Molekula
Diphenylamine
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
Diphenylamine is an aromatic amine used primarily as an antioxidant in fuels, rubber, and petroleum products to prevent oxidation and degradation. It also serves as a reagent in analytical chemistry and as a stabilizer in various industrial applications. Diphenylamine has a CAS number of 122-39-4, with the molecular formula (C6H5)2NH and a molecular weight of 169.22. It should be stored at ambient conditions, and it carries a signal word of Danger due to its hazardous properties. Molekula supplies Diphenylamine 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
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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100 g — $58.70 per pack
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250 g — $104.50 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 | White crystalline powder |
| Melting Point | 52.0 - 54.0°C |
| Assay | ≥ 99.0% |
| Residue on Ignition | ≤ 0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Odour | Pleasant, floral odor. |
| Melting Point | 53 °C |
| Boiling Point | 302 °C |
| Solubility (other solvents) | Soluble in oxygenated and aromatic solvents |
| Vapour Pressure | 6.70 × 10⁻⁴ mmHg at 25 °C |
| pKa | pKa = 0.78 |
| log P (octanol/water) | 3.50 |
Source: PubChem CID 11487 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 24186951 |
| CAS Number | 122-39-4 |
| IUPAC Name | N-phenylaniline |
| EC Number | 204-539-4 |
| Molecular Formula | (C6H5)2NH |
| Molecular Weight | 169.22 |
| Exact Mass | 169.0891 |
| SMILES | C1=CC=C(C=C1)NC2=CC=CC=C2 |
| InChIKey | DMBHHRLKUKUOEG-UHFFFAOYSA-N |
| InChI | InChI=1S/C12H11N/c1-3-7-11(8-4-1)13-12-9-5-2-6-10-12/h1-10,13H |
| PubChem CID | 11487 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29214420 |
| Tariff Code | 2921440020 |
Safety & GHS
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H301 + H311 + H331 Toxic if swallowed, in contact with skin or if inhaled
- H373 May cause damage to organs through prolonged or repeated exposure
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- 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, 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
- Aniline, N-phenyl-
- Anilinobenzene
- Benzenamine, N-phenyl-
- Big Dipper
- N-Phenylaniline
- N-Phenylbenzenamine
- N-Phenylbenzeneamine
- N,N-DIPHENYLAMINE
- Phenylaniline
- Scaldip
Frequently asked questions
What is diphenylamine primarily used for?
Diphenylamine is commonly used as a stabilizer for nitrocellulose, in rubber processing, and as a reagent in chemical analysis, including the detection of nitrogen oxides.
What is the molecular formula and molecular weight of diphenylamine?
The molecular formula is **(C6H5)2NH**, and the molecular weight is **169.22 g/mol**.
How should diphenylamine be stored?
Store diphenylamine at **ambient temperature** in a cool, dry place, away from direct sunlight and incompatible substances.
What grades of diphenylamine does Molekula supply?
Molekula supplies **technical-grade diphenylamine** suitable for industrial applications.
Can Molekula supply diphenylamine in bulk quantities?
Yes, Molekula can supply diphenylamine in **bulk quantities**—please contact us for specific packaging options and minimum order quantities.
What documentation comes with an order of diphenylamine?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
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.