33801 Sigma-Aldrich

L-(+)-Tartaric acid

puriss. p.a., reag. ISO, 99.5-101.0% (calc. to the dried substance)

Synonym: (2R,3R)-(+)-Tartaric acid, L-Threaric acid

  • CAS Number 87-69-4

  • Linear Formula HO2CCH(OH)CH(OH)CO2H

  • Molecular Weight 150.09

  •  Beilstein/REAXYS Number 1725147

  •  EC Number 201-766-0

  •  MDL number MFCD00064207

  •  PubChem Substance ID 57648910

  •  NACRES NA.21



Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
Agency/Method   reag. ISO
Quality Level   200
vapor density   5.18 (vs air)
grade   puriss. p.a.
assay   99.5-101.0% (calc. to the dried substance)
form   powder or crystals
optical activity   [α]20/D +12.0 to +12.8°, c = 20% in H2O
autoignition temp.   797 °F
impurities   ≤0.0005% heavy metals (as Pb)
ign. residue   ≤0.1% (as SO4)
loss   ≤0.1% loss on drying, 105 °C
mp   170-172 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  phosphate (PO43-): ≤10 mg/kg
  sulfate (SO42-): ≤150 mg/kg
cation traces   Ca: ≤20 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  Pb: ≤2 mg/kg
  Zn: ≤5 mg/kg
storage temp.   room temp
SMILES string   O[C@H]([C@@H](O)C(O)=O)C(O)=O
InChI   1S/C4H6O6/c5-1(3(7)8)2(6)4(9)10/h1-2,5-6H,(H,7,8)(H,9,10)/t1-,2-/m1/s1


General description

L-(+)-Tartaric acid is an organic acid naturally found in grapes and wines. It is widely used as flavoring agent and antioxidizing agent for various beverages (grape juices and wines). It can be synthesized starting from L-ascorbic acid (AA, vitamin C). Its forms various hydrogen-L-tartrate salts, which have important applications in crystal engineering studies. Its quantification in grape juice has been carried out by recording HPLC chromatograms.


L-(+)-Tartaric acid may be employed as starting reagent in the synthesis of enantiomeric forms of pyrrolidinoisoquinoline derivatives.

Safety & Documentation

Safety Information

GHS05  GHS05
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
302.0 °F - closed cup
Flash Point(C) 
150 °C - closed cup


Certificate of Analysis (COA)

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