Versachem is headquartered in Pretoria, South Africa and has been operating in the region since 2006.
Financial terms and percentage of the stake were not disclosed. Deloitte and PwC acted as advisors.
Ramón Fernández, CEO of Iberchem, said Versachem's portfolio and expertise was complementary to its own.
“This acquisition will help us to quickly expand our offer in what represents a key market for both our flavour and fragrance divisions. It will definitely accelerate our commitment to developing unique products tailored to local preferences and characteristics."
Iberchem has a commercial presence in 120 countries and 12 R&D/production facilities globally.
In 2017, the group reported sales of €125m.
Rina Wulfsohn, founder and CEO of Versachem, will remain at the privately owned company.
“This alliance will highly benefit our trusted customers in the region mostly by strengthening our existing capabilities and abilities in the development of innovative flavour solutions. It will allow both companies to broaden their offering in South Africa and its neighbouring countries," she said.