1,1-Diphenyl-2-picrylhydrazine

CAS 1707-75-12,4,6-(O2N)3C6H2NHN(C6H5)2Chemical Synthesis

1,1-Diphenyl-2-picrylhydrazine (DPPH), CAS 1707-75-1, is a stable free radical with a molecular weight of 395.33 g/mol. It is widely recognised for its intense purple colour and its utility as a reagent in analytical chemistry, particularly for evaluating antioxidant activity. DPPH is a key compound for spectrophotometric assays, enabling researchers to quantify the radical-scavenging capacity of various substances in diverse scientific fields.

Synonyms: 2,4,6-(O2N)3C6H2NHN(C6H5)2

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1,1-Diphenyl-2-picrylhydrazine (2,4,6-(O2N)3C6H2NHN(C6H5)2) — chemical structure, CAS 1707-75-1; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisHydrazinesNitrogen CompoundsOrganic Building Blocks

01 /Applications

Antioxidant Assays

DPPH is a benchmark reagent for determining the antioxidant potential of compounds and extracts. Its stable free radical nature allows for simple spectrophotometric measurement of its reduction by antioxidants.

Radical Scavenging Studies

Used to investigate the ability of different chemical species to scavenge free radicals. This is crucial in understanding reaction mechanisms and product stability in organic chemistry.

Research and Development

Serves as a valuable building block and reagent in organic synthesis and medicinal chemistry research, aiding in the development of new compounds and materials.

02 /Properties

Molecular weight	395.33
Linear formula	2,4,6-(O2N)3C6H2NHN(C6H5)2
Assay	97%
Melting point	~174 °C (dec.)(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled

Precautionary statements

P280Wear protective gloves, clothing and eye/face protection

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	20/21/22
Safety statements (S)	36/37

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

1707-75-1

MDL number

MFCD00007229

PubChem substance

24856989

Beilstein registry

770319

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 1,1-Diphenyl-2-picrylhydrazine (DPPH) primarily used for?

1,1-Diphenyl-2-picrylhydrazine (DPPH) is primarily used as a stable free radical for spectrophotometric assays to evaluate antioxidant activity and radical scavenging capacity.

What is the CAS number and formula for 1,1-Diphenyl-2-picrylhydrazine?

The CAS number is 1707-75-1. The linear formula is 2,4,6-(O2N)3C6H2NHN(C6H5)2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 1,1-Diphenyl-2-picrylhydrazine with an assay of 97%. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.

How should 1,1-Diphenyl-2-picrylhydrazine be handled safely?

Handle with appropriate personal protective equipment including a dust mask (type N95 US recommended), eyeshields, and gloves. Avoid breathing dust. It is harmful if swallowed, in contact with skin, or if inhaled (H302, H312, H332).

Is 1,1-Diphenyl-2-picrylhydrazine a controlled substance?

Based on the provided data, there is no indication that 1,1-Diphenyl-2-picrylhydrazine is a controlled substance.

How is this chemical shipped and exported?

Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, ensuring appropriate packaging and documentation for international shipments.