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Potassium Bitartrate

Potassium Bitartrate
Potassium Bitartrate structure
Chemical Name:
Potassium Bitartrate
faccla;faecla;tartar;faccula;faecula;WINELEES;tartarcream;cremortartari;PotassiuM bitartrat;Potassium bitartrate
Molecular Formula:
Formula Weight:
MOL File:

Potassium Bitartrate Properties

Melting point:
267°C (dec.)
32.5 º (c=10, 1N NaOH)
1.954 g/mL at 25 °C(lit.)
Flash point:
storage temp. 
Store at +15°C to +25°C.
Crystals or Powder
Specific Gravity
Colorless opaque or white
3.4-3.7 (H2O, 20℃)(saturated solution)
optical activity
[α]20/D +8.0 to +9.2°
Water Solubility 
Soluble in water and dilute mineral acid. Insoluble in alcohol.
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
868-14-4(CAS DataBase Reference)
EPA Substance Registry System
Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, monopotassium salt(868-14-4)
  • Risk and Safety Statements
Safety Statements  24/25
WGK Germany  1
RTECS  WW8223000
HS Code  29181300

Potassium Bitartrate price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 243531 Potassium L-tartrate monobasic 99% 868-14-4 5g $22.6 2018-11-13 Buy
Sigma-Aldrich 1549840 Potassium bitartrate United States Pharmacopeia (USP) Reference Standard 868-14-4 3g $348 2018-11-13 Buy
Alfa Aesar A15281 Potassium hydrogen L-tartrate, 98+% 868-14-4 1000g $92.9 2018-11-13 Buy
Alfa Aesar A15281 Potassium hydrogen L-tartrate, 98+% 868-14-4 250g $28.5 2018-11-13 Buy
Sigma-Aldrich 243531 Potassium L-tartrate monobasic 99% 868-14-4 500g $61.2 2018-11-13 Buy

Potassium Bitartrate Chemical Properties,Uses,Production


L (+)-Potassium hydrogen tartrate (also known as potassium bitartrate) is the potassiumacid salt of tartaric acid (a carboxylic acid). It is the byproduct during the winemaking process. It can be used in baking or as a cleaning solution. When mixed with an acidic liquid such as lemon juice or white vinegar, it can be made of a paste-like cleaning agent for metals or some other cleaning applications. It can also be used as a pH buffer component in chemistry. It has been recently shown that it is capable of treating breast cancer.

Chemical Properties

Also known as cream of tartar and potassium acid tartrate, KHC4H4O6 is white water soluble crystals or powder that is used in baking powder, for medicine, and as an acid and buffer in foods.

Chemical Properties

Potassium bitartrate, also known as potassium hydrogen tartrate, has formula KC4H5O6, is a byproduct of winemaking. In cooking it is known as cream of tartar. It is the potassium acid salt of tartaric acid, a carboxylic acid.


Potassium bitartrate crystallizes in wine casks during the fermentation of grape juice, and can precipitate out of wine in bottles.The crystals (wine diamonds) will often form on the underside of a cork in wine-filled bottles that have been stored at temperatures below 10°C , and will seldom, if ever, dissolve naturally into the wine.
These crystals also precipitate out of fresh grape juice that has been chilled or allowed to stand for some time. To prevent crystals forming in homemade grape jam or jelly, fresh grape juice should be chilled overnight to promote crystallisation. The potassium bitartrate crystals are removed by filtering through two layers of cheesecloth. The filtered juice may then be made into jam or jelly. In some cases they adhere to the side of the chilled container, making filtering unnecessary.
The crude form (known as beeswing) is collected and purified to produce the white, odorless, acidic powder used for many culinary and other household purposes.


Largely in baking powders; coloring metals, galvanic tinning of metals; reducer of CrO3 in mordants for wool.


In food
In food, potassium bitartrate is used for:
Stabilizing egg whites, increasing their heat tolerance and volume
Stabilizing whipped cream, maintaining its texture and volume
Preventing sugar syrups from crystallising
Reducing discolouration of boiled vegetables
Thickening Tartar sauce
Additionally it is used as a component of: Baking powder, as an acid ingredient to activate baking soda Sodium-free salt substitutes, in combination with potassium chloride
A similar acid salt, sodium acid pyrophosphate, can be confused with cream of tartar because of their common function as a component of baking powder.
House hold use
Potassium bitartrate can be mixed with an acidic liquid such as lemon juice or white vinegar to make a paste - like cleaning agent for metals such as brass, aluminum or copper, or with water for other cleaning applications such as removing light stains from porcelain.
This mixture is sometimes mistakenly made with vinegar and sodium bicarbonate (baking soda), which actually react to neutralise each other, creating carbon dioxide and a sodium acetate solution. Cream of tartar was often used in traditional dyeing where the complexing action of the tartrate ions were used to adjust the solubility and hydrolysis of mordant salts such as tin chloride and alum.
Cream of tartar, when mixed into a paste with hydrogen peroxide, can be used to clean rust from some hand tools, notably hand files. The paste is applied and allowed to set for a few hours and then washed off with a baking soda/water solution.
Potassium acid tartrate, also known as potassium hydrogen tartrate, is, according to NIST, used as a primary reference standard for a pH buffer. .

Purification Methods

It crystallises from water (17mL/g) between 100o and 0o. Dry it at 110o. [Beilstein 3 IV 1222.]


Coulter, A. D, et al. "Potassium bitartrate crystallisation in wine and its inhibition." Australian Journal of Grape & Wine Research 21.S1(2016):627-641.
Berg, H. W, and M. Akiyoshi. "Utility of potassium bitartrate concentration-product values in wine processing." Amer J Enol Vitic (1971).
Cremer, G. A., and R. Boulton. "The hydrolysis of gelatin by an immobilized acid protease. I. Immobilization and hydrolysis kinetics. " American Journal of Enology & Viticulture 1(1981):14-17.
Dr, María J. Vicent, et al. "The Therapeutic Action of Potassium Bitartrate." Angewandte Chemie 44.26(2005):4061-6.

Potassium Bitartrate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium Bitartrate Suppliers

Global( 184)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21701 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32447 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1852 55
career henan chemical co
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Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23978 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28236 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 8922 58
hdzhl biotechnology co., ltd
86-13032617415 CHINA 1033 58
BOC Sciences
1-631-614-7828 United States 20115 58

View Lastest Price from Potassium Bitartrate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-07-12 Potassium Bitartrate
US $1.00 / KG 1KG 99% 25kg career henan chemical co

Potassium Bitartrate Spectrum

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