Stabilizer Agents for Energetic Materials: BLi-T’s High-Purity Centralite (CAS 85-98-3 & 612-82-8)
Release time: 2025-07-29
To buy high purity Centralite,Methyl Centralit CAS 612-82-8 or Ethyl Centralite CAS 85-98-3 from China one-stop FCL shipment manufacturer at factory price BLiT Chemical info@blithchem.com
BLiT Chemical is a trusted manufacturer and exporter of high-performance stabilizers for energetic materials. We offer two premium-grade products—Centralite I (Ethyl Centralite, CAS 85-98-3) and Centralite II (Methyl Centralite, CAS 612-82-8)—widely used in military explosives, propellants, automotive airbags, and nitrocellulose-based materials. With military-grade specifications and excellent stability profiles, our stabilizers are tailored to meet the stringent demands of both civilian and defense sectors.
Ethyl & Methyl Centralite
| Feature | Centralite I (Ethyl Centralite) | Centralite II (Methyl Centralite) |
| Chemical Name | N,N’-Diethyl-N,N’-diphenylurea | N,N’-Dimethyl-N,N’-diphenylurea |
| Appearance | White crystalline block or powder | White crystalline powder |
| Melting Point | 72.4°C | 121°C |
| Standards | U.S. MIL-E-255A | Chinese Military Standard GJB110A-2020 |
| Main Substitution Group | Ethyl (-C₂H₅) | Methyl (-CH₃) |
Both stabilizers are chemically neutral, non-corrosive, and ideal for long-term storage applications in energetic materials.
Chemical Properties & Safety Features
Stability: Chemically inert under normal conditions; shelf life extends several years depending on environment.
Neutral pH: Non-reactive with acids or bases; protects energetic formulations from corrosion.
Solubility: Insoluble in water; easily dissolves in organic solvents like acetone or ethanol, ensuring homogeneous dispersion.
Low Toxicity: LD50 (oral, rats) >5000 mg/kg — classified as practically non-toxic.
Non-hazardous Handling: Not flammable or explosive; no special hazardous materials protocols required for transportation or storage.
Core Applications & Mechanism of Action
Civilian Applications
Automotive Airbags: Stabilizes sodium azide and other propellants in gas generators, ensuring reliable deployment.
Industrial Explosives: Inhibits self-decomposition in ammonium nitrate-based and emulsified explosives by neutralizing acidic decomposition byproducts.
Nitrocellulose-based Materials: Extends shelf life of coatings, adhesives, and propellant binders.
Military Applications
Explosives for Ammunition: Stabilizes nitrocellulose-based explosives in grenades, bombs, and artillery shells, ensuring long-term storage safety.
Rocket & Missile Propellants: Enhances chemical stability of composite solid propellants, preventing thermal degradation and burn rate fluctuations.
Specialized Military Formulations: Applied in gun propellants, pyrotechnics, and flares to ensure reliable performance over extended storage cycles.
Working Mechanism
Central stabilizers react with decomposition byproducts (such as HNO₃, NO₂) from nitrocellulose and other nitrate esters. Their urea (-NH-CO-NH-) functional groups form stable complexes, thereby interrupting the autocatalytic degradation chain reaction. Additionally, they act as molecular plasticizers, reducing intermolecular forces and improving material flexibility and processing.
Manufacturing Excellence & Certifications
Advanced Synthesis: Improved synthetic route and sealed reactor systems minimize toxic intermediates (e.g., phosgene), ensuring higher safety and environmental compliance.
Purity Control: Batch-to-batch purity variation <0.5%, with standard purity ≥99%.
Selection Guide: Application Scenarios
| Application | Recommended Product | Justification |
| Low-temperature processing / high plasticity | Centralite I (Ethyl Centralite) | Lower melting point (72.4°C) enables easy blending and soft material compatibility |
| High-temperature storage environments | Centralite II (Methyl Centralite) | High melting point (121°C) prevents recrystallization or migration at elevated temps |
Why Choose BLi-T’s Stabilizers?
Military-Grade Quality with Civilian Versatility
Proven Stability in Harsh Environments
Certified Supply to Ammunition & Propellant Producers
Custom Packaging & Global Delivery Support
Optimized for International Supply: One-Stop Containerized Shipping
BLi-T offers a one-stop purchasing solution for energetic material stabilizers. We consolidate your bulk orders into full container loads (FCL) and handle door-to-door international logistics, including:
Export documentation & compliance
Dangerous goods transport consultation (if required)
Flexible packaging: fiber drums, inner plastic bags, or customer-specific formats
Stable long-term supply contracts with reliable lead times
Let us simplify your sourcing process while maintaining cost efficiency, safety, and global compliance.
Q&A
1. What is the difference between Ethyl Centralite (CAS 85-98-3) and Methyl Centralite (CAS 611-92-7) in explosives applications?
Answer:
Ethyl Centralite and Methyl Centralite are both diphenylurea-based stabilizers used in propellants and explosives. The main difference lies in their alkyl groups and melting points. Ethyl Centralite (lower melting point ~72.4°C) is better for low-temperature processing and enhanced plasticizing, while Methyl Centralite (higher melting point ~121°C) is preferred in high-temperature storage environments for long-term thermal stability. Both effectively neutralize decomposition acids from nitrocellulose to prevent auto-catalytic breakdown.
2. Why are stabilizers like Centralite essential in military and civilian explosives?
Answer:
Stabilizers such as Ethyl and Methyl Centralite are critical for preventing the spontaneous degradation of nitrocellulose-based energetic materials. They neutralize acidic decomposition products, extend storage life, maintain consistent performance, and significantly reduce the risk of accidental detonation. These stabilizers are especially important in propellants for missiles, rockets, automotive airbags, and commercial blasting agents.
3. Where can I purchase high-purity Centralite stabilizers compliant with military standards?
Answer:
You can source MIL-spec and GJB-compliant Ethyl and Methyl Centralite directly from BLi-T (Hefei) Chemical Co., Ltd., a certified supplier with advanced production capabilities and automated safety controls. The products are over 99% pure, batch-stable, and shipped globally in ISO container units for turnkey procurement. Contact info@blitchem.com for TDS, COA, and pricing.
