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Table 1 Properties of the (poly)hydroxy carboxylic acids

From: Adsorption of aliphatic polyhydroxy carboxylic acids on gibbsite: pH dependency and importance of adsorbate structure

Compound name (acid) Acronym CAS-no. Sum formula Molar mass [g mol−1] No. of OH No. of COOH pKs1 pKs2
Glycolic GLY 76-14-1 C2H4O3 76.04 1 1 3.83 n.a.
d-Threonic THR 70753-61-6 C4H8O5 136.10 3 1 3.86a n.a.
l-Tartaric TAR 87-69-4 C4H6O6 150.09 2 2 2.98 4.34
d-Gluconic GLU 527-07-1 C6H12O7 196.16 5 1 3.86 n.a.
d-Glucaric GLA 576-42-1 C6H10O8 210.14 4 2 3.17 3.97
Glycolic acid d-Threonic acid l-Tartaric acid d-Gluconic acid d-Glucaric acid
  1. n.a., not applicable
  2. aValue of gluconic acid