Calcium tartrate

Template:Chembox header | Calcium tartrate

Calcium tartrate
Template:Chembox header | General
Systematic name | 2,3-Dihydroxybutendioic acid calcium salt
Molecular formula | CaC4H4O6
SMILES | [Ca++]-OC(=O)C(O)C(O)C(=O)O-
Molar mass | 188.15 g/mol (anhydrous)
260.21 g/mol (tetrahydrate)
Appearance  | hygroscopic white powder
or colorless crystals
CAS number | [3164-34-9] dihydrate
[5892-21-7] anhydrous
Template:Chembox header | Properties
Density | 1.817 g/cm³ tetrahydrate
Solubility in water | 0.037 g/100 ml (0 °C)
HCl
ethanol | soluble
slightly soluble
Melting point | tetrahydrate decomposes at 160 °C
anhydrous decomposes at 650 °C
Chiral rotation [α]D | ?°
Template:Chembox header | Structure
Crystal structure | d or l rhombic
dl triclinic
Template:Chembox header | Hazards
MSDS | Calcium tartrate
Main hazards | ?
NFPA 704 |
R/S statement | R: ?
S: ?
RTECS number  | ?
Template:Chembox header | Supplementary data page
Structure and
properties | n, εr, etc.
Thermodynamic
data | Phase behaviour
Solid, liquid, gas
Spectral data | UV, IR, NMR, MS
Template:Chembox header | Related compounds
tartaric acid
Template:Chembox header | Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Calcium tartrate is a byproduct of the wine industry, prepared from wine fermentation dregs. It finds use as a food preservative. Like tartaric acid, calcium tartrate has two asymmetric carbons, hence it has two chiral isomers and a non-chiral isomer. Most calcium tartrate of biological origin is the chiral levorotatory (–) isomer.

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