1. Basic Composition and Standards

• Main Components: Ethylene glycol (~65%), distilled water (~32%), and additives such as antioxidants, anti-corrosion agents, rust inhibitors, and corrosion inhibitors to ensure material compatibility and thermal stability.

• Compliance Standards: Meets GJB6100-2007 (or GJB6100A). Can replace Russian 65 coolant (28084) and imported O*-65 coolant.

2. Key Performance Indicators

• Temperature Range: Operates in extreme environments from -65°C to +105°C, with a tested freezing point of -68°C, demonstrating exceptional low-temperature performance.

• Physical Properties:

• Appearance: Orange-yellow transparent liquid.

• Density (20°C): 1.085–1.090 kg/m³ (tested: 1.089).

• Refractive Index (n20D): ≥1.400 (tested: 1.480).

• Mechanical Impurities: ≤0.05% (tested: 0.035%).

• pH: ≤8.5 (tested: 8.0).

3. Applications

• Military Use: Ideal for airborne radar systems, missile launch vehicles, rocket engines, military aircraft, and ground-based radar liquid cooling systems. Serves as the standard coolant for radar transmitters and similar equipment.

• Compatibility: Replaces Russian 65 coolant and certain imported variants. Not recommended for civilian vehicles.

4. Performance Advantages

1. Extreme Cold Resistance: Ensures reliable operation in polar environments down to -65°C, supporting all-terrain military operations.

2. Corrosion and Oxidation Resistance: Additive package prevents metal corrosion (e.g., aluminum, steel, copper) and oxidative degradation, extending equipment lifespan.

3. High Thermal Stability: Specific heat capacity of 2.612–3.224 KJ/Kg·K, outperforms anhydrous coolants in heat dissipation efficiency.

4. Safety: Non-flammable. Ethylene glycol toxicity risks are minimal under proper handling due to low volatility and high boiling point.

5. Storage and Shelf Life

• Shelf Life: 3 years unopened (some sources mention 5 years). Post-expiration use requires quality testing.

• Storage: Store in a cool, dry, ventilated area away from light. Keep containers upright and protected from rain, sunlight, and contaminants.

6. Supply and Packaging

• Packaging: Standard 18kg drums; customizable 4kg small packages available.

• Suppliers: Mainly Sinopec Beijing Branch; alternatives include Luhang aviation.

• Pricing: Order minimum 100kg. Price depending on specifications and supply channels.

7. Controversies and Precautions

• Component Inconsistencies: Some sources mention methylal content, but most confirm ethylene glycol as the base. May reflect version differences or labeling errors.

• Toxicity Concerns: Ethylene glycol is toxic but poses low risk with proper handling. Avoid direct skin contact.

Conclusion: The Sinopec Great Wall AF65 coolant is a military-grade, high-performance solution engineered for critical equipment in extreme conditions. Its low-temperature resilience, corrosion resistance, and thermal stability make it indispensable for defense applications, but strict adherence to storage and usage protocols is mandatory.