Molekula
Rose Bengal (C.I.45440)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Rose Bengal (C.I.45440) is a fluorescent dye used in biological staining, diagnostic assays, and photodynamic therapy. It is a sodium salt of a halogenated xanthene derivative with high water solubility and strong absorption in the visible spectrum. CAS: 632-69-9, Molecular Formula: C20H2Cl4I4Na2O5, Molecular Weight: 1017.64 g/mol, Storage: Ambient temperature. Molekula supplies Rose Bengal (C.I.45440) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — £41.90 per pack ex VAT · £50.28 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Red brown powder |
| Loss on Drying | ≤10% |
| Solubility | Soluble |
| Spectroscopy | Peak 547 nm in water + 1ml 1% sodium carbonate Ratio 1.47 at 532/562 |
| Identification (IR) | Conforms to reference |
| Dye content (by spectrophotometry) | ≥80% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 21825368 |
| CAS Number | 632-69-9 |
| IUPAC Name | disodium;2,3,4,5-tetrachloro-6-(2,4,5,7-tetraiodo-3-oxido-6-oxoxanthen-9-yl)benzoate |
| Molecular Formula | C20H2Cl4I4Na2O5 |
| Molecular Weight | 1017.64 |
| Exact Mass | 1017.4601 |
| SMILES | C1=C2C(=C3C=C(C(=O)C(=C3OC2=C(C(=C1I)[O-])I)I)I)C4=C(C(=C(C(=C4Cl)Cl)Cl)Cl)C(=O)[O-].[Na+].[Na+] |
| InChIKey | UWBXIFCTIZXXLS-UHFFFAOYSA-L |
| InChI | InChI=1S/C20H4Cl4I4O5.2Na/c21-10-8(9(20(31)32)11(22)13(24)12(10)23)7-3-1-5(25)16(29)14(27)18(3)33-19-4(7)2-6(26)17(30)15(19)28;;/h1-2,29H,(H,31,32);;/q;2*+1/p-2 |
| PubChem CID | 32343 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 3212.90.0050 |
| Tariff Code | 3212900000 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2',4',5',7'-TETRAIODO-3,4,5,6-TETRACHLOROFLUORESCEIN DISODIUM SALT
- 3',4',5',6'-TETRACHLORO-2,4,5,7-TETRAIODOFLUORESCEIN DISODIUM SALT
- Aka105(1)
- Bengal Rose B sodium salt
- Japan red 105-1
- Red no. 105-1
- Rose Bengal disodium
- Rose bengal extra
- Rose bengal sodium
- SODIUM TETRAIODOTETRACHLOROFLUORESCEIN
Frequently asked questions
What is Rose Bengal used for?
Rose Bengal (C.I. 45440) is primarily used as a fluorescent dye in biological staining, particularly for detecting dead cells and in ophthalmic diagnostics.
What is the chemical formula and molecular weight of Rose Bengal?
The formula is C20H2Cl4I4Na2O5 with a molecular weight of 1017.64 g/mol.
How should Rose Bengal be stored?
Rose Bengal should be stored at ambient temperature, protected from light and moisture.
What grade of Rose Bengal does Molekula supply?
Molekula supplies Rose Bengal in analytical grade, suitable for laboratory and research applications.
Can Molekula supply Rose Bengal in bulk?
Yes, Molekula can supply Rose Bengal in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a Rose Bengal order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with regulatory standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.