Potassium sorbate

Base Information

• Chemical Name: Potassium sorbate
• CAS No.: 24634-61-5
• Molecular Formula: C6H7KO2
• Molecular Weight: 150.219
• Hs Code.: 2916 19 95
• Mol file: 24634-61-5.mol

Synonyms:2,4-Hexadienoic acid, potassium salt, (2E,4E)-;potassium (2E,4E)-hexa-2,4-dienoate;Potassium sorbate (E);Potassium (E,E)-2,4-hexadienoate;Potassium 2,4-hexadienoate, (E,E)-;Potassium Sorbate FCC4;2,4-Hexadienoic acid, (E,E)-, potassium salt;Potassium (E,E)-hexa-2,4-dienoate;

Chemical Property of Potassium sorbate

Chemical Property:

• Appearance/Colour: white crystals or powder
• Vapor Pressure: <1 Pa (20 °C)
• Melting Point: 270 °C
• Boiling Point: 233 °C at 760 mmHg
• PKA: 4.69[at 20 ℃]
• Flash Point: 139.9 °C
• PSA: 40.13000
• Density: 1,361 g/cm³
• LogP: -0.13140
• Storage Temp.: 2-8°C
• Solubility.: H2O: 1 M at 20 °C, clear, colorless to fai
• Water Solubility.: 58.2 g/100 mL (20 ºC)

Purity/Quality:

99.0-101.0 % ^*data from raw suppliers

Potassium sorbate ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi,C,T,F
• Hazard Codes: Xi,C,T,F
• Statements: 36/37/38-35-22
• Safety Statements: 26-36-45-36/37/39

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Description: Potassium sorbate is a white crystalline powder. It is a potassium salt of sorbic acid.It was originally discovered in the 1850’s, and was derived from the Mountain Ash Tree. Today, potassium sorbate is synthetically created. Potassium sorbate is a good food preservatives, fully degradable, similar to fatty acids found naturally in foods. It is used to slow the growth of molds and yeasts in foods. It is commonly found in margarine, wines, cheeses, yogurts, soft drinks, and baked goods. Potassium sorbate has been used has a food preservative for many years. There have been extensive long-term tests that have confirmed its safety and it is on the Center for Science in the Public Interest list of safe additives.
• Physical properties: Colorless or white crystalline solid; density 1.36 g/cm3; decomposes at 270°C; soluble in water, 58 g/100 g solution; moderately soluble in alcohol.
• Uses: Potassium sorbate is used to inhibit molds and yeasts in many foods, such as cheese, wine, yogurt, dried meats, apple cider, soft drinks and fruit drinks, and baked goods. It can also be found in the ingredients list of many dried fruit products. In addition, herbal dietary supplement products generally contain potassium sorbate, which acts to prevent mold and microbes and to increase shelf life, and is used in quantities at which there are no known adverse health effects, over short periods of time.Labeling of this preservative on ingredient statements reads as "potassium sorbate" and or "E202". Also, it is used in many personal care products to inhibit the development of microorganisms for shelf stability. Some manufacturers are using this preservative as a replacement for parabens. Also known as "wine stabilizer", potassium sorbate produces sorbic acid when added to wine. It serves two purposes. When active fermentation has ceased and the wine is racked for the final time after clearing, potassium sorbate will render any surviving yeast incapable of multiplying. Yeast living at that moment can continue fermenting any residual sugar into CO2 and alcohol, but when they die no new yeast will be present to cause future fermentation. Sorbic acid is a naturally occurring polyunsaturated fat that has antimicrobial properties. That means that it helps to prevent the growth of molds, yeasts, and fungus. Potassium sorbate is found in many food products, especially those which are meant to be stored and eaten at room temperature. This helps to ward off particles such as mold or fungus that can cause foods to spoil or make people sick. Baked goods, processed fruits and vegetables or dairy products frequently contain this product. When brewing wine, yeast is used to convert sugar to alcohol. This process is called fermentation. When the wine reaches the desired flavour and body, you want to stop the yeast from growing. Potassium sorbate is added to inhibit yeast growth. As mold and yeast inhibitor, like sorbic acid, especially where greater soly in water is desirable. Sorbic acid and its potassium salt is commonly employed as food preservative in wide range of foodstuffs, such as cheese, pickles, sauces and wines. Potassium sorbate is a food grade preservative generally regarded as safe (GRAS) worldwide. It is the inactive salt of sorbic acid. It readily dissolves in water where it converts to sorbic acid, its active form, at a low pH. Sorbic acid is very pH dependent. While it shows some activity up to pH 6 (about 6%), it is most active at pH 4.4 (70%). At pH 5.0 it is 37% active. As sorbic acid, it is considered to be active against mold, fair against yeast and poor against most bacteria. Sorbic acid is an unsaturated fatty acid and as such is subject to oxidation (use of an antioxidant like Mixed Tocopherols T50 is recommended). It is also sensitive to UV light and may turn yellow in solution. Gluconolactone is reported to stabilize potassium sorbate against discoloration and darkening in aqueous solutions and may be useful in stabilizing sorbic acid in the water phase of a product.

Technology Process of Potassium sorbate

There total 1 articles about Potassium sorbate which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 91.5%

sorbic Acid (110-44-1,91751-55-2) → potassium sorbate (24634-61-5)

Guidance literature:

With potassium hydroxide; In water; at 55 ℃; for 0.5h; Temperature;

Reference yield: 95.0%

1-bromo-butane (109-65-9) + potassium sorbate (24634-61-5) → n-butyl 2(E),4(E)-hexadienoate (7367-78-4)

Guidance literature:

With Aliquat 336; for 6h; Heating;

Reference yield: 72.0%

2,2,2-trichloroethyl (2-(tert-butylcarbamoyl)phenyl)sulfamate + potassium sorbate (24634-61-5) → N-(tert-butyl)-2-((2E,4E)-hexa-2,4-dienamido)benzamide

Guidance literature:

In chlorobenzene; at 120 ℃; for 10h;

DOI:10.1021/acs.orglett.8b01977

upstream raw materials:

sorbic Acid

Downstream raw materials:

allyl (E,E)-hexa-2,4-dienoate

n-butyl 2(E),4(E)-hexadienoate

Sorbyl alcohol

(5S,6R)-5,6-Diacetyl-4-methyl-cyclohex-2-enecarboxylic acid 2-oxo-propyl ester

Refernces

• 1、 -. "Method using ceramic membrane reactor to prepare potassium sorbate". Paragraph 0022-0024. . Retrieved 2017/03/17.