dl-Tartaric acid

CAS Registry Number®

133-37-9

CAS Name

dl-Tartaric acid

Molecular Formula

C4H6O6

Molecular Mass

150.09

Cite this Page

dl-Tartaric acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=133-37-9 (retrieved 2025-07-10) (CAS RN: 133-37-9).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    206 °C

  • Density (1)

    1.79 g/cm³

Source(s)

  • (1) International Chemical Safety Cards data were obtained from the National Institute for Occupational Safety and Health (US)

Other Names and Identifiers

InChI

InChI=1/C4H6O6/c5-1(3(7)8)2(6)4(9)10/h1-2,5-6H,(H,7,8)(H,9,10)/t1-,2-/s2

InChIKey

InChIKey=FEWJPZIEWOKRBE-FNNSSLBKNA-N

SMILES

[C@H]([C@@H](C(O)=O)O)(C(O)=O)O

Canonical SMILES

O=C(O)C(O)C(O)C(=O)O

Other Names for this Substance

  • Butanedioic acid, 2,3-dihydroxy-, (2R,3R)-rel-
  • Tartaric acid, (±)-
  • Butanedioic acid, 2,3-dihydroxy-, (R*,R*)-(±)-
  • rel-(2R,3R)-2,3-Dihydroxybutanedioic acid
  • Paratartaric acid

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Deleted or Replaced CAS Registry Numbers

138508-61-9

CAS INSIGHTSTM
Aspergillus fungus, computer illustration. This is a toxic fungus that causes diseases in humans.