Molekula
Phloxine B
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
Phloxine B is a synthetic, water-soluble dye used primarily in biological staining, fluorescence microscopy, and as a tracer in analytical chemistry. It is a halogenated xanthene dye with strong red fluorescence. Available in powder form, it has a molecular weight of 829.63 g/mol, a CAS number of 18472-87-2, and a molecular formula of C20H2Br4Cl4Na2O5. Store at ambient temperature. Molekula supplies Phloxine B 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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
5 g — £121.40 per pack ex VAT · £145.68 inc. VAT
-
25 g — £199.00 per pack ex VAT · £238.80 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Brownish red powder |
| Solubility | Soluble in water |
| Specific absorption | 994 |
| Absorption Ratio | 1.45 |
| Wavelength of maximum absorption (in 50:50 IMS:Water) | 539nm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 25766172 |
| CAS Number | 18472-87-2 |
| IUPAC Name | disodium;2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-3-oxospiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate |
| Molecular Formula | C20H2Br4Cl4Na2O5 |
| Molecular Weight | 829.63 |
| Exact Mass | 829.5115 |
| SMILES | C1=C2C(=C(C(=C1Br)[O-])Br)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)Br)[O-])Br.[Na+].[Na+] |
| InChIKey | OOYIOIOOWUGAHD-UHFFFAOYSA-L |
| InChI | InChI=1S/C20H4Br4Cl4O5.2Na/c21-5-1-3-17(9(23)15(5)29)32-18-4(2-6(22)16(30)10(18)24)20(3)8-7(19(31)33-20)11(25)13(27)14(28)12(8)26;;/h1-2,29-30H;;/q;2*+1/p-2 |
| PubChem CID | 6433718 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 3212.90.0050 |
| Tariff Code | 3212900000 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H319 Causes serious eye irritation
- H373 May cause damage to organs through prolonged or repeated exposure
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- Acid red 92
- Cyanosin
- Cyanosin B
- Cyanosine WS
- Eosin 10 B
- Eosine Blue
- Magdala Red Technical
- Phloxin B
- Phloxine P
- Water Pink 2
Frequently asked questions
What is Phloxine B used for?
Phloxine B is primarily used as a fluorescent dye in biological staining and as a tracer in analytical chemistry.
What is the chemical formula and molecular weight of Phloxine B?
The formula is C20H2Br4Cl4Na2O5 with a molecular weight of 829.63 g/mol.
How should Phloxine B be stored?
Phloxine B should be stored at ambient temperature, protected from light and moisture.
What grade of Phloxine B is available?
Phloxine B is available in analytical grade for laboratory use.
Can Molekula supply Phloxine B in bulk?
Yes, Molekula can supply Phloxine B in bulk quantities—please contact our sales team for details.
What documentation comes with a Phloxine B order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.