33801

L-(+)-Tartaric acid

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

• Synonym(s): (2R,3R)-(+)-Tartaric acid, L-Threaric acid
• Linear Formula: HO₂CCH(OH)CH(OH)CO₂H
• CAS Number: 87-69-4
• Molecular Weight: 150.09
• Beilstein: 1725147
• EC Number: 201-766-0
• MDL number: MFCD00064207
• UNSPSC Code: 12352100
• PubChem Substance ID: 57648910
• NACRES: NA.21

Properties

• Agency: Ph. Eur.; USP/NF; 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 (PO₄^3-): ≤10 mg/kg; sulfate (SO₄^2-): ≤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
• 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
• InChI key: FEWJPZIEWOKRBE-JCYAYHJZSA-N

Description

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.

Application

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

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H318
• Precautionary Statements: P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): 302.0 °F - closed cup
• Flash Point(C): 150 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves