... -921-6 Molecular formula: C5H9ClO Molecular weight: 120.5774 Pivaloyl ChlorideOther names: Pivalyl chloride, trimethylacetyl chloride or 2,2-dimethyl ... oxidant.Quality Index: Colorless or straw yellow liquid. Concentration of Pivaloyl Chloride: ≥99.5%;Concentration of Pivalic Acid: ≤0.25 ... industry,2. Producing Clomazone in agriculture chemical industry. Pivaloyl Chloride (Trimethylacetyl chloride)