Molecular Structure of Dl-antimony potassium tartrate (CAS NO.64070-12-8):

IUPAC: Dipotassium; antimony(+3) cation; 2,3-dioxidobutanedioate
Molecular Formula:C₈H₄K₂O₁₂Sb₂
Molecular Weight:613.8
Flash Point:209.4^oC
Boiling Point:399.3^oC at 760 mmHg
SMILES:[K+].[K+].[SbH3+3].[SbH3+3].[O-]C(C(=O)[O-])C([O-])C([O-])=O.[O-]C(=O)C([O-])C([O-])C([O-])=O 
InChI:InChI=1/2C4H4O6.2K.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-XBHQNQODAW 
Enthalpy of Vaporization:75.13 kJ/mol
Vapour Pressure: 4.93E-08 mmHg at 25^oC

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

Poison by intraperitoneal route. See also ANTIMONY COMPOUNDS. When heated to decomposition it 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

 Dl-antimony potassium tartrate with cas registry number of 64070-12-8 is also known as Tartar emetic ; Tartaric acid,antimony potassium salt,trihydrate ; Potassium antimony(III) oxide tartrate hemihydrate ; Dipotassium bis[mu-[tartrato(4-)-O1,O2:O3, O4]]diantimonate(2-) ; Bis[.mu.-[tartrato(4-)-O1,O2:O3,O4]]diantimonato(2-) de dipotasio . It is a white crystalline powder. It is moderately soluble in water and soluble in glycerine but it is insoluble in ethanol . Dl-antimony potassium tartrate with cas registry number of 64070-12-8 is used as a mordant or fixing agent in the leather and textile dying as well as an analytical reagent and a flux additive for electoplating. It is used as a parasiticide or as an emetic and expectorant. It is also used in making insecticides or pesticides.