Molekula
4-Phenyl-1,2,4-triazoline-3,5-dione
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4-Phenyl-1,2,4-triazoline-3,5-dione is a heterocyclic organic compound used as a reagent in synthetic chemistry, particularly in cycloaddition reactions and as a dienophile. It is an intensely red crystalline solid, whose colour fades as it reacts, with a molecular formula of C8H5N3O2 and a molecular weight of 175.14 g/mol. It is stable when stored at 2 to 8 °C and classified with a warning signal word due to its reactivity. Molekula supplies 4-Phenyl-1,2,4-triazoline-3,5-dione 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.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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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.
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Specifications
| Property | Value |
|---|---|
| Appearance | Red powder |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90036919 |
| CAS Number | 4233-33-4 |
| IUPAC Name | 4-phenyl-1,2,4-triazole-3,5-dione |
| EC Number | 224-191-7 |
| Molecular Formula | C8H5N3O2 |
| Molecular Weight | 175.14 |
| Exact Mass | 175.0382 |
| SMILES | C1=CC=C(C=C1)N2C(=O)N=NC2=O |
| InChIKey | ISULLEUFOQSBGY-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H5N3O2/c12-7-9-10-8(13)11(7)6-4-2-1-3-5-6/h1-5H |
| PubChem CID | 77913 |
| REACH Code | Y113 |
| HTS Code | 2933998290 |
| Tariff Code | 2933998090 |
Safety & GHS
-
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
- P302+352 IF ON SKIN: Wash with soap and water
- 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, Portuguese, 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
- 3H-1,2,4-Triazole-3,5(4H)-dione, 4-phenyl-
- 4-Phenyl-1,2,3-triazoline-3,5-dione
- 4-phenyl-1,2,4-triazole-3,5-dione
- 4-Phenyl-3H-1,2,4-triazole-3,5(4H)-dione
- 4-phenyl-4,5-dihydro-3H-1,2,4-triazole-3,5-dione
- 4-phenyl-4H-1,2,4-triazole-3,5-dione
- 4-Phenyldehydrourazole
- N-Phenyl-1,3,5-triazoline-2,4-dione
- N-Phenylazodicarboxylic Imide
- PTAD
Frequently asked questions
What is 4-Phenyl-1,2,4-triazoline-3,5-dione used for?
It is primarily used as a reagent in organic synthesis, particularly in cycloaddition reactions and as a dienophile in Diels-Alder reactions.
What is the chemical formula and molecular weight?
The formula is C8H5N3O2 with a molecular weight of 175.14 g/mol.
How should this compound be stored?
Store at 2 to 8 °C in a cool, dry place, protected from light and moisture.
What grade is available?
Available in technical grade; specific purity details can be provided upon request.
Can Molekula supply this in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with the order?
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.