Ammonia → HCID 178527779, compound

HRID 2381558Notes

Reaction equation

HRID 2381558 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.[OH-].[K+].N.C(=O)=O>>[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

6

Reactant 5

HCID 222Ammonia2×HCID 280Carbon DioxideHCID 14797Potassium HydroxideHCID 23994ZincHCID 178418395HCID 178418395, compound

Product 1

HCID 178527779HCID 178527779, compound

Conditions

Temperature
50 °C

Procedure

Prepare 600 grams of solution A as in Example 1 with 9.56% zinc. Add 243 grams of 2-mercaptobenzothiazole with acid value of 327 mg of KOH per gram and melting point of about 180° C. to the solution. Stir and warm the solution to 50° C. for one hour. The pH of this solution is measured at 10.67. Heat the solution to boil off the ammonia and carbon dioxide. The solution boils at about 60° C. to 90° C. When all the ammonia is boiled out the temperature rises to 100° C. and the pH drops to 8.57. Cool the mixture to 25° C. Filter the mixture and dry the white precipitate at 150° C. for 6 hours, and then and mill it to obtain zinc 2-mercaptobenzothiazole (ZMBT), sample No. ZMBT-A, with the following properties:

Workup

  1. temperatureHeat the solution
  2. customrises to 100° C.
  3. temperatureCool the mixture to 25° C
  4. filtrationFilter the mixture
  5. customdry the white precipitate at 150° C. for 6 hours

Sources & evidence

ORD record
ord-4e4c9ff5af594b5ba55916f2d9fa76ef
Source dataset
uspto-grants-2012_09
Patent number
US08258180B2

Reaction notes

Loading…