Product description
JY400is a synthetic heat transfer oil designed for liquid phase heating systems at 12℃-400℃ or gas phase heating systems at 257℃-400℃, and its important properties are as follows.
Outstanding heat transfer performance——JY400is a synthetic heat transfer oil with excellent thermal stability and low viscosity characteristics, providing effective, reliable, and consistent performance over a wide temperature range of 12℃-400℃.JY400has higher thermal stability among all organic heat transfer media.
Gas phase heat transfer medium——JY400is a eutectic mixture consisting of 26.5% biphenyl and 73.5% diphenyl ether. It can be used as a liquid phase heat transfer oil, and also as a gas phase heat transfer oil in the temperature range of 257℃-400℃ by taking advantage of its evaporation-condensation characteristics.
Low viscosity——JY400maintains very low viscosity even at the lowest use temperature of 12℃. However, considering that it will crystallize below 12℃, measures must be taken to prevent operational problems caused by crystallization when used in colder climates.
Excellent temperature control——SinceJY400can be used as a gas phase heat transfer oil, it can meet the requirements of precise temperature control in heat transfer oil systems.

Scope of application
JY400It has been widely used in the industrial field, such as: chemical fiber industry; chemical industry
For more information about system design and application, pleaseE-mail us or contact ourSales representative.
Typical characteristics
JY400
Liquid phase applicable temperature range: 12 ℃-400 ℃
Gaseous phase applicable temperature range: 257 ℃-400 ℃
| Appearance | Transparent, water-white liquid |
| Component | Biphenyl/biphenyl ether eutectic mixture |
| Crystallization point | 12 ℃ |
| Water content | 300ppm |
| Flash point | 124 ℃ |
| ignition point | 127 ℃ |
| Autoignition point | 621 ℃ |
Dynamic viscosity 40 ℃ 100 ℃ | 2.48mm2/s 0.99mm2/s |
| Density (25 ℃) | 1060kg/m3 |
| Specific gravity (16 ℃ /16 ℃) | 1.069 |
| Coefficient of thermal expansion (200 ℃ ) | 0.000979/ ℃ |
| Volume shrinkage during solidification | 6.27% |
| Volume expansion rate during melting | 6.69% |
| Surface tension (25 ℃) in contact with air | 36.6 dyn/cm |
| Resistivity (20 ℃) | 6.4 × 1011 ohm-cm |
| Average molecular weight | 166 |
| Melting heat | 23.25kcal/kg |
| Boiling point at atmospheric pressure | 257 ℃ |
| Vaporization heat at the maximum operating temperature of 400 ℃ | 206kJ/kg |
Best application scope Liquid phase Gas phase | 12-400 ℃ 257-400 ℃ |
| Permitted maximum film temperature | 425 ℃ |
| Critical temperature | 499 ℃ |
| Subcritical pressure | 33.1 bar |
| Critical density | 327kg/m3 |
The above data is for reference only, and specific indicators should be referred to the "Organic Heat Transfer Fluid"GB 23971-2009 requirements.
. For environmental protection, the health and safety of your employees and your product purchasers, you must make your own determination as to whether it is suitable for your application. The above does not constitute a recommendation of any infringement of patent of any product, process, equipment or formula, and we make no express or implied representation or warranty as to any infringement of patent by the use of this information.With regard to the data or the products involved in the data, we make no express or implied representation or warranty as to their merchantability, fitness for a particular purpose, or any other characteristic thereby resulting.The product safety data sheet provides safety precautions for the use and storage of our products, and you may obtain this information from us. You should obtain and read this safety information before using our products. If any non company product is mentioned on any material, you should also comply with the appropriate industrial hygiene and safety precautions recommended by the manufacturer of that product.