A general view of a Brazilian oil company Petrobras gas station in Brasilia, Brazil March 7, 2023. REUTERS/Adriano MachadoRegister now for FREE unlimited access to Reuters.comApril 27 (Reuters) – Brazil’s Petrobras said on Wednesday its board approved the sale of its 27.88% stake in Deten Quimica SA for 585 million reais ($117.84 million) to Cepsa Quimica SA.The buyer already owns a 69.94% stake in Deten, which manufactures and sells main raw materials for the domestic and commercial cleaning sector in Brazil, according to a securities filing.