Fluorescein (CAS 2321-07-5) — formula C20H12O5, molecular weight 332.3; category organic chemicals.
Fluorescein (CAS 2321-07-5) is a chemical raw material in the organic chemicals category. Its molecular formula C20H12O5 comprises 20 C, 12 H, 5 O atoms. Its molecular weight is about 332.3. Reported physicochemical data: melting point around 315, LogP about 3.4. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 2321-07-5 |
|---|---|
| Molecular Formula | C20H12O5 |
| Molecular Weight | 332.3 |
| Melting Point | 315 |
| LogP | 3.4 |
| Applications | dye for cosmetics, cleansers, other household products, and vascular and ophthalmic diagnosis (may be in form of sodium salt), water indicator (detect leaks, pollution sources |
| Category | Organic Chemicals |
Documented applications: dye for cosmetics, cleansers, other household products, and vascular and ophthalmic diagnosis (may be in form of sodium salt), water indicator (detect leaks, pollution sources.
Fluorescein is a carbon-based organic compound with CAS registry number 2321-07-5 and molecular formula C20H12O5 (molecular weight 332.3), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 2321-07-5
Its molecular formula C20H12O5 comprises 20 C, 12 H, 5 O atoms.
Also known as: Fluorescein · 荧光素
Category: organic chemicals
The CAS registry number of Fluorescein is 2321-07-5.
Molecular formula C20H12O5, molecular weight 332.3.
It is also registered under: Fluorescein, 荧光素.
Recorded applications: dye for cosmetics, cleansers, other household products, and vascular and ophthalmic diagnosis (may be in form of sodium salt), water indicator (detect leaks, pollution sources.
Category: Organic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Fluorescein (CAS 2321-07-5), compiled from public chemistry databases.
| CAS Number | 2321-07-5 |
|---|---|
| PubChem CID | 16850 |
| Molecular Formula | C20H12O5 |
| IUPAC Name | 3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one |
| UNII (FDA) | TPY09G7XIR |
| Molecular Weight | 332.3 |
|---|---|
| XLogP3 | 3.4 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 0 |
| Exact Mass | 332.06847348 |
| Monoisotopic Mass | 332.06847348 |
| Topological Polar Surface Area | 76 |
| Heavy Atom Count | 25 |
| Melting Point | 315 |
|---|---|
| Melting Point | 315 °C (decomposes) |
| Melting Point | 315 °C |
| Solubility | 600 |
| Solubility | In water, 50 mg/L at 20 °C |
| Solubility | 2.55e-02 g/L |
| LogP | 3.4 |
| LogP | 4.3 |
| Color Additive Status | 74.1707 |
| Color Additive Status | 74.2707 |
| Regulatory & food contact | FDA Regulatory Status of Color Additives: Drugs, Cosmetics |
|---|---|
| GHS notifications | 3.4% (13 / 383) |
| GHS notifications | 3.4% (13 / 383) |
|---|---|
| Notified hazard statements | H302 (13.6%), H319 (96.6%) |
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 荧光素