Description Chemical Name: DL-hydroxysuccinic acid CAS: 617-48-1 Molecular Formula: C4H6O5 Molecular Weight: 134.09 Specifications Appearations: white crystal or crystal powder Assay(C4H6O5): 99.0-100.5% Fumaric acid: 1.00% max Maleic acid: 0.05% max Arsenic: 2ppm max Lead: 2ppm max Sulphated ash: 0.10% max Water insolubles: 0.10% max Specific rotation[α]20: -0.10+0.10° Thedata above is general description, does not as a contract or order constraint.