1: With sodium hydroxide; sodium hydrogensulfite in water T=50 - 65°C; 4 h; 2: With phosphoric acid in water T=45°C; pH=11; 3: With sulfuric acid in water T=55°C; pH=6.5 - 7.5; Product distribution / selectivity;

1: With sodium hydroxide in water T=50 - 65°C; 4 h; 2: With phosphoric acid in water T=45°C; pH=11; 3: With sulfuric acid in water T=55°C; pH=6.5 - 7.5; Product distribution / selectivity;