Do yellow phosphorus transport tanks require a water seal?
Thread Content
This post was last edited by hnan on 2016-3-30 17:58. Question: Does a phosphorus yellow transport tank require a water seal? Why? Thank you! !
Yellow phosphorus transport tanks require a water seal to ensure they remain isolated from air at all times
I would like to ask whether a water seal is required for phosphorus yellow transport tanks to keep them isolated from air.
Of course, a water seal is needed; otherwise, yellow phosphorus will come into contact with air
Can I seal the jar with nitrogen? Why?
I think using nitrogen works too; maintaining a slight positive pressure achieves the same effect as a water seal.
The filling and transportation of yellow phosphorus must be carried out under a water seal; otherwise, it will catch fire spontaneously once exposed to air, which is extremely dangerous. During filling and unloading, yellow phosphorus must be kept under a water seal and heated with steam or hot water to melt it, so that it can flow and be pumped. The transportation of yellow phosphorus must be carried out using specialized vehicles, such as dedicated train cars for yellow phosphorus or special trucks equipped with tanks for transporting it. The tank truck is equipped with a steam jacket and steam pipe connections for use when heating yellow phosphorus during unloading.
What is the melting point of yellow phosphorus? Thank you! !
Isn’t there yellow phosphorus in barrels? Do barrel-packed ones still need a water seal?
Does yellow phosphorus catch fire on contact with air? Very dangerous! !
It seems that a water seal is still the better option! !
Of course, there are standards: it must be isolated from air!
It’s possible, but it’s not as convenient as water; water can be used to create a seal for control, and its sealing effect is better than that of nitrogen. Nitrogen creates positive pressure, which results in consumption of nitrogen, and this makes operation difficult during transportation
National standard number: 42001; CAS number: 7723-14-0; Molecular formula: P4; Molecular weight: 123.90. It is a colorless to yellow waxy solid with a garlic-like odor; it exhibits weak green phosphorescence in the dark. Vapor pressure: 1.3 kPa at 20°C; Flash point
Seal with water. It is easy to operate. If nitrogen is used, it may become a pressure vessel. It’s quite troublesome to operate.