Phthalic anhydride, ACS reagent, >=99%

CAS Number: 85-44-9 Empirical Formula (Hill Notation): C8H4O3 Molecular Weight: 148.12 Beilstein Registry Number: 118515 EC Number: 201-607-5 MDL Number: MFCD00005918 PubChem Substance ID: 24859242 Grade: ACS reagent Vapor Density: 5.1 (vs air) Vapor Pressure: <0.01 mmHg ( 20 °C) InChI Key: LGRFSURHDFAFJT-UHFFFAOYSA-N Assay: =99%, 99.0-100.2% Autoignition Temp.: 1058 °F Expl. lim.: 10.4 % Ign. Residue: =0.01% bp: 284 °C(lit.) mp: 131-134 °C (lit.) Anion Traces: chloride (Cl-): =0.002%, sulfate (SO42-): =0.003% Cation Traces: Fe: =5 ppm, heavy metals (as Pb): =5 ppm