Copper mercaptides as sulfur dioxide indicators

Patent · 31 December 1978

OSTI ID:863339

Eller, Phillip G ^[1]; Kubas, Gregory J ^[1]

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1. Los Alamos, NM

Organophosphine copper(I) mercaptide complexes are useful as convenient and semiquantitative visual sulfur dioxide gas indicators. The air-stable complexes form 1:1 adducts in the presence of low concentrations of sulfur dioxide gas, with an associated color change from nearly colorless to yellow-orange. The mercaptides are made by mixing stoichiometric amounts of the appropriate copper(I) mercaptide and phosphine in an inert organic solvent.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4152118
• OSTI ID: 863339
• Country of Publication: United States
• Language: English

Related Subjects

/436/422/999/
adducts
air-stable
amounts
appropriate
associated
change
color
color change
colorless
complexes
complexes form
concentrations
convenient
copper
dioxide
dioxide gas
form
gas
indicators
inert
mercaptide
mercaptides
mixing
nearly
organic
organic solvent
organophosphine
oxide gas
phosphine
presence
semiquantitative
solvent
stable complexes
stoichiometric
stoichiometric amount
stoichiometric amounts
sulfur
sulfur dioxide
useful
visual
yellow-orange