Molekula
Dimidium bromide
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
Dimidium bromide is a synthetic organic compound used in research and pharmaceutical development. It is a phenanthridinium dye used as an indicator in the mixed-indicator (dimidium bromide–disulphine blue) two-phase titration of anionic surfactants, as a nucleic acid intercalating stain, and historically as a trypanocide. Available with CAS number 518-67-2, its molecular formula is C20H18BrN3 and molecular weight is 380.28 g/mol. It is stable at ambient storage conditions. Molekula supplies Dimidium bromide 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.
Often bought together
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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1 g — $192.10 per pack
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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 | Light to dark purple powder |
| Melting Point | 246 - 248°C |
| Loss on Drying | Max 5.0% |
| Assay | Min 98% |
| TLC | One single spot |
| Clarity in Solution | 1.2g damp material in 50ml distilled water clear solution even after 24 hours |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 17342775 |
| CAS Number | 518-67-2 |
| IUPAC Name | 5-methyl-6-phenylphenanthridin-5-ium-3,8-diamine bromide |
| EC Number | 208-256-7 |
| Molecular Formula | C20H18BrN3 |
| Molecular Weight | 380.28 |
| Exact Mass | 379.0684 |
| SMILES | C[N+]1=C2C=C(C=CC2=C3C=CC(=CC3=C1C4=CC=CC=C4)N)N.[Br-] |
| InChIKey | MQOKYEROIFEEBH-UHFFFAOYSA-N |
| InChI | InChI=1S/C20H17N3.BrH/c1-23-19-12-15(22)8-10-17(19)16-9-7-14(21)11-18(16)20(23)13-5-3-2-4-6-13;/h2-12,22H,21H2,1H3;1H |
| PubChem CID | 68207 |
| REACH Code | Y110 |
| Tariff Code | 29339980 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- 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
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
- 2,7-Diamino-10-methyl-9-phenylphenanthridinium bromide
- 3,8-diamino-5-methyl-6-phenylphenanthridin-5-ium bromide
- 3,8-Diamino-5-methyl-6-phenylphenanthridinium bromide
- 5-methyl-6-phenylphenanthridin-5-ium-3,8-diamine;bromide
- Phenanthridinium 1553
- Phenanthridinium compound 1553
- Phenanthridinium compound 1553; Phenanthridium 1553
- Phenanthridinium, 3,8-diamino-5-methyl-6-phenyl-, bromide
- PHENANTHRIDINIUM, 3,8-DIAMINO-5-METHYL-6-PHENYL-, BROMIDE (1:1)
- Trypadine
Frequently asked questions
What is Dimidium bromide used for?
Dimidium bromide is a phenanthridinium dye used as an indicator in the mixed-indicator (dimidium bromide–disulphine blue) titration of anionic surfactants and as a nucleic acid intercalating stain. It was also historically used as a trypanocide.
What is the chemical formula and molecular weight of Dimidium bromide?
The chemical formula is C20H18BrN3 and the molecular weight is 380.28 g/mol.
How should Dimidium bromide be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Dimidium bromide is available?
Available in technical grade; custom purity levels may be requested.
Can Molekula supply Dimidium bromide in bulk?
Yes, Molekula can supply Dimidium bromide in bulk quantities—please contact sales for pricing and availability.
What documentation comes with a purchase of Dimidium bromide?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.