Ammonia → HCID 178527779, compound

HRID 2381559Notes

Reaction equation

HRID 2381559 reaction equation
[Zn:1].[SH:2][C:3]1[S:4][C:5]2[CH:11]=[CH:10][CH:9]=[CH:8][C:6]=2[N:7]=1.N>[OH-].[Na+]>[SH:2][C:3]1[S:4][C:5]2[CH:11]=[CH:10][CH:9]=[CH:8][C:6]=2[N:7]=1.[Zn:1]

Participants

5

Reactant 3

HCID 222AmmoniaHCID 23994ZincHCID 178418395HCID 178418395, compound

Product 1

HCID 178527779HCID 178527779, compound

Reagents, catalysts & solvents 1

HCID 14798Sodium HydroxideSolvent

Procedure

Prepare 340 grams of solution A as in Example 1 with 9.56% zinc. Dissolve 168 grams of 2-mercaptobenzothiazole with melting point of about 180° C. in a solution with 40.4 grams of sodium hydroxide diluted to 805 ml of aqueous solution. The pH of the solution is measured to be 10.88. Mix the two solutions and stir vigorously. The pH of the mixture is measured at 10.92. Ammonia is liberated and white precipitates appear. Filter and wash the precipitates until the pH of the washing water drops to 9.55. Dry the white precipitates at 160° C. for 5 hours and then and mill it to obtain zinc 2-mercaptobenzothiazole, sample No. ZMBT-B, with the following properties:

Workup

  1. additionMix the two solutions
  2. customwhite precipitates
  3. filtrationFilter
  4. washwash the
  5. customprecipitates until the pH of the washing water
  6. customDry the
  7. customwhite precipitates at 160° C. for 5 hours

Sources & evidence

ORD record
ord-7582f0a185c84bf4824e76c711d612d7
Source dataset
uspto-grants-2012_09
Patent number
US08258180B2

Reaction notes

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