L-(+)-Tartaric acid

Product Name

L-(+)-Tartaric acid, puriss., meets analytical specification of Ph. Eur., NF, 99.7-100.5% (calc. to the dried substance), powder

InChI key

FEWJPZIEWOKRBE-JCYAYHJZSA-N

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

SMILES string

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

vapor density

5.18 (vs air)

grade

puriss.

assay

99.7-100.5% (calc. to the dried substance)

form

powder

optical activity

[α]20/D +12.0 to +12.8°, c = 20% in H₂O

autoignition temp.

797 °F

quality

meets analytical specification of Ph. Eur., NF

impurities

organic volatile impurities, complies (GC)
residual solvents, complies
≤0.001% heavy metals (as Pb)

ign. residue

≤0.05% (as SO₄)

loss

≤0.2% loss on drying, 105 °C

mp

168-170 °C
170-172 °C (lit.)

solubility

water: soluble 150 g/L at 20 °C

anion traces

chloride (Cl^-): ≤100 mg/kg
oxalate (C₂O₄^2-): in accordance
oxalate (as oxalic acid): ≤100 mg/kg
sulfate (SO₄^2-): ≤100 mg/kg

cation traces

As: ≤2 mg/kg
Ca: ≤200 mg/kg
Cu: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Zn: ≤10 mg/kg

suitability

complies for appearance of solution

application(s)

pharmaceutical (small molecule)

Quality Level

200