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2,2-Diphenyl-1-picrylhydrazyl (free radical), 95%, Thermo Scientific Chemicals
Description
2,2-Diphenyl-1-picrylhydrazyl is used as a sensitive colorimetric free radical scavenger. It serves as a general antioxidant detector. It is utilized to monitor chemical reactions involving radicals as well as a standard of the position and intensity of electron paramagnetic resonance signals. Further, it is employed in the quantitative determination of aliphatic and aromatic thiols by indirect spectroscopy and for photometric determination of tocopherol.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications
Specifications
Color | Black to Green |
Quantity | 250 mg |
Merck Index | 14,3330 |
Solubility Information | Soluble in dimethyl formamide,ethanol,chloroform,ether,carbon disulfinde,acetone,oils,carbon tetrachloride,glacial acetic acid and toluene. Insoluble in water. |
Formula Weight | 394.32 |
Percent Purity | 95% |
Physical Form | Powder |
Chemical Name or Material | 2,2-Diphenyl-1-picrylhydrazyl (free radical) |
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Certificates
Certificates
A lot number is required to show results for certificates. To find your lot number on previous orders use our order status area.
Lot Number | Certificate Type | Date | Catalog Number |
---|---|---|---|
Y05K038 | Certificate of Analysis | 06/12/2024 | 044150.03,044150.MD |
Y25K023 | Certificate of Analysis | 26/11/2024 | 044150.03,044150.MD |
X17K011 | Certificate of Analysis | 14/11/2024 | 044150.03,044150.MD |
X25K022 | Certificate of Analysis | 08/11/2024 | 044150.03,044150.MD |
Y28I021 | Certificate of Analysis | 17/01/2023 | 044150.03,044150.MD |
Safety and Handling

- 2,2-Diphenyl-1-picrylhydrazyl (free radical)
- Danger
- Respiratory sensitiser Category 1
- Skin sensitiser Category 1
- H317-May cause an allergic skin reaction.
- H334-May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P284-¢In case of inadequate ventilation! wear respiratory protection.
- P302+P352-IF ON SKIN: Wash with plenty of water/soap.
- P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- P333+P313-If skin irritation or rash occurs: Get medical advice/attention.
- P342+P311-If experiencing respiratory symptoms: Call a POISON CENTER/doctor/ .
- MIXTURE LIST-Contains : 2,2-Diphenyl-1-picrylhydrazyl
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