Hydrochloric Acid → Pyrocatechol Violet Molybdenum

HRID 19448

Reaction equation

HRID 19448 reaction equation
C(O)(=O)CCC(O)=O.C([O-])(=O)C([O-])=O.[Na+].[Na+].C([O-])(=O)C1C=CC=CC=1.[Na+].[CH:27]1[CH:28]=[CH:29][C:30]([S:50]([OH:53])(=[O:52])=[O:51])=[C:31](/[C:33](/[C:42]2[CH:43]=[CH:44][C:45]([OH:49])=[C:46]([OH:48])[CH:47]=2)=[C:34]2\[CH:35]=[CH:36][C:37]([C:39]([OH:41])=[CH:40]\2)=[O:38])[CH:32]=1.[O-][Mo:55]([O-])(=O)=O.[Na+].[Na+].Cl>O>[CH:27]1[CH:28]=[CH:29][C:30]([S:50]([OH:53])(=[O:51])=[O:52])=[C:31](/[C:33](/[C:34]2[CH:35]=[CH:36][C:37]([OH:38])=[C:39]([OH:41])[CH:40]=2)=[C:42]2\[CH:43]=[CH:44][C:45]([C:46]([OH:48])=[CH:47]\2)=[O:49])[CH:32]=1.[Mo:55]

Participants

8

Reactant 6

HCID 313Hydrochloric AcidHCID 1110Succinic AcidHCID 6125Sodium OxalateHCID 61424Sodium MolybdateHCID 517055Sodium BenzoateHCID 5387296Pyrocatecholsulfonephthalein

Product 1

HCID 137331251Pyrocatechol Violet Molybdenum

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

In 940 ml of ultra pure water, 5.9 g succinic acid, 0.14 g sodium oxalate and 0.5 g sodium benzoate was dissolved. Pyrocatechol violet solution (100 mg dissolved in 40 ml methanol) was added followed by the addition of 16 ml sodium molybdate solution (120 mg dissolved in 50 ml ultrapure water). The pH was adjusted to 2.5 using 50% v/v HCl solution followed by the addition of 2 g polyvinyl alcohol (30-70 kD) and 1 g polyvinyl pyrrolidone (55 kD). The solution was stirred overnight at about 20° C. to about 25° C., e.g. room temperature.

Workup

  1. custome.g. room temperature

Sources & evidence

ORD record
ord-a9bc4c71f69e4b1d8f5c7d7b86b60799
Source dataset
uspto-grants-2010_06
Patent number
US07745153B2

Linked notes

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