Atomistry » Nitrogen » Chemical Properties » Monochloramine
Atomistry »
  Nitrogen »
    Chemical Properties »
      Monochloramine »

Monochloramine, NH2Cl

Gattermann came to the conclusion that the chlorination of ammonia occurs in three stages:

  1. NH3 + Cl2 = NH2Cl (monochloramine) + HCl,
  2. NH2Cl + Cl2 = NHCl2 (dichloramine) + HCl,
  3. NHCl2 + Cl2 = NCl3 (trichloramine) + HCl;


but it was not found possible to isolate either mono- or di-chloramine by this method. Raschig,5 however, prepared monochloramine by mixing dilute equimolecular solutions of ammonia and sodium hypochlorite, and distilling the mixture at low temperatures in a vacuum:

NH3 + NaOCl = NH2Cl + NaOH.

An unstable yellow liquid is obtained which can be solidified into colourless unstable crystals with melting-point -66° C.

Monochloramine is also produced by the hydrolysis of potassium cliloramino-sulphonate with dilute mineral acids:

NHCl.SO3K + H2O = NH2Cl + KHSO4.

Monochloramine is decomposed by alkalies with the formation of ammonia and nitrogen:

(i) 3NH2Cl + 3KOH = NH3 + N2 + 3KCl + 3H2O,

(ii) 3NH2Cl + 2NH3 = N2 + 3NH4Cl;

but at the same time some of the ammonia reacts with the chloramine to produce a small amount of hydrazine hydrochloride:

(iii) NH2Cl + NH3 = N2H4.HCl.

Monochloramine reacts with potassium iodide to form nitrogen iodide.

Last articles

Zn in 7RE3
Zn in 7RDX
Zn in 7RDZ
Zn in 7RWM
Zn in 7PGU
Zn in 7PGR
Zn in 7PGT
Zn in 7PGS
Zn in 7SQE
Zn in 7RWK
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy