Sodium Hydroxide → Ethylenediaminetetra(methylenephosphonic acid)

HRID 128152

Reaction equation

HRID 128152 reaction equation
[CH2:1]([N:22]([CH:32](P(O)(O)=O)[P:33]([OH:36])([OH:35])=[O:34])[CH:23](P(O)(O)=O)[P:24]([OH:27])([OH:26])=[O:25])[CH2:2][N:3]([CH:13](P(O)(O)=O)[P:14]([OH:17])([OH:16])=[O:15])[CH:4](P(O)(O)=O)[P:5]([OH:8])([OH:7])=[O:6].[OH-].[Na+]>S([O-])([O-])(=O)=O.[Zn+2].O>[CH2:1]([N:22]([CH2:23][P:24]([OH:26])([OH:27])=[O:25])[CH2:32][P:33]([OH:36])([OH:35])=[O:34])[CH2:2][N:3]([CH2:4][P:5]([OH:8])([OH:7])=[O:6])[CH2:13][P:14]([OH:16])([OH:17])=[O:15]

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 10234160HCID 10234160, compound2×

Product 1

HCID 15025Ethylenediaminetetra(methylenephosphonic acid)

Reagents, catalysts & solvents 2

HCID 24424Zinc SulfateCatalystHCID 962WaterSolvent

Procedure

To 3.35 kg of water in a stirred crutcher were added 3.0 kg of ethylene diamine tetra (methylene phosphonic acid), followed by 1.7 kg of caustic soda flakes. When all the ethylene diamine tetra (methylene phosphonic acid) was dissolved, 3.95 kg of a zinc sulphate solution (made from 1.975 kg ZnSO4.7H2O in 1.975 kg water) were added slowly. The slurry obtained was drum-dried to obtain a particulate dry product.

Workup

  1. customThe slurry obtained
  2. customwas drum-dried
  3. customto obtain a particulate dry product

Sources & evidence

ORD record
ord-4006a69634e94ac4b31e9e53a1b82e1a
Source dataset
uspto-grants-1981_03
Patent number
US04259200

Linked notes

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