L(+)-Tartaric acid

grade

ACS reagent

Quality Level

300

Agency

reag. ISO
reag. Ph. Eur.

vapor pressure

<5 Pa ( 20 °C)

product line

EMSURE^®

Assay

≥99.5-101.0% dry basis (alkalimetric)

form

solid

autoignition temp.

425 °C

impurities

≤10 ppm Phosphate (PO4)
≤100 ppm Sulfated ash
≤20 ppm Total sulfur (as SO4)
≤350 ppm Oxalic acid
≤5 ppm Chloride (Cl)
≤50 ppm Insoluble matter
≤50 ppm Sulfate (SO4)

loss

≤ 0.2% loss on drying 105°C

pH

1.6 (25 °C 100 g/L in H₂O)

mp

168-170 °C

transition temp

flash point 210 °C

solubility

water: 1390 g/L at 20 °C

density

1.76 g/cm³ at 20 °C

bulk density

1000 kg/m³

cation traces

Ca: ≤20 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
Pb: ≤5 ppm
heavy metals (as Pb): ≤5 ppm

storage temp.

2-30°C

InChI

1S/C4H6O6/c5-1(3(7)8)2(6)4(9)10/h1-2 5-6H (H 7 8)(H 9 10)

InChI key

FEWJPZIEWOKRBE-UHFFFAOYSA-N