Fluorosulfuric acid Fluorosulfuric acid Fluorosulfuric acid (IUPAC name: sulfurofluoridic acid) is the inorganic compound with the chemical formula HSOF. It is one of the strongest acids commercially available. The formula HSOF emphasizes its relationship to sulfuric acid, HSO; HSOF is a tetrahedral molecule. It is a colourless liquid, although commercial samples are often yellow. Fluorosulfuric acid is a free-flowing colorless liquid. It is soluble in polar organic solvents (e.g. nitrobenzene, acetic acid, and ethyl acetate), but poorly soluble in nonpolar solvents such as alkanes. Reflecting its strong acidity, it dissolves almost all organic compounds that are even weak proton acceptors. HSOF hydrolyzes
2-Hydroxyethyl terephthalic acid Specifically, it is produced in the course of the thermal condensation of terephthalic acid and ethylene glycol: Further dehydration of 2-hydroxyethyl terephthalic acid gives PET. It is also produced by the partial hydrolysis of PET, as catalyzed by the enzyme PETase: 2-Hydroxyethyl terephthalic acid 2-Hydroxyethyl terephthalic acid is an organic compound with the formula HOCHOCCHCOH. It is the monoester of terephthalic acid and ethylene glycol. The compound is a precursor to poly(ethylene terephthalate) (PET), a polymer that is produced on a large scale industrially. 2-Hydroxyethyl terephthalic acid is a colorless solid that is soluble in water and polar organic solvents.