2,2-Diphenyl-1-picrylhydrazyl
Also known as: DPPH, 1,1-Diphenyl-2-picrylhydrazyl, 1,1-Diphenyl-2-picrylhydrazyl radical, 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl, Diphenylpicrylhydrazyl
2,2-Diphenyl-1-picrylhydrazyl (CAS 1898-66-4) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C18H12N5O6 and a molecular weight of 394.318 g/mol. Key property: a melting point of 136-138ºC. It is classified under GHS with signal word Danger and hazard statements H317 — May cause an allergic skin reaction and H334 — May cause allergy or asthma symptoms if inhaled. It is listed by 1 supplier, from 0.95 to 1.26 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 1898-66-4
- Jingsj CID
- J-13996-8
- Molecular Formula
- C18H12N5O6
- Molecular Weight
- 394.318 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 96% 250mg | ¥238.00 | $0.14 /mgBest ¥0.95/mg CNY | CN China MOQ 250mg | |
In Stock | ≥98.5%(HPLC) 250mg | ¥270.00 | $0.16 /mg ¥1.08/mg CNY | CN China MOQ 250mg | |
In Stock | 96% 100mg | ¥116.00 | $0.17 /mg ¥1.16/mg CNY | CN China MOQ 100mg |
Physicochemical Properties
| Melting Point | 136-138ºC |
|---|---|
| Exact Mass | 394.078766 |
| PSA | 140.70000 |
| LogP | 5.97000 |
| Appearance | green |
| Additional Property | Soluble in dimethyl formamide, ethanol, chloroform, ether, carbon disulfinde, acetone, oils, carbon tetrachloride, glacial acetic acid and toluene. Insoluble in water. |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H334 — May cause allergy or asthma symptoms if inhaled
Activity & Biological Data
| Additional Information | [1]. Kedare SB, et al. Genesis and development of DPPH method of antioxidant assay. J Food Sci Technol. 2011 Aug;48(4):412-22. |
|---|
Frequently Asked Questions
What is the CAS number of 2,2-Diphenyl-1-picrylhydrazyl?
The CAS number of 2,2-Diphenyl-1-picrylhydrazyl is 1898-66-4.
What are the molecular formula and molecular weight of 2,2-Diphenyl-1-picrylhydrazyl?
2,2-Diphenyl-1-picrylhydrazyl has molecular formula C18H12N5O6 and molecular weight 394.318 g/mol.
Which suppliers offer 2,2-Diphenyl-1-picrylhydrazyl?
1 supplier(s) listed; reference unit price ¥0.95–1.26 /mg.
Is 2,2-Diphenyl-1-picrylhydrazyl hazardous?
2,2-Diphenyl-1-picrylhydrazyl has GHS signal word Danger and hazard statements H317 — May cause an allergic skin reaction; H334 — May cause allergy or asthma symptoms if inhaled.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,2-Diphenyl-1-picrylhydrazyl (CAS 1898-66-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13996-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.