Erythrosine

Description

Erythrosine · CAS 16423-68-0 · C20H8I4O5. UNII 1A878FZQ9B. Melting Point: 303 °C; Solubility: 0.7 mg/mL.

Identification

CAS Registry Number	16423-68-0
PubChem CID	3259
Molecular formula	C20H8I4O5
IUPAC name	3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one
UNII (FDA)	1A878FZQ9B

Computed Descriptors

Molecular Weight	835.9
XLogP3	6
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	0
Exact Mass	835.6551
Monoisotopic Mass	835.6551
Topological Polar Surface Area	76
Heavy Atom Count	29
Formal Charge	0

Physical & Chemical Properties

Melting Point	303 °C
Solubility	0.7 mg/mL

Physical description & handling notes

• Liquid; Other Solid
• Red powder or granules.
• Solid
• 217.9 Ų [M-H]- [CCS Type: DT; Buffer gas: N2; Ionization: ESI-; Dataset: TOXCAST; Source Identifier: DTXSID7021233]
• 211.3 Ų [M+H]+ [CCS Type: DT; Buffer gas: N2; Ionization: ESI+; Dataset: TOXCAST; Source Identifier: DTXSID7044843]
• 211.7 Ų [M+H]+ [CCS Type: DT; Buffer gas: N2; Ionization: APCI+; Dataset: TOXCAST; Source Identifier: DTXSID7021233]

Regulatory Status

Regulatory & Food Contact	COLOUR: Food Additives CI FOOD RED 14 JECFA ADI: 0-0.1 mg/kg bw The Committee concluded that the new data that have become available since the previous evaluation of erythros ">TRS 1014-JECFA 86/27 FAS 77 JECFA 86/49
GHS notification summary	94.9% (37 / 39)

GHS Hazard Classification

GHS notification summary	94.9% (37 / 39)

Documented Uses

• Food Additives -> COLOUR -> JECFA Functional Classes
• Cosmetics -> Hair dyeing; Cosmetic colorant
• Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-2',4',5',7'-tetraiodo-: ACTIVE
• Chemicals that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.

Synonyms

ERYTHROSINE; E127; 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one; FD & C red no. 3; 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro(2-benzofuran-3,9'-xanthene)-1-one; FDC Red No. 3; RefChem:591122; Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-2',4',5',7'-tetraiodo-, disodium salt; 16423-68-0; Erythrosine, sodium anhydrous; NSC-36685; Erythrosin B; Tetraiodofluorescein; 15905-32-5; Solvent Red 140; Iodeosin

Frequently Asked Questions

What are the CAS number and molecular formula of Erythrosine?

CAS 16423-68-0; molecular formula C20H8I4O5; molecular weight — g/mol.

What other names is Erythrosine known by?

ERYTHROSINE, E127, 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one, FD & C red no. 3, 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro(2-benzofuran-3,9'-xanthene)-1-one, FDC Red No. 3.

What is the regulatory status of Erythrosine?

Documented regulatory listings: COLOUR: Food Additives; CI FOOD RED 14; JECFA ADI: 0-0.1 mg/kg bw.

Is Erythrosine classified as hazardous?

94.9% of GHS notifications report no hazard classification (37 of 39).

What are the key physical properties of Erythrosine?

Melting Point: 303 °C; Solubility: 0.7 mg/mL.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.