2,4,5-7-四溴荧光素二钠盐

Name: 2,4,5-7-四溴荧光素二钠盐
Brand: 济南圣和化工有限公司

CAS 548-26-5C20H6Br4Na2O5MW 691.9

济南圣和化工有限公司现供应无机化学品——2,4,5-7-四溴荧光素二钠盐（CAS 548-26-5），分子式 C20H6Br4Na2O5，分子量 691.9。本页理化参数仅供参考，实际常规纯度按批次COA提供(不公开发布)，以批次 COA 及订单确认为准，支持批量采购与长期供货协议。

产品概览

CAS号	548-26-5
分子式	C20H6Br4Na2O5
分子量	691.9
纯度	按批次COA提供(不公开发布)
包装	按订单/批次确认(不公开发布)
应用领域	无机化学品
类别	无机化学品

应用领域

无机化学品

2,4,5-7-四溴荧光素二钠盐在无机化学品领域使用广泛。采购前请确认纯度等级与包装形式，以批次 COA 为验收依据。

包装与储存

包装规格按订单/批次确认(不公开发布)

纯度规格按批次COA提供(不公开发布)

储存条件密封、阴凉干燥处保存

运输常规化工运输

样品可协商提供

交期现货/按订单安排

供应说明：2,4,5-7-四溴荧光素二钠盐常规包装为按订单/批次确认(不公开发布)，储存时应密封置于阴凉干燥处，避免与氧化剂混放。济南圣和化工有限公司支持国内物流发货，大货交期与运费以订单确认为准。

质量与文件

每批产品随货提供 COA（分析证书）；可按需提供 MSDS/技术数据表及第三方检测报告。纯度与包装以批次 COA 及订单确认为准。

关于供应商

选择济南圣和化工有限公司的理由：产品信息透明（含 CAS、分子式、理化参数）、报价响应快（一个工作日内）、单证齐全（COA/MSS/质检资料按需提供）、支持批量与长期协议供货。如需 2,4,5-7-四溴荧光素二钠盐以外的配套原料，也欢迎一并列出需求清单。

常见问题

2,4,5-7-四溴荧光素二钠盐的 CAS 号是多少？

2,4,5-7-四溴荧光素二钠盐的 CAS 号为 548-26-5。

该产品的纯度和包装规格是什么？

常规纯度规格为按批次COA提供(不公开发布)，包装为按订单/批次确认(不公开发布)，随货提供 COA。

2,4,5-7-四溴荧光素二钠盐有什么用途？

主要应用于无机化学品。

如何购买或获取报价？

请发送邮件至 info@591daili.com 或通过 WhatsApp 联系，注明产品名称、CAS 号与需求数量，一个工作日内回复报价。供应商：济南圣和化工有限公司。

PubChem 公开数据

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%)

This chemical does not meet GHS hazard criteria for 7% (47 of 671) of reports.

H319 (87%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

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.