Hydrochloric Acid → Tricalcium Phosphate

HRID 2364885Notes

Reaction equation

HRID 2364885 reaction equation
Cl.S(OOS([O-])(=O)=O)([O-])(=O)=O.[NH4+].[NH4+].[Na+].[Cl-].[OH:16][P:17]([O-:20])([O-:19])=[O:18].[K+].[K+].[Cl-].[Cl-].[Ca+2:25].C(O)C(N)(CO)CO.C([O-])(O)=O.[Na+]>O>[P:17]([O-:20])([O-:19])([O-:18])=[O:16].[Ca+2:25].[P:17]([O-:20])([O-:19])([O-:18])=[O:16].[Ca+2:25].[Ca+2:25]

Participants

9

Reactant 7

HCID 313Hydrochloric Acid3×HCID 5234Sodium ChlorideHCID 6503Tris(hydroxymethyl)aminomethaneHCID 24450Potassium Phosphate, DibasicHCID 62648Ammonium PersulfateHCID 516892Sodium BicarbonateHCID 5284359Calcium Chloride

Product 1

HCID 24456Tricalcium Phosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Three of the samples were first exposed to a formulation containing 6.4N HCl and 0.15M ammonium persulfate for about one hour, resulting in microtexturing. Three other samples were first exposed to a formulation containing 8N HCl for about 24 hours, resulting in nanotexturing. The final three samples were not exposed to an etching formulation. All nine samples were vertically oriented on a Teflon fixture, and immersed in 1 L of a coating solution for about 16 hours at about 37° C. The coating solution included NaCl (150.2 mM), K2HPO4 (2.4 mM), MgCl2.6H2O (2.5 mM), CaCl2. 2H2O (6 mM), Tris(hydroxymethyl)aminomethane (17.5 mM), NaHCO3 (8 mM), 18 mL of 1N HCl, and water to create a total 1 L solution. The final coating solution had an initial pH of about 6.9 before samples were added. After 16 hours of the coating process, the samples were removed from the coating solution, rinsed three times in ethanol, and dried at ambient room conditions.

Workup

  1. customresulting in microtexturing
  2. customresulting in nanotexturing
  3. additionwere added
  4. customthe samples were removed from the coating solution
  5. washrinsed three times in ethanol
  6. customdried at ambient room conditions

Sources & evidence

ORD record
ord-565661b34c8143a9b3853f73b64018e9
Source dataset
uspto-grants-2014_04
Patent number
US08696759B2

Reaction notes

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