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Urea-methanal polymerisation

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Credit

RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY

Caption

Urea-methanal polymerisation. Methanal solution is added to a beaker containing urea (white) and stirred. Drops of sulphuric acid are added to the beaker and the solution turns opaque before a hard white solid is formed. This is condensation polymerisation reaction in which water is eliminated as urea and methanal molecules combine.

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Clip Properties:

  • Duration: 00:00:59.18
  • Audio: No
  • Interlaced: Yes
  • Capture Format: Sony FS700
  • Codec: Apple ProRes 422 HQ

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