11133-71-4

Basic information

• Product Name: URANIUM FLUORIDE
• Synonyms: URANIUM FLUORIDE
• CAS NO: 11133-71-4
• Molecular Formula: F4U
• Molecular Weight: 314.02
• Mol File: 11133-71-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 19.5°Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: URANIUM FLUORIDE(CAS DataBase Reference)
• NIST Chemistry Reference: URANIUM FLUORIDE(11133-71-4)
• EPA Substance Registry System: URANIUM FLUORIDE(11133-71-4)

Safety Data

• Hazardous Substances Data: 11133-71-4(Hazardous Substances Data)

Usage

General Description

Uranium fluoride is a chemical compound that is composed of uranium and fluorine. Sometimes referred to as uranium hexafluoride (UF6), it is a solid yellow-green crystalline powder that is highly reactive and volatile. It is most commonly used in the process of enriching uranium for nuclear fuel. Uranium fluoride is also utilized in other industrial applications such as the production of fluorine gas and in the semiconductor industry for etching silicon wafers. Due to its radioactive properties, uranium fluoride is considered hazardous and is strictly regulated for handling and transportation.

Upstream product

• 7790-89-8 chlorine monofluoride 
• 7782-41-4 fluorine 
• 14333-26-7 hydrogen fluoride 

Relevant articles and documents

Matrix IR spectra of the products from F2, ClF, and Cl2 reactions with pulsed-laser evaporated uranium atoms

Pulsed Nd:YAG laser ablated uranium atoms were codeposited with F2 and excess Ar onto a CsI window at 12 K. Infrared spectra revealed the presence of several uranium fluorides including the previously characterized UF4, UF5, and UF6. Lower laser energy favored new absorptions at 400, 446, 496, and 561 cm-1. These product absorptions increased stepwise during annealings which permitted diffusion and reaction of the fluorine. Similar studies with ClF produced the above absorptions plus a new band at 554 cm-1 which is tentatively assigned to ClF2-. The first bands appearing at 400 and 446 cm-1 are assigned to UF and UF2, respectively. The 496- and 561-cm-1 bands are tentatively assigned to UF3 and F3-, respectively. Finally, uranium atoms were reacted with Cl2. In addition to several absorptions due to UCl4, a new doublet at 312 and 308 cm-1 is assigned to UCl2.