Hi Randy hope you are well.
SODIUM FORMALDEHYDE BISULPHITE ?
The products sometimes used in shipping animals, is suggested by the manufacturer to dechlorinate, remove chloramine and control ammonia to reduce toxicity in the shipping bags.
This is the reaction supplied by one of the manufacturers. NH3 + HOCH2SO3Na = H2NCH2SO3Na + H2O
(an aminomethanesulfonate salt) stable at pH below 9 .
The manufacturers process by the product for the other two parts Chlorine and Chloramine are stated below.
OCl- + HOCH2SO3Na = H2NCH2SO4Na + Cl-
NH2Cl + HOCH2SO3Na = H2NCH2SO3Na + H+ + OCl-
Your expertise and comments would be very much appreciated.
Stay safe, best wishes from across the pond, Tony.
After a little more research I found this USA patent.
METHOD AND PRODUCT FOR REMOVAL OF CHLORAMINES, CHLORINE AND AMMONIA FROM AQUACULTURE WATER 75
Inventor: John F. Kuhns, Kansas City, Mo. 73)
Assignee: Aquascience Research Group, Inc., North Kansas City, Mo. (21)
Appl. No.: 738,481 22
Filed: May 28, 1985
OTHER PUBLICATIONS Blasiola, George C., "Chloramines', Pet Age, Jul., 1984, pp. 25-26. Herwig, Nelson, "Toxic Chloramine Induced Intravas 11 Patent Number: 45) Date of Patent: 4,666,610 May 19, 1987 cular Hemolytic Anemia in Fish', Freshwater and Ma rine Aquarium, 5(10), pp. 11-13, 91-92, 1982. Wheaton, Fredrick Warner, Aquacultural Engineering, pp. 608-612, 1977. Allied Chemical Corporation, "Dechlorination', 1977. Helz, George R. and Lynn Kosak-Channing, "Dechlo rination of Wastewater and Cooling Water', Environ. Sci & Tech., 18(2), pp. 48A-55A, 1984. Morrison, Robert T. and Robert N. Boyd, Organic Chemistry, 2nd edition, pp. 639-641, 1966. Walker, J. Frederic, Formaldehyde, 3rd edition, pp, 219, 251-253, 486-488, 621-623, 638, 1975. Primary Examiner-Peter Hruskoci Attorney, Agent, or Firm-Kokjer, Kircher, Bradley, Wharton, Bowman & Johnson 57
ABSTRACT A process for neutralizing chloramines, chlorine and ammonia in marine and fresh waters by adding an alkali metal formaldehydebisulfite in a dry or solution form in which the alkali metal formaldehydebisulfite is selected from the group consisting of sodium formaldehydebi sulfite and potassium formaldehydebisulfite. Preferably, the alkali metal formaldehydebisulfite is sodium formal dehydebisulfite added in the amount at least equal to the greater of the quantity required to react on a one to one molecular basis with 4 times the stoichiometric amount of ammonia, 12 times the stoichiometric amount of monochloramine, 10 times the stoichiometric amount of dichloramine or 12 times the stoichiometric amount of chlorine in the form of hypochlorites present in the water to be treated.
Full test here
https://patentimages.storage.googleapis.com/9d/8d/7d/82bd73cbbe0819/US4666610.pdf