Al-Razi, (full name Abū Bakr Muhammad Ibn Zakarīya al-Rāzi) (ابو بکر الرازی), also known as "Zakaria al-Razi" in Arabic; or in Latin as Rhazes and Rasis. According to al-Biruni born in Rayy, Iran in the year 251AH/865AD and died in Rayy, Iran 313AH/925AD.


http://www.ibpassociation.com/encyclopedia/Chemists/Al-Razi.php

Razi was a versatile Persian philosopher who made fundamental and enduring contributions to the fields of medicine, alchemy, and philosophy, recorded in over 184 books and articles in various fields of science. He was well versed in Greek medical knowledge and added substantially to it from his own observations. As an alchemist, Razi is credited with the discovery of sulfuric acid, the "work horse" of modern chemistry and chemical engineering. He also discovered ethanol and its refinement and use in medicine. He was unquestionably one of the greatest thinkers in Islam, and had an enormous influence on European science and medicine.

Razi was a pure rationalist, extremely confident of the power of reason; he was widely regarded by his contemporaries and biographers as liberal and free from any kind of prejudice, very bold and daring in expressing his ideas without a qualm. He believed in man, progress and in "God the Wise".

He traveled in many lands and rendered service to several princes and rulers especially to Baghdad where he had his lab. As a teacher in Medicine he attracted a great amount of students of all diciplines and was said to be compassionate, kind, upright, and devoted to the service of his patients, whether rich or poor.

The modern-day Razi Institute near Tehran, Iran was named after him, and 'Razi Day' ('Pharmacy Day') is commemorated in Iran every August 27