Erythrosin B
Also known as: Tetraiodofluorescein, Solvent Red 140, Acid Red 51 (free acid), C.I. 45430 (free acid), Iodeosin, Erythrosine J, 2',4',5',7'-Tetraiodofluorescein, 3',6'-Dihydroxy-2',4',5',7'-tetraiodospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one
Erythrosin B (CAS 15905-32-5) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H8I4O5 and a molecular weight of 835.89200 g/mol. Key properties include a melting point of 303ºC (dec.)(lit.), a boiling point of 628.3ºC at 760 mmHg, a density of 2.93 g/cm3 and a flash point of 333.8ºC. It is listed by 1 supplier, from 2.16 to 20.77 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 15905-32-5
- Jingsj CID
- J-22265-7
- Molecular Formula
- C20H8I4O5
- Molecular Weight
- 835.89200 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | BS 25g | ¥54.00 | $0.32 /gBest ¥2.16/g CNY | CN China MOQ 25g | |
In Stock | 96% 25g | ¥300.00 | $1.8 /g ¥12.00/g CNY | CN China MOQ 25g | |
In Stock | 96% 5g | ¥99.00 | $2.96 /g ¥19.80/g CNY | CN China MOQ 5g |
Physicochemical Properties
| Melting Point | 303ºC (dec.)(lit.) |
|---|---|
| Boiling Point | 628.3ºC at 760 mmHg |
| Density | 2.93 g/cm3 |
| Flash Point | 333.8ºC |
| Exact Mass | 835.65500 |
| PSA | 75.99000 |
| LogP | 6.08420 |
| Vapor Pressure | 2.22E-16mmHg at 25°C |
| Refractive Index | 1.972 |
| Storage Conditions | Store at RT. |
| Additional Property | spirit: soluble | Soluble in water, spirit, methanol, methyl cellosolve and ethanol. |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Erythrosin B?
The CAS number of Erythrosin B is 15905-32-5.
What are the molecular formula and molecular weight of Erythrosin B?
Erythrosin B has molecular formula C20H8I4O5 and molecular weight 835.89200 g/mol.
Which suppliers offer Erythrosin B?
1 supplier(s) listed; reference unit price ¥2.16–20.77 /g.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Erythrosin B (CAS 15905-32-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22265-7 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.