Chlorine trifluoride


Produkto kodas: N/A
Avaibility : Liko
Molar mass 92.45 g·mol−1
Appearance Colorless gas or greenish-yellow liquid
Odor sweet, pungent, irritating, suffocating[2][3]
Density 3.779 g/L[4]
Melting point −76.34 °C (−105.41 °F; 196.81 K)[4]
Boiling point 11.75 °C (53.15 °F; 284.90 K)[4] (decomposes at 180 °C (356 °F; 453 K))
Exothermic hydrolysis[5]
Solubility Reacts with benzene, toluene, ether, alcohol, acetic acid, selenium tetrafluoride, nitric acid, sulfuric acid, alkali, hexane.[5] Soluble in CCl4 but can be explosive in high concentrations.
Vapor pressure 175 kPa
−26.5×10−6 cm3/mol[6]
Viscosity 91.82 μPa s
63.9 J K−1 mol−1
281.6 J K−1 mol−1
−163.2 kJ mol−1
−123.0 kJ mol−1

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Chlorine trifluoride is an interhalogen compound with the equation ClF3. This dismal, noxious, destructive, and incredibly receptive gas gathers to a pale-greenish yellow fluid, the structure in which it is frequently sold (compressed at room temperature). The build is basically of interest as a part in rocket fills, in plasmaless cleaning and drawing activities in the semiconductor industry,[9][10] in atomic reactor fuel handling, and other mechanical tasks.


Semiconductor industry

In the semiconductor business, chlorine trifluoride is utilized to clean substance fume affidavit chambers. It has the benefit that it very well may be utilized to eliminate semiconductor material from the chamber dividers without the need to destroy the chamber. Not at all like a large portion of the elective synthetic substances utilized in this job, it shouldn’t be enacted by the utilization of plasma since the warmth of the chamber is sufficient to cause it to deteriorate and respond with the semiconductor material.

Rocket force

Chlorine trifluoride has been researched as a superior storable oxidizer in rocket charge frameworks. Taking care of concerns, nonetheless, seriously limit its utilization. John Drury Clark summed up the challenges:

It is, obviously, incredibly harmful, however that is the least of the issue. It is hypergolic with each known fuel, thus quickly hypergolic that no start delay has at any point been estimated. It is additionally hypergolic with so much things as material, wood, and test engineers, also asbestos, sand, and water—with which it responds dangerously. It very well may be kept in a portion of the normal underlying metals—steel, copper, aluminum, and so forth—as a result of the arrangement of a dainty film of insoluble metal fluoride that ensures the majority of the metal, similarly as the undetectable layer of oxide on aluminum holds it back from wrecking in the climate. Assuming, in any case, this coat is liquefied or cleaned off, and gets no opportunity to change, the administrator is gone up against with the issue of adapting to a metal-fluorine fire. For managing the present circumstance, I have consistently suggested a decent pair of running shoes.

The disclosure of chlorine pentafluoride delivered ClF3 old as a potential rocket fuel oxidizer, yet was similarly or considerably more dangerous to produce, store and use. Neither one of the compounds has been utilized in any authority rocket drive framework.

Proposed military applications

Under the code name N-Stoff (“substance N”), chlorine trifluoride was researched for military applications by the Kaiser Wilhelm Institute in Nazi Germany not well before the beginning of World War II. Tests were made against models of the Maginot Line strongholds, and it was discovered to be a compelling joined combustible weapon and toxic substance gas. From 1938, development started on a halfway bunkered, incompletely underground 14,000 m2 weapons processing plant, the Falkenhagen modern complex, which was proposed to create 90 tons of N-Stoff each month, in addition to sarin. Nonetheless, when it was caught by the propelling Red Army in 1945, the manufacturing plant had created simply around 30 to 50 tons, at an expense of more than 100 German Reichsmark per kilograma. N-Stoff was never utilized in war.

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