IUPAC Name: Dipotassium ; Antimony(3+) ; 2,3-Dioxidobutanedioate 
Following is the structure of meso-Antimony potassium tartrate (CAS NO.64070-10-6):
          
Empirical Formula: C₈H₄K₂O₁₂Sb₂
Molecular Weight: 613.8268 g/mol
Flash Point: 209.4 °C
Enthalpy of Vaporization: 75.13 kJ/mol
Boiling Point: 399.3 °C at 760 mmHg
Vapour Pressure of meso-Antimony potassium tartrate (CAS NO.64070-10-6): 4.93E-08 mmHg at 25 °C 
Canonical SMILES: C(C(C(=O)[O-])[O-])(C(=O)[O-])[O-].C(C(C(=O)[O-])[O-])(C(=O)[O-])[O-].[K+].[K+].[Sb+3].[Sb+3]
InChI: InChI=1S/2C4H4O6.2K.2Sb/c2*5-1(3(7)8)2(6)4(9)10;;;;/h2*1-2H,(H,7,8)(H,9,10);/q2*-2;2*+1;2*+3/p-4
InChIKey: GUJUCWZGYWASLH-UHFFFAOYSA-J

Antimony and its compounds are on the Community Right-To-Know List.

Poison by intraperitoneal route. See also ANTIMONY COMPOUNDS. When heated to decomposition, meso-Antimony potassium tartrate (CAS NO.64070-10-6) emits toxic fumes of Sb and K₂O.

OSHA PEL: TWA 0.5 mg(Sb)/m³
ACGIH TLV: TWA 0.5 mg(Sb)/m³
NIOSH REL: (Antimony) TWA 0.5 mg(Sb)/m³

 meso-Antimony potassium tartrate , its cas register number is 64070-10-6. It also can be called Potassium antimonyl meso-tartrate ; and meso-Tartaric acid, antimony potassium salt .