Products Description
Properties of Ethidium Bromide powder
The compound corresponding to CAS 1239-45-8 is Ethidium Bromide (EB), a widely used nucleic acid stain in molecular biology. With a molecular formula of C₂₁H₂₀BrN₃ and molecular weight of 394.31 g/mol, it appears as an odorless dark red powder.
Ethidium Bromide exhibits a melting point of 260–262 ℃ (with decomposition), is highly soluble in water (40 g/L at 25℃) and organic solvents like ethanol and acetone, and forms a dark red aqueous solution. Its structure contains a phenanthridine ring and bromide ion, enabling orange-red fluorescence emission under 302 nm ultraviolet excitation.
| Molecular Formula | C21H20BrN3 |
| Molar Mass | 394.31 |
| Density | 1.3739 (rough estimate) |
| Melting Point | 260-262°C (dec.)(lit.) |
| Flash Point | >100°C |
| Water Solubility | 40 g/L (25 ºC) |
| Solubility | H2O: 10mg/mL, opaque, strongly red |
| Appearance | powder |
| Color | Red to dark purple |
| Odor | Odorless solid |


Application of Ethidium Bromide CAS:1239-45-8
In nucleic acid staining and analysis, EB serves as a highly sensitive fluorescent dye for visualizing DNA and RNA in agarose or polyacrylamide gel electrophoresis. By intercalating between base pairs of nucleic acid double strands, it significantly enhances fluorescence signals, facilitating observation and analysis of nucleic acid fragment size and distribution.
Company Profile
What We Offer
With decades of experience in manufacturing and marketing high-quality chemicals, Gnee Chemical Company, we supply Organic Chemicals, Biochemicals, Pharmaceutical Intermediates, and more.
Gnee Chemical has a skilled workforce in research and development. Our team of more than 200 people is responsible for quality testing, production control and after-sales service as a one-stop service. We provide R&D and production solutions to our global customers.




FAQ
1. Are you a factory manufacturer or a trading company?
We have been a manufacturer since 2012, with our own R&D team in our own lab.
2. How do I get a price?
-We usually quote within 24 hours of receiving your inquiry (excluding weekends and holidays).
-If you need a price urgently, please email or contact us by other means so that we can quote for you.
3. What is your delivery time?
-It depends on the number of orders and the season in which you place your order.
-Usually, orders can be dispatched within 7-15 days for small orders and 25 days for large orders.
4. What is the shipping method?
-You can ship by sea, air, or express (EMS, UPS, DHL, TNT, FEDEX, etc.).
Hot Tags: Deep red powder Ethidium Bromide CAS 1239-45-8, China Deep red powder Ethidium Bromide CAS 1239-45-8 manufacturers, suppliers, factory, 1 Butyl 3 methylimidazolium Methanesulfonate, manganese phthalocyanine, 5 3 Formylphenyl 1 1 3 1 terphenyl 3 3 dicarbaldehyde, Diphenylcarbazone, Solvent Green 28, N 3 2 Oxiranylmethoxy phenyl













