Sodium tartrate

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Sodium tartrate
IUPAC name	2.3-dihydroxy sodium succinate
Other names	SAL tartar disodium tartrate sodium tartrate dihydrate disodium salt dihydrate butanedioic acid
Identifiers
CAS number	[868-18-8]
Properties
Molecular formula	Na₂C₄H₄O₆
Molar mass	194.067
Appearance	white crystals
Melting point	150°C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Sodium tartrate (Na₂C₄H₄O₆) is used as an emulsifier and a binding agent in food products such as jellies, margarine, and sausage casings.

Because its crystal structure captures a very precise amount of water, it is also a common primary standard for Karl Fischer titration, a common technique to assay water content.

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