Process for preparing crystalline hydroxylamine-O-sulfonic acid

Details Process for preparing crystalline hydroxylamine-O-sulfonic acid Process for preparing crystalline hydroxylamine-O-sulfonic acid

2008-01-21

2011-10-18

Mayes, Melvin (Department: 1732)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

Reexamination Certificate

active

08038975

ABSTRACT:
A process for preparing crystalline hydroxylamine-O-sulfonic acid bya. reacting hydroxylamine or a hydroxylammonium salt with oleum/sulfuric acid or with chlorosulfonic acid/sulfuric acid at a temperature in the range from 90 to 130° C.,b. continuing to stir the reaction mixture at a temperature in the range from 90 to 130° C. for a period of from 2 to 24 hours,c. cooling the reaction mixture to a temperature in the range from 10 to 40° C. within a period of from 1 to 12 hours andd. subsequently removing and washing the hydroxylamine-O-sulfonic acid which has crystallized out.

REFERENCES:
patent: 3281209 (1966-10-01), Wehrmeister et al.
patent: 4737354 (1988-04-01), Fuchs et al.
patent: 1 667 513 (1971-06-01), None
patent: 36 01 217 (1987-07-01), None
patent: 43 25 438 (1995-02-01), None
patent: 54 14900 (1979-11-01), None
Labch28 2003 http://web.cocc.edu/zziegler/o—chem/recitaitons/labch28.htm.
International Preliminary Report on Patentability for international application PCT/EP2008/050643, mailed Sep. 3, 2009.

Affiliated with

Also associated with

Rating

Process for preparing crystalline hydroxylamine-O-sulfonic acid 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 preparing crystalline hydroxylamine-O-sulfonic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing crystalline hydroxylamine-O-sulfonic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4265595