Rapid Growth of Pentaerythritol Crystal

Pentaerythritol(PET) crystal has been grown rapidly from the solution with sulfuric acid as the additive. The growth rate of PET crystal in prismatic shape exceeds 1.5 mm/day and crystallization size is 55×55×50 mm3. X-ray diffraction analysis was used to confirm the structure integrity. The diffraction efficiency of rapid-grown crystal was characterized as effective as that of normal growth.