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Ethidium Bromide
(CAS RN:1239-45-8 Product Number:E0370)


Ethidium Bromide
Synonym 3,8-Diamino-5-ethyl-6-phenylphenanthridinium Bromide
Synonym Homidium Bromide

General Information

Product Number E0370

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Purity/Analysis Method >95.0%(HPLC)(T)
Storage Temperature
M.F. / M.W. C21H20BrN3=394.32
CAS RN 1239-45-8
Related CAS RN
MDL Number MFCD00011724
Packaging and Container
  • Product Details
  • Safety & Regulations


Appearance Orange to Brown to Dark purple powder to crystal
Purity(HPLC) min. 95.0 area%
Purity(Argentmetric Titration) min. 95.0 %


Reaxys-RN 3642536
PubChem SID 87569630
Merck Index(14) 4731
RTECS# SF7950000
EC Number 214-984-6


Signal Word Danger
Hazard Statements
  • H302
  • :Harmful if swallowed.
  • H330
  • :Fatal if inhaled.
  • H341
  • :Suspected of causing genetic defects.
Precautionary Statements
  • P260
  • :Do not breathe dust, fume, mist, vapours or spray.
  • P270
  • :Do not eat, drink or smoke when using this product.
  • P280
  • :Wear protective gloves, protective clothing, face protection.
  • P284
  • :Wear respiratory protection.
  • P304+P340+P310
  • :IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER or doctor.
  • P308+P313
  • :IF exposed or concerned: Get medical advice or attention.

Transport Information

UN Number 1544
Class 6.1
Packing Group I
HS Number 2933998090


Ethidium Bromide: A Widely Used Dye for DNA and RNA Detection

Ethidium bromide is widely used for DNA and RNA detection. Ethidium bromide binds to double-stranded DNA as an intercalator, inserting itself between the base pairs in the double helix, resulting in changes in the absorption and fluorescence properties of the dye. Ethidium bromide also is used to detect protein–DNA complexes.


PubMed Literature

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