethylformamide
カラーインデックス  :45350
外見  :Powder
酸解離定數(Pka) :2.2, 4.4, 6.7(at 25℃)
色 :Red to orange
酸塩基指示薬変色域(pH) :Pink uorescence (4.0) to green uorescence (6.0)
水溶解度  :insoluble
極大吸収波長 (λmax) :493.5nm, 496nm, 460nm, 515nm
ε（減衰係數） :≥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)
安定性： :Stable. Combustible. Incompatible with strong oxidizing agents.
主な用途 :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
生物學的応用 :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
化粧品成分の機能 :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 データベース :2321-07-5(CAS DataBase Reference)
EPAの化學物質情報 :Fluorescein (2321-07-5)

絵表示(GHS):
注意喚起語:	Warning
危険有害性情報:	コード 危険有害性情報 危険有害性クラス 區(qū)分 注意喚起語 シンボル P コード H319 強い眼刺激 眼に対する重篤な損傷性/眼刺激 性 2A 警告 P264, P280, P305+P351+P338,P337+P313P
注意書き:	P305+P351+P338 眼に入った場合：水で數分間注意深く洗うこと。次にコ ンタクトレンズを著用していて容易に外せる場合は外す こと。その後も洗浄を続けること。