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Propidium iodide

Catalog No. P4170 Name Sigma Aldrich
CAS Number 25535-16-4 Website http://www.sigmaaldrich.com
M. F. C27H34I2N4 Telephone 1-800-521-8956
M. W. 668.3946 Fax
Purity ≥94.0% (HPLC) Email
Storage Chembase ID: 105971


IUPAC name
3,8-diamino-5-{3-[diethyl(methyl)azaniumyl]propyl}-6-phenylphenanthridin-5-ium diiodide
IUPAC Traditional name
propidium diiodide
3,8-Diamino-5-[3-(diethylmethylammonio)propyl]-6-phenylphenanthridinium diiodide


Beilstein Number 3843838
PubChem SID 24898510
CAS Number 25535-16-4
MDL Number MFCD00011921
EC Number 247-081-0


Purity ≥94.0% (HPLC)
Melting Point 220-225 °C (dec.)(lit.)
GHS Pictograms GHS07
GHS Signal Word Warning
GHS Hazard statements H315-H319-H335
European Hazard Symbols Irritant Irritant (Xi)
Personal Protective Equipment dust mask type N95 (US), Eyeshields, Gloves
GHS Precautionary statements P261-P305 + P351 + P338
Risk Statements 36/37/38
RTECS SF7949600
Safety Statements 26
German water hazard class 3


Description (English)
Fluorescent stain for nucleic acids. Cell membrane integrity excludes propidium iodide from staining viable and apoptotic cells. Propidium iodide may be used in flow cytometry to evaluate cell viability when used with other dyes that stain viable cells or cells that are early in the apoptosis process.