Process for reducing lead leachate in brass plumbing components

Details Process for reducing lead leachate in brass plumbing components Process for reducing lead leachate in brass plumbing components

1994-08-02

1995-10-03

Kastler, Scott

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 221, F23J 100

Patent

active

054548764

ABSTRACT:
A process for treating brass plumbing components to reduce leachable lead when the component is subsequently exposed to water includes exposing the brass component in an aqueous solution containing a desired concentration of chloride and pyrophosphate, with the chloride ion promoting the dissolution of lead from the brass component and the pyrophosphate ion preventing saturation of the solution with lead insuring continuation of the dissolution process.

REFERENCES:
patent: 3669765 (1972-06-01), Bradshaw et al.
patent: 3764399 (1973-10-01), Caule
patent: 3779842 (1973-12-01), Grunwald et al.
patent: 3898137 (1975-08-01), Dueber et al.
patent: 3905907 (1975-09-01), Shiga
patent: 3940303 (1976-02-01), Caule
patent: 3950193 (1976-04-01), Caule
patent: 3975308 (1976-08-01), Myles et al.
patent: 4006041 (1977-02-01), Fabregas et al.
patent: 4182639 (1980-01-01), Pignocco et al.
patent: 4233088 (1980-11-01), Kronstein
patent: 4452650 (1984-06-01), Caule
patent: 4478651 (1984-10-01), Brock et al.
patent: 4582556 (1986-04-01), Butt et al.
patent: 4615643 (1986-10-01), Gouvenot
patent: 4699889 (1987-10-01), Sales et al.
patent: 4737356 (1988-04-01), O'Hara et al.
patent: 4981553 (1991-01-01), Tytgat et al.
patent: 5076941 (1991-12-01), Boffardi et al.
patent: 5118367 (1992-06-01), Starinshak
patent: 5193936 (1993-03-01), Pal et al.

Affiliated with

Also associated with

Rating

Process for reducing lead leachate in brass plumbing components does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for reducing lead leachate in brass plumbing components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for reducing lead leachate in brass plumbing components will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1075038