2-Methylsuccinic acid Molecular Formula: C5H8O4 CAS NO. :498-21-5 EINECS:207-857-1 UN: NONE Main application: Soldering paste.For organic synthesis, used in pesticides, pharmaceuticals, petrochemicals, etc. Physicochemical properties: Appearance: White to beige powder Purity: >99% Refractive index: 1.474 Flashing point: 111.1 °C (Literature data) Vapor pressure: 0.0162 mm Hg ( 25 °C) Storage condition: Stable. Combustible. Incompatible with bases, oxidizing agents, reducing agents. Melting point: 110-115 °C(lit.) Density: 1.4105 g/mL at 25 °C(lit.) Boiling point: 236.5 °C (760 mmHg)