Tetra Ethyl Ammonium Bromide (TEAB) is well known for its multi purpose roles. It is utilizes as an effective phase transfer catalyst. Known for its stable chemical attributes, this chemical is required in organic chemical synthesis procedure. As suitable source of teraerhylammonium ions, this chemical is required in physiological as well as in pharmacological studies. It is hygroscopic by nature and it easily dilutes in water. It has mild smell and it is offered in around 98% pure form.