Production of ammonium tetrathiotungstate

Details Production of ammonium tetrathiotungstate Production of ammonium tetrathiotungstate

1985-08-16

1986-08-05

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C01G 3900

Patent

active

046042776

ABSTRACT:
A process is disclosed for producing ammonium tetrathiotungstate. The process involves reacting an ammoniacal tungstate solution with hydrogen sulfide gas, the solution and the gas being in a closed system and the flow of the gas being regulated at an elevated pressure to form a slurry consisting essentially of a solid essentially all of which is ammonium tetrathiotungstate containing a portion of the starting tungsten and a mother liquor containing the balance of the tungsten. The slurry is then cooled to ambient temperature and the solid is removed from the major portion of the mother liquor. The solid is then washed with water and with alcohol followed by removal of the resulting respective water and alcohol washes to remove the remaining portion of the mother liquor and soluble impurities from the solid. The resulting washed solid is then dried at ambient temperature to form the final ammonium tetrathiotungstate.

REFERENCES:
patent: 2556255 (1951-06-01), Carosella
patent: 2892741 (1959-06-01), Spengler et al.
patent: 3764649 (1973-10-01), Kurtak et al.
patent: 3876755 (1975-04-01), Kurtak et al.
patent: 4242328 (1980-12-01), Hem et al.
patent: 4482526 (1984-11-01), Ritsko et al.

Affiliated with

Also associated with

Rating

Production of ammonium tetrathiotungstate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of ammonium tetrathiotungstate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of ammonium tetrathiotungstate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-968362