Ethylenediaminetetraacetic Acid → Sodium Phosphate, Dibasic

HRID 526020Notes

Reaction equation

HRID 526020 reaction equation
[OH:1][P:2]([O-:5])([O-:4])=[O:3].[Na+:6].[Na+].[OH:8][P:9]([O-:12])([OH:11])=[O:10].[Na+].C(N(CC(O)=O)CC(O)=O)CN(CC(O)=O)CC(O)=O.[OH-].[Na+]>O>[OH:3][P:2]([O-:5])([O-:4])=[O:1].[Na+:6].[Na+:6].[O-:10][P:9]([O:12][P:2]([O-:4])([O-:3])=[O:1])(=[O:11])[O-:8].[Na+:6].[Na+:6].[Na+:6].[Na+:6]

Participants

7

Reactant 4

HCID 6049Ethylenediaminetetraacetic AcidHCID 14798Sodium HydroxideHCID 24203Sodium Phosphate, DibasicHCID 23672064Monosodium phosphate

Product 2

HCID 24203Sodium Phosphate, DibasicHCID 24403Tetrasodium Pyrophosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Procedure

Sodium phosphate dibasic (1M Catalog #S-9763 Sigma Aldrich, St. Louis, Mo.) and sodium diphosphate monobasic solutions (1M, Catalog #S-0751, Sigma Aldrich, St. Louis, Mo.) were prepared in DI water. Sodium phosphate dibasic (7.74 mL) and sodium phosphate monobasic (2.26 ml) solutions were mixed into a beaker. DI water (80.0 mL) was added to the beaker and EDTA was dissolved (186.1 mg, Sigma Aldrich, St. Louis, Mo.) in it. The pH was measured on pH meter (Symphony B70P, VWR International, Pittsburgh, Pa.) and adjusted to 7.40 using 0.1 N sodium hydroxide solution (Catalog #SS276-4, Fisher Scientific, Suwanee, Ga.). The buffer was transferred to a volumetric flask and DI water was added to adjust the final buffer volume to 100 mL.

Workup

  1. dissolutionwas dissolved (186.1 mg, Sigma Aldrich, St. Louis, Mo.) in it
  2. customThe buffer was transferred to a volumetric flask

Sources & evidence

ORD record
ord-8eddd1ca44f340fcb4d41789ed45a85c
Source dataset
uspto-grants-2016_05
Patent number
US09345662B2

Reaction notes

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