Molekula
Propidium iodide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Propidium iodide is a fluorescent dye used to stain DNA in viability assays and flow cytometry. It is membrane-impermeant, labeling only dead or compromised cells. Available in powder form with a CAS number of 25535-16-4, molecular formula C27H34I2N4, and molecular weight 668.39 g/mol. Store at 2 to 8 °C. Signal word: Warning.
Molekula supplies Propidium iodide at ≥ 95.0% purity in 50 mg and 100 mg packs, from £104.52 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
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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50 mg — £87.10 per pack ex VAT · £104.52 inc. VAT
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100 mg — £155.70 per pack ex VAT · £186.84 inc. VAT
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 | Off white - red solid |
| Assay | ≥ 95.0% |
| Maximum Absoprtion | 535 ± 5nm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
For research use only. Not for human use.
Identification
| Property | Value |
|---|---|
| SKU | 14137305 |
| CAS Number | 25535-16-4 |
| IUPAC Name | 3-(3,8-diamino-6-phenylphenanthridin-5-ium-5-yl)propyl-diethyl-methylazanium diiodide |
| EC Number | 247-081-0 |
| Molecular Formula | C27H34I2N4 |
| Molecular Weight | 668.39 |
| Exact Mass | 668.0873 |
| SMILES | CC[N+](C)(CC)CCC[N+]1=C2C=C(C=CC2=C3C=CC(=CC3=C1C4=CC=CC=C4)N)N.[I-].[I-] |
| InChIKey | XJMOSONTPMZWPB-UHFFFAOYSA-M |
| InChI | InChI=1S/C27H33N4.2HI/c1-4-31(3,5-2)17-9-16-30-26-19-22(29)13-15-24(26)23-14-12-21(28)18-25(23)27(30)20-10-7-6-8-11-20;;/h6-8,10-15,18-19,29H,4-5,9,16-17,28H2,1-3H3;2*1H/q+1;;/p-1 |
| PubChem CID | 104981 |
| REACH Code | Y110 |
| HTS Code | 2933997900 |
| Tariff Code | 2933998090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H341 Suspected of causing genetic defects
Precautionary statements
- P201 Obtain special instructions before use
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 2,7-Diamino-9-phenyl-10 (diethylaminopropyl)-phenanthridium iodide methiodide
- 3,8-Diamino-5-(3-(diethylmethylammonio)propyl)-6-phenylphenanthridinium diiodide
- 3,8-Diamino-5-(3-diethylaminopropyl)-6-phenylphenanthridinium iodide methiodide
- Diiodide, Propidium
- Iodide, Propidium
- Prestwick_1017
- Propidium diiodide
- Propidium iodide (PI)
- Propidium iodide pound PI pound(c)
- Propidium Iodine
Frequently asked questions
What is propidium iodide used for?
Propidium iodide is primarily used as a fluorescent dye to stain DNA in flow cytometry and microscopy, commonly for detecting dead or dying cells.
What is the chemical formula and molecular weight of propidium iodide?
The formula is C27H34I2N4 with a molecular weight of 668.39 g/mol.
How should propidium iodide be stored?
Store at 2 to 8 °C in the dark to maintain stability and prevent degradation.
What grade is available for propidium iodide?
Propidium iodide is supplied with an assay of ≥ 95.0%, as an off-white to red solid with a maximum absorption of 535 ± 5 nm, suitable for laboratory use in flow cytometry and fluorescence microscopy.
Can Molekula supply propidium iodide in bulk?
Yes, Molekula can supply propidium iodide in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a propidium iodide order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Where can I buy Propidium iodide?
Directly from Molekula, which lists Propidium iodide in 50 mg and 100 mg packs from £104.52 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
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.