Potassium sodium tartrate tetrahydrate, commonly known as Rochelle salt, is a double salt of tartaric acid. It was among the first materials discovered to exhibit piezoelectricity, leading to its historical use in electronic components such as crystal phonograph cartridges, microphones, and earpieces.
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Disodium L-tartrate
Food emulsifier and sequestrant
EDTA disodium salt dihydrate
chelating agent for metal ions
TPPTS
ligand for homogeneous catalysis
Edetate sodium
chelating agent for industrial processes
Ethanol
Solvent and chemical intermediate
Potassium L-hydrogentartrate
food acidity regulator and raising agent
L-tartaric acid
Food additive and acidulant
DL-TARTARIC-2,3-D2 ACID
research compound
The international HS code for Potassium sodium tartrate tetrahydrate (CAS 6381-59-5) is 2918.13.
2918.13
2918 13 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
potassium;sodium;(2R,3R)-2,3-dihydroxybutanedioate;tetrahydrate
VZOPRCCTKLAGPN-ZFJVMAEJSA-L
[C@@H]([C@H](C(=O)[O-])O)(C(=O)[O-])O.O.O.O.O.[Na+].[K+]
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