Molekula
1,3-Diethyl-1,3-diphenylurea
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
1,3-Diethyl-1,3-diphenylurea, also known as ethyl centralite or Centralite I, is a synthetic organic compound used primarily as a stabilizer and gelatinizer (plasticizer) in nitrocellulose-based smokeless powders and propellants. It is a white to off-white crystalline solid with a molecular weight of 268.35 g/mol, formulated as C17H20N2O. The compound has a CAS number of 85-98-3 and should be stored at ambient temperatures. It carries a warning signal word due to potential health hazards. Molekula supplies 1,3-Diethyl-1,3-diphenylurea 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.
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 lump, powder or flake |
| Ash | ≤ 0.10% |
| Acidity | ≤ 0.04% |
| Solidification Point | 71.0 - 72.5 °C |
| Volatile Matter | ≤ 0.10% |
| Amino (secondary amine, tertiary amine) | ≤ 0.20% |
| Melted Material | Bright colour liquid, free from scum and deposit |
| Hydrolyzable Chlorine Compounds Content | ≤ 0.001% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 150 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 78.9 °C |
Source: PubChem CID 6828 (CAMEO Chemicals)
Identification
| Property | Value |
|---|---|
| SKU | 90037300 |
| CAS Number | 85-98-3 |
| IUPAC Name | 1,3-diethyl-1,3-diphenylurea |
| EC Number | 201-645-2 |
| Molecular Formula | C17H20N2O |
| Molecular Weight | 268.35 |
| Exact Mass | 268.1576 |
| SMILES | CCN(C1=CC=CC=C1)C(=O)N(CC)C2=CC=CC=C2 |
| InChIKey | PZIMIYVOZBTARW-UHFFFAOYSA-N |
| InChI | InChI=1S/C17H20N2O/c1-3-18(15-11-7-5-8-12-15)17(20)19(4-2)16-13-9-6-10-14-16/h5-14H,3-4H2,1-2H3 |
| PubChem CID | 6828 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2924.21.1800 |
| Tariff Code | 2924210000 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P501 Dispose of contents/container to an approved waste disposal plant
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
- Bis(N-ethyl-N-phenyl)urea
- Carbamite
- Centralite
- Centralite I
- Centralite-1
- Ethyl centralite
- N,N'-Diethyl-N,N'-diphenylurea
- N,N'-Diethylcarbanilide
- sym-Diethyldiphenylurea
- Urea, N,N'-diethyl-N,N'-diphenyl-
Frequently asked questions
What is 1,3-Diethyl-1,3-diphenylurea used for?
Known as ethyl centralite (Centralite I), it is primarily used as a stabilizer and gelatinizer (plasticizer) for nitrocellulose-based smokeless powders and propellants.
What is the chemical formula and molecular weight?
The formula is C17H20N2O with a molecular weight of 268.35 g/mol.
How should this compound be stored?
Store at ambient temperature, protected from moisture and light.
What grade is available?
Available in technical grade; custom purity options may be available 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).
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.