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Potassium bitartrate

Potassium bitartrate structure

CAS No:
868-14-4
Formula:
C4H6O6.K
Chemical Name:
Potassium bitartrate
Synonyms:
Butanedioic acid,2,3-dihydroxy- (2R,3R)-,potassium salt (1:1);Tartaric acid,monopotassium salt;Butanedioic acid,2,3-dihydroxy-[R-(R*,R*)]-,monopotassium salt;Butanedioic acid,2,3-dihydroxy- (2R,3R)-,monopotassium salt;Acid potassium tartrate;Cream of tartar;Cremor tartari;Faecla;Faecula;Potassium acid tartrate;Potassium bitartrate;Potassium hydrogen tartrate;Potassium tartrate (KHC4H4O6);Tartar cream;Tartar;Faccula;Faccla;Monopotassium tartrate;Potassium hydrotartrate;Potassium hydrogen L(+)-tartrate;NSC 155080;35-04-1;6381-58-4
Categories:
Cosmetic Ingredient > Buffering

Description

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. Potassium bitartrate, also known as potassium hydrogen tartrate, has formula KC
4
H
5
O
6
, 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 Basic Attributes

Molecular Weight：

188.18

Exact Mass：

186.965042

BRN：

6119985

EC Number：

212-769-1

DSSTox ID：

DTXSID6042313

Color/Form：

COLORLESS CRYSTALS OR WHITE, CRYSTALLINE POWDER|SLIGHTLY OPAQUE CRYSTALS

ATC Code：

A - Alimentary tract and metabolism

HScode：

29181300

Characteristics

PSA：

115

XLogP3：

-0.76 (calculated)

Appearance：

Colorless opaque or white Crystals or Powder

Density：

1.984 g/cm³ @ Temp: 18 °C

Melting Point：

267°C(dec.)

Flash Point：

210℃

Water Solubility：

soluble in water and dilute mineral acid. Insoluble in alcohol.

Storage Conditions：

Store at +15°C to +25°C.

Specific rotation：

32.5 º (c=10, 1N NaOH)

Taste：

PLEASANT ACIDULOUS TASTE

Experimental Properties：

COLORLESS, RHOMBIC CRYSTALS; SOL IN ACID, ALKALIES; INSOL IN ALC, ACETIC ACID; INDEX OF REFRACTION: 1.511, 1.550, 1.590 /D-FORM/|COLORLESS MONOCLINIC CRYSTALS; SOL IN MINERAL ACID, INSOL IN ALCOHOL; DENSITY: 1.954 /DL-FORM/

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

safety instructions：

24/25

RTECS Number：

WW8223000

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents.

FDA Requirements：

121.101; LIMITATIONS: GRAS, MISCELLANEOUS AND/OR GENERAL-PURPOSE FOOD ADDITIVE AND AS A SEQUESTRANT.

Potassium bitartrate Use and Manufacturing

Methods of Manufacturing

By-products after alcohol removal in winemaking are obtained by recrystallization from the following method. The acid decomposition method of raw tartar solution is added with hydrochloric acid or sulfuric acid. After decolorization and filtration, a refined potassium tartrate potassium sulfate salt solution is obtained, and the soda ash is added to precipitate crystals and separated. Alkaline decomposition method: Raw tartar solution is neutralized with soda ash, decolorized, filtered, and sulfuric acid is added to precipitate crystals. After being neutralized by d-tartaric acid and potassium carbonate, add d-tartaric acid solution to crystallize it.

Uses

As analytical reagents, buffers, reducing agents, etc. used in condiments, food processing, electroplating, and pharmaceutical industries. Mainly used as a leavening agent in the food industry.Commonly used as analytical reagents for the pharmaceutical industry and the preparation of microbial culture media.As a loosening agent, it can be used for baking powder in my country.

Production

(1972) GREATER THAN 4.54X10+5 GRAMS|(1975) GREATER THAN 4.54X10+5 GRAMS

Formulations：

THIS SALT IS ONE OF THE INGREDIENTS IN COMPD JALAP POWDER, FORMERLY IN THE NF.|SALT IS @ LEAST 99.5% PURE.|GRADES: TECHNICAL; NF; FCC.

Manufacturing Info：

Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, potassium salt (1:1): ACTIVE|INCOMPATIBILITIES: BECAUSE IT CONTAINS AN ACIDIC HYDROGEN, IT CAN REACT WITH ALKALINE SUBSTANCES. ITS SLIGHT SOLUBILITY SOMETIMES CAUSES DIFFICULTY IN LIQ MIXTURES.

Analytic Methods：

CREAM OF TARTAR DETERMINED BY TITRATION.

Use Classification：

EPA Safer Chemical Functional Use Classes -> Processing Aids and Additives|Safer Chemical Classes -> Green half-circle - The chemical is expected to be of low concern|Human Drugs -> FDA Approved Drug Products with Therapeutic Equivalence Evaluations (Orange Book) -> Active Ingredients

Computed Properties

Molecular Weight:188.18
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:187.97231936
Monoisotopic Mass:187.97231936
Topological Polar Surface Area:118
Heavy Atom Count:11
Complexity:157
Undefined Atom Stereocenter Count:2
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes

Material

Maleic anhydride

Potassium hydroxide

Potassium carbonate

Hydrogen peroxide

Potassium tartrate

Downstream Products

Potassium carbonate

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Guide of Potassium bitartrate

Description
Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Material
Downstream Products
Recommended Suppliers
Learn More Other Chemicals

Potassium bitartrate

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