Chemglass 72,000 mL (72 Liter) Round Bottom Reaction Flask

The Chemglass 72,000 mL (72 Liter) Round Bottom Reaction Flask is a large-capacity, heavy-wall borosilicate vessel engineered for advanced laboratory and industrial chemical processing. Constructed from Borosilicate Glass 33 Expansion (ASTM E438, Type I, Class A), this flask combines superior resistance to chemical corrosion, excellent thermal stability, and robust durability, making it an essential choice for large-scale synthesis and pilot-plant operations.

At HiTechTrader, we specialize in supplying pre-owned and refurbished Chemglass reaction flasks that retain the precision and strength of new glassware at a fraction of the cost. Each flask is carefully evaluated for wall thickness, seal integrity, and overall performance, ensuring reliable results in demanding chemical, pharmaceutical, and industrial environments where both scale and accuracy are critical.

Instrument Overview

1. Brand: Chemglass Life Sciences
2. Product Name: 72,000 mL (72 Liter) Round Bottom Reaction Flask
3. Material: Borosilicate Glass 33 Expansion (ASTM E438, Type I, Class A)
4. Color: Clear glass
5. Origin: Made in the USA

Physical & Design Specifications

1. Capacity: 72,000 mL (72 Liters)
2. Neck Configuration: 3-neck flask 
1. Center Neck (CN): 71/60 outer joint
2. Two Side Necks (SN): 45/50 outer joints
3. Neck Orientation: Vertical for straightforward connection of condensers, funnels, thermometers, or stirrers
4. Diameter (Round Bottom Section): ≈520 mm
5. Heavy-Wall Construction: Designed for strength, long service life, and resistance to mechanical or thermal stress

Glass Properties

1. Maximum Short-Term Temperature: 500°C
2. Annealing Point: 560°C
3. Softening Point: 815°C
4. Maximum Working Temperature: Up to 1270°C (under controlled conditions)
5. Linear Coefficient of Expansion: 32.5 × 10⁻⁷ /°C
6. Refractive Index: 1.473

Uses & Applications

1. Large-scale chemical synthesis and batch reactions
2. Pharmaceutical, biotech, and industrial R&D
3. Controlled heating, refluxing, distillation, and solvent recovery
4. Simultaneous multi-neck operation for stirrers, thermometers, funnels, and condensers
5. Compatible with heating mantles and oil baths for precise, uniform thermal distribution

Additional Notes

1. Suitable for use under mild vacuum or pressure (depending on system setup)
2. Works with standard taper joints and chemically resistant PTFE or FETFE seals
3. Borosilicate construction ensures resistance to thermal shock and aggressive solvents

Why Buy from HiTechTrader?

HiTechTrader provides refurbished and pre-owned Chemglass 72,000 mL Round Bottom Reaction Flasks that deliver reliability, scale, and affordability to laboratories and pilot plants worldwide. Every vessel is inspected for durability, thermal integrity, and proper joint function to ensure dependable operation in high-demand settings. With over 40 years of experience in supplying specialized lab equipment, we offer a trusted source for cost-effective, large-volume reaction glassware, helping your facility achieve results without the expense of brand-new inventory.