2,4,5-7-四溴荧光素二钠盐

Description

2,4,5-7-Tetrabromofluorescein disodium salt · CAS 548-26-5 · C20H6Br4Na2O5. UNII TDQ283MPCW. Color Additive Status: 74.1322; Color Additive Status: 74.2322; Color Additive Status: 82.1322.

Identification

CAS Registry Number	548-26-5
PubChem CID	11048
Molecular formula	C20H6Br4Na2O5
IUPAC name	disodium;2-(2,4,5,7-tetrabromo-3-oxido-6-oxoxanthen-9-yl)benzoate
UNII (FDA)	TDQ283MPCW

Computed Descriptors

Molecular Weight	691.9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	1
Exact Mass	691.67031
Monoisotopic Mass	687.67441
Topological Polar Surface Area	89.5
Heavy Atom Count	31
Formal Charge	0
Complexity	796

Physical & Chemical Properties

Color Additive Status	74.1322
Color Additive Status	74.2322
Color Additive Status	82.1322

Physical description & handling notes

• Eosin is a red crystalline powder. (NTP, 1992)
• Red with a bluish tinge or brownish-red solid; [Merck Index]
• 572 °F (decomposes) (NTP, 1992)
• greater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
• D&C Red No. 22
• Drugs, Cosmetics

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Drugs, Cosmetics COLOUR: Food Additives CI ACID RED 87 NMRS 38/TRS 309-JECFA 8/22 CI PIGMENT RED 90 EOMINE Y
GHS notification summary	7% (47 / 671)

GHS Hazard Classification

GHS notification summary	7% (47 / 671)
Reported hazard statements	H319 (87%), H341 (50%)

Documented Uses

• Pulp and Paper Processing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Food Additives -> COLOUR -> JECFA Functional Classes
• Cosmetics -> Cosmetic colorant; Hair dyeing
• 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.
• D08 - Antiseptics and disinfectants

Synonyms

Acid red 87; Eosin; Eosin yellowish; Eosine Yellowish; Eosine; Eosine G; Eosin YS; Sodium eosine; Bromo acid; Eosine Y; Bromofluorescein; Sodium eosinate; Bronze Bromo; Certiqual Eosine; Bromo Fluorescein; Eosine A

Frequently Asked Questions

What are the CAS number and molecular formula of 2,4,5-7-Tetrabromofluorescein disodium salt?

CAS 548-26-5; molecular formula C20H6Br4Na2O5; molecular weight — g/mol.

What other names is 2,4,5-7-Tetrabromofluorescein disodium salt known by?

Acid red 87, Eosin, Eosin yellowish, Eosine Yellowish, Eosine, Eosine G.

What is the regulatory status of 2,4,5-7-Tetrabromofluorescein disodium salt?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Drugs, Cosmetics; COLOUR: Food Additives; CI ACID RED 87.

Is 2,4,5-7-Tetrabromofluorescein disodium salt classified as hazardous?

7% of GHS notifications report no hazard classification (47 of 671).

What are the key physical properties of 2,4,5-7-Tetrabromofluorescein disodium salt?

Color Additive Status: 74.1322; Color Additive Status: 74.2322; Color Additive Status: 82.1322.

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.