Method for removal of phosgene from boron trichloride

Patent · Tue Sep 20 00:00:00 EDT 1983

OSTI ID:7255781

Freund, S M

Selective ultraviolet photolysis using an unfiltered mercury arc lamp has been used to substantially reduce the phosgene impurity in a mixture of boron trichloride and phosgene. Infrared spectrophotometric analysis of the sample before and after irradiation shows that it is possible to highly purify commercially available boron trichloride with this method. 5 figs.

• DOE Contract Number: W-7405-ENG-36
• Assignee: PTO; EDB-94-124858
• Patent Number(s): US 4405423; A
• Application Number: PPN: US 6-299233
• OSTI ID: 7255781
• Resource Relation: Patent File Date: 3 Sep 1981
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BORON CHLORIDES
PURIFICATION
PHOSGENE
PHOTOLYSIS
SPECTROPHOTOMETRY
ULTRAVIOLET RADIATION
BORON COMPOUNDS
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
HALIDES
HALOGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
RADIATIONS
400500* - Photochemistry