Process for separation of naphthalenedisulfonic acids

Details Process for separation of naphthalenedisulfonic acids Process for separation of naphthalenedisulfonic acids

1980-08-25

1982-04-13

Siegel, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260505P, C07C14324

Patent

active

043247423

ABSTRACT:
A process for separating 1,6-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid or 2,7-naphthalenedisulfonic acid selectively from reaction mixtures obtained by disulfonation of naphthalene under different reaction conditions is disclosed. For example, a particular disulfonation reaction of naphthalene is carried out which favors the formation of a particular isomer. This reaction mixture is diluted with water to adjust the sulfuric acid concentration to 35 to 90% by weight and the temperature is maintained at 0.degree. to 80.degree. C.; 1,6-naphthalene-disulfonic acid is selectively separated at high purity.

REFERENCES:
patent: 2125189 (1938-07-01), Lofton et al.

Affiliated with

Also associated with

Rating

Process for separation of naphthalenedisulfonic acids 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 separation of naphthalenedisulfonic acids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for separation of naphthalenedisulfonic acids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1417064