• Name

  ERYTHROSIN B

• EINECS 240-046-0
• CAS No. 15905-32-5
• Article Data17
• CAS DataBase
• Density 2.93 g/cm³
• Solubility spirit: soluble
• Melting Point 303 °C (dec.)(lit.)
• Formula C20H8 I4 O5
• Boiling Point 628.3 °C at 760 mmHg
• Molecular Weight 835.899
• Flash Point 333.8 °C
• Transport Information
• Appearance powder
• Safety 22-24/25
• Risk Codes
• Molecular Structure
• Hazard Symbols
• Synonyms Fluorescein,2',4',5',7'-tetraiodo- (8CI); 2',4',5',7'-Tetraiodofluorescein;3',6'-Dihydroxy-2',4',5',7'-tetraiodospiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one;C.I. 45430:2; C.I. Solvent Red 140; Erythrosin J; Erythrosine J; Erythrosineacid; Iodeosin; NSC 328781; Solvent Red 140; Tetraiodofluorescein
• PSA 75.99000
• LogP 6.08420

Synthetic route

2321-07-5

fluorescein

A

56254-06-9

2',4',5'-triiodofluorescein

B

15905-32-5

erythrosine B

Conditions

Conditions	Yield
With Oxone; sodium iodide at 200℃; for 12h;	A 70% B 30%

64-17-5

ethanol

2321-07-5

fluorescein

15905-32-5

erythrosine B

Conditions

Conditions	Yield
With pyridine; iodine; silver nitrate

2321-07-5

fluorescein

15905-32-5

erythrosine B

Conditions

Conditions	Yield
With iodine Behandeln mit Eisessig;
With sodium hydroxide; iodine; acetic acid
With dihydrogen peroxide; sodium iodide In ethanol at 20℃; for 5h; Autoclave; Large scale;

Erythrosin

15905-32-5

erythrosine B

Conditions

Conditions	Yield
With oxygen Irradiation; photo-bleaching in some polymer-films: permeability of O2, glass-transition-temp., rel. index of polarity, quantum yield of bleaching, influence of O2;

75-36-5

acetyl chloride

15905-32-5

erythrosine B

77084-69-6

erythrosin B diacetate

Conditions

Conditions	Yield
With pyridine; dmap In dichloromethane for 1h;	32%

6066-82-6

1-hydroxy-pyrrolidine-2,5-dione

15905-32-5

erythrosine B

erythrosin n-hydroxysulfosuccinimide

Conditions

Conditions	Yield
dicyclohexyl-carbodiimide In DMF (N,N-dimethyl-formamide) at 4 - 20℃;

polycaprolactone diol terminated with 3,5-bis(acetylamino)-2,4,6-triiodobenzoic acid

polycaprolactone diol terminated with 3,5-bis(acetylamino)-2,4,6-triiodobenzoic acid

15905-32-5

erythrosine B

trifunctional lactate polymer with erythrosin

trifunctional lactate polymer with erythrosin

Conditions

Conditions	Yield
dicyclohexyl-carbodiimide In benzene at 0℃; for 72h;

polyethylene glycol 1000

polyethylene glycol 1000

15905-32-5

erythrosine B

polyethylene glycol; erythrosin-terminated

polyethylene glycol; erythrosin-terminated

Conditions

Conditions	Yield
With dmap; dicyclohexyl-carbodiimide In DMF (N,N-dimethyl-formamide) at 0℃; for 16h;

15905-32-5

erythrosine B

16423-68-0, 63467-67-4

2',4',5',7'-tetraiodofluorescein disodium salt

Conditions

Conditions	Yield
With sodium hydroxide In water at 20℃; for 4.5h; Autoclave; Large scale;	7.9 kg

15905-32-5

erythrosine B

5188-07-8

sodium thiomethoxide

C21H13I3O5S

Conditions

Conditions	Yield
Stage #1: erythrosine B; sodium thiomethoxide With acetic anhydride Stage #2: With tetrakis(triphenylphosphine) palladium(0) Further stages;