Molekula
2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl (C18H12N5O6)
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
2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl, commonly known as DPPH, is a stable free radical used as an analytical reagent in antioxidant (radical-scavenging) assays, as an EPR/ESR spin standard, and as a radical trap and inhibitor. It is a crystalline solid with a molecular formula of C18H12N5O6, a molecular weight of 394.32 g/mol, and a CAS number of 1898-66-4. It must be stored at 2 to 8 °C and is classified as Danger. Molekula supplies 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl 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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250 mg — $58.70 per pack
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1 g — $209.00 per pack
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 | Green/Black/Purple powder |
| Melting Point | ~135 ºC |
| Purity | ≥97.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 74 °C |
| Transport Class | 4.1 |
| Acidity | Acid |
For research use only. Not for human use.
Identification
| Property | Value |
|---|---|
| SKU | 89995998 |
| CAS Number | 1898-66-4 |
| EC Number | 217-591-8 |
| Molecular Formula | C18H12N5O6 |
| Molecular Weight | 394.32 |
| Exact Mass | 394.0788 |
| SMILES | C1=CC=C(C=C1)N(C2=CC=CC=C2)[N]C3=C(C=C(C=C3[N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-] |
| InChIKey | HHEAADYXPMHMCT-UHFFFAOYSA-N |
| InChI | InChI=1S/C18H12N5O6/c24-21(25)15-11-16(22(26)27)18(17(12-15)23(28)29)19-20(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-12H |
| PubChem CID | 2735032 |
| UN Number | UN3224 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2928.00.2500 |
| Tariff Code | 2928009090 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H242 Heating may cause a fire
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P235 Keep cool
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P309+311 IF exposed or you feel unwell: Call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
- 1,1-Diphenyl-2-picrylhydrazyl (free radical)
- 1,1Diphenyl2picrylhydrazyl radical
- 2,2Diphenyl1(2,4,6trinitrophenyl)hydrazinyl
- 2,2Diphenyl1(2,4,6trinitrophenyl)hydrazyl
- 2,2Diphenyl1picrylhydrazyl
- Hydrazinyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)-
- Hydrazyl, 2,2-diphenyl-1-picryl-
- Hydrazyl, 2,2diphenyl1(2,4,6trinitrophenyl)
- N,NDiphenylN'picrylhydrazyl
Frequently asked questions
What is 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl used for?
This compound, known as DPPH, is a stable free radical primarily used in antioxidant (radical-scavenging) assays, as an EPR/ESR calibration standard, and as a radical trap and radical polymerization inhibitor.
What is the chemical formula and molecular weight?
The formula is C18H12N5O6 with a molecular weight of 394.32 g/mol.
How should this compound be stored?
Store at 2 to 8 °C in a cool, dark place, protected from light and moisture.
What grade is available?
Available in research-grade purity; specific grades may vary based on order volume and application.
Can Molekula supply this in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for pricing and lead times.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.