The Potassium tartrate, with the CAS registry number 921-53-9, is also known as Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt. Its EINECS registry number is 213-067-8. This chemical's molecular formula is C₄H₄K₂O₆ and molecular weight is 226.27. What's more, both its IUPAC name and systematic name are the same which is called Dipotassium (2R,3R)-2,3-dihydroxybutanedioate. It should be stored in a dry and well-ventilated place. This chemical can be used as food additives.

Physical properties about Potassium tartrate are: (1)ACD/LogP: -1.426; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -5.86; (4)ACD/LogD (pH 7.4): -6.18; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 1.00; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 6; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 93.06 Å²; (13)Flash Point: 209.4 °C; (14)Enthalpy of Vaporization: 75.13 kJ/mol; (15)Boiling Point: 399.3 °C at 760 mmHg; (16)Vapour Pressure: 4.93E-08 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: [K+].[K+].O=C([O-])[C@H](O)[C@@H](O)C([O-])=O
(2) InChI: InChI=1S/C4H6O6.2K/c5-1(3(7)8)2(6)4(9)10;;/h1-2,5-6H,(H,7,8)(H,9,10);;/q;2*+1/p-2/t1-,2-;;/m1../s1
(3) InChIKey: AVTYONGGKAJVTE-OLXYHTOASA-L