Molekula
Erythrosin B (C.I.45430)
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
Erythrosin B (C.I. 45430) is a synthetic, iodine-containing red dye primarily used as a food colorant (E127) and in biological staining, particularly for fluorescence microscopy. It is also employed in cosmetics and pharmaceutical formulations. This chemical has a CAS number of 16423-68-0, with the molecular formula C20H6I4Na2O5 and a molecular weight of 879.85 g/mol. It should be stored at ambient conditions and carries a signal word of "Warning" for safety. Molekula supplies Erythrosin 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.
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25 g — $98.40 per pack
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 | Red to brown powder |
| Loss on Drying | <13% |
| Assay | 87 - 100% |
| Water insoluble matter | <0.2% |
| Cadmium (Cd) | <1mg/kg |
| Lead (Pb) | <2mg/kg |
| Mercury (Hg) | <1mg/kg |
| Arsenic (As) | <3mg/kg |
| Fluorescein mg/kg | <20 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 182 °C |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 22595954 |
| CAS Number | 16423-68-0 |
| Molecular Formula | C20H6I4Na2O5 |
| Molecular Weight | 879.85 |
| SMILES | [Na].O=C1OC2(C=3C=CC=CC13)C4=CC(I)=C(O)C(I)=C4OC5=C(I)C(O)=C(I)C=C52 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 3212900050 |
| Tariff Code | 3212900000 |
Safety & GHS
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
No alternate names recorded for this product.
Frequently asked questions
What is Erythrosin B (C.I. 45430) commonly used for?
Erythrosin B is primarily used as a red fluorescent dye in biological staining, food coloring (E127), and as a tracer in medical and scientific research.
What is the chemical formula and molecular weight of Erythrosin B?
The chemical formula is **C₂₀H₆I₄Na₂O₅**, and the molecular weight is **879.85 g/mol**.
How should Erythrosin B be stored?
Store Erythrosin B at **ambient temperature** in a dry, well-ventilated area, away from incompatible substances.
What grades of Erythrosin B does Molekula supply?
Molekula supplies **analytical grade** and **food-grade (E127)** Erythrosin B, depending on application requirements.
Can Molekula supply Erythrosin B in bulk quantities?
Yes, Molekula can supply Erythrosin B in bulk, with quantities tailored to your specific needs—please contact us for pricing and availability.
What documentation comes with an order of Erythrosin B?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
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.