E336 Monopotassium tartrate

Potassium bitartrate is a food additive with the label E336.

It is the potassium salt of tartaric acid and is used in food as a leavening agent.

It is not metabolized in the body and is eliminated in the urine without any side effects, however an Admissible Daily Dose of 30mg/kg body weight is indicated (1).

It is also found in: inks and toners, perfumes and fragrances, pharmaceuticals, washing & cleaning products, cosmetics and personal care products and fertilisers.

Studies

Obstructive nephropathy induced with DL-potassium hydrogen tartratein F344 rats.  Inoue K, Morikawa T, Takahashi M, Yoshida M, Ogawa K.  J Toxicol Pathol. 2015 Apr;28(2):89-97. doi: 10.1293/tox.2014-0058. Epub 2015 Feb 9.

Effects of plant food potassium salts (citrate, galacturonate or tartrate)on acid-base status and digestive fermentations in rats.  Sabboh H, Coxam V, Horcajada MN, Rémésy C, Demigné C.  Br J Nutr. 2007 Jul;98(1):72-7.

Molecular Formula: C₄H₅KO₆

Molecular Weight: 188.18

CAS: 868-14-4

EC Number: 212-769-1

Synonyms:

• L(+)-Potassium hydrogen tartrate
• Potassium hydrogen tartrate
• potassium d-tartrate
• 1-Potassium hydrogentartrate
• potassium hydrogentartrate
• kaliumtartrat
• Monopotassium tartrate
• rel-Potassium (2S,3S)-2,3-dihydroxysuccinate(1:1)
• POTASSIUM 3-CARBOXY-2,3-DIHYDROXYPROPANOATE
• KSC657E1T
• NSC155080

References____________________________

(1) Wageningen university