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| | TERT-BUTYLUREA Basic information |
| | TERT-BUTYLUREA Chemical Properties |
| Melting point | ~185 °C (dec.) | | Boiling point | 217.23°C (rough estimate) | | density | 1.0551 (rough estimate) | | refractive index | 1.4432 (estimate) | | pka | 14.37±0.46(Predicted) | | form | Crystals or Crystalline Powder | | color | White | | BRN | 1744501 | | CAS DataBase Reference | 1118-12-3(CAS DataBase Reference) | | EPA Substance Registry System | tert-Butylurea (1118-12-3) |
| Hazard Codes | Xn | | Risk Statements | 37-20/21/22 | | Safety Statements | 22-24/25 | | WGK Germany | 2 | | RTECS | YS3680000 | | HS Code | 29241900 |
| | TERT-BUTYLUREA Usage And Synthesis |
| Chemical Properties | white crystals or crystalline powder | | Production Methods | tert-Butylurea is produced by
treating 1 mol urea with 2 mol of tert-butanol in
the presence of 2 mol of concentrated sulfuric
acid at 20–25 ℃ with ice cooling. | | Purification Methods | Possible impurity is N,N'-di-tert-butyl urea which is quite insoluble in H2O. Recrystallise it from hot H2O, filter off insoluble material, and cool to 0o to -5o with stirring. Dry in vacuum at room temperature over KOH or H2SO4. If dried at higher temperatures, it sublimes slowly. It can be recrystallised from EtOH as long white needles or from 95% aqueous EtOH as plates. During melting point determination the bath temperature has to be raised rapidly as the urea sublimes slowly above 100o at 760mm. [Smith & Emerson Org Synth Coll Vol III 151 1955, Beilstein 4 IV 665.] |
| | TERT-BUTYLUREA Preparation Products And Raw materials |
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