Prof. Rai Bahadur B.M. Das, passed his M.A. in Chemistry from the Presidency College, Calcutta, standing first in the examination. He took the Degree of M.Sc. in the Applied Chemistry of Leather Manufacture from the Leeds University by submitting a thesis in 1911. Then he worked in a big commercial tannery for one year in Milan, Italy and two years as technical chemist in the German factory of Farbenfabriken Friedrich Bayer & Co.
On his return to India, he joined the National Tannery in Calcutta where he worked as Manager for about 24 years modernizing and expanding the tannery.
He was instrumental in establishing the Bengal Tanning Institute under the Government of Bengal. His services were much sought after by the Federal, provincial and state governments and in due recognition of this, he was awarded the title of ‘Rai Bahadur’ and the Silver Jubilee Medal by the Government of West Bengal.