7757-81-5

Basic information

• Product Name: SORBIC ACID SODIUM SALT
• Synonyms: SORBIC ACID SODIUM SALT;SODIUM SORBATE;SODIUM 2,4-HEXADIENOATE;2,4-hexadienoicacid,sodiumsalt;sodiumhexa-2,4-dienoate;sorbansodny;sodium (E,E)-hexa-2,4-dienoate
• CAS NO: 7757-81-5
• Molecular Formula: C₆H₇O₂*Na
• Molecular Weight: 134.11
• EINECS: 231-819-3
• Mol File: 7757-81-5.mol

Chemical Properties

• Boiling Point: 233 °C at 760 mmHg
• Flash Point: 139.9 °C
• Appearance: /
• Vapor Pressure: 0.02mmHg at 25°C
• Water Solubility: Soluble in water
• CAS DataBase Reference: SORBIC ACID SODIUM SALT(CAS DataBase Reference)
• NIST Chemistry Reference: SORBIC ACID SODIUM SALT(7757-81-5)
• EPA Substance Registry System: SORBIC ACID SODIUM SALT(7757-81-5)

Safety Data

• Statements: 36
• Safety Statements: 26
• RTECS: WG2220000
• Hazardous Substances Data: 7757-81-5(Hazardous Substances Data)

Usage

Biological Functions

Sorbic acid or sodium sorbate is effective for the inhibition of yeast fermentation in unpasteurized applejuice. It is also effective against many common molds, but generally not against bacterial fermentation. Sodium sorbate, a relatively tasteless material, is preferred instead of benzoate of soda and is just as effective. Benzoate of soda imparts a burning taste that many people find objectionable.

Safety Profile

Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. Mutation data reported. Migrates to food from packaging material. When heated to decomposition it emits toxic fumes of Na2O.

InChI:InChI=1/C6H8O2.Na/c1-2-3-4-5-6(7)8;/h2-5H,1H3,(H,7,8);/q;+1/p-1/b3-2+,5-4+;

Upstream product

• 80466-34-8 2,4-hexadienal 
• 504-60-9 penta-1,3-diene 
• 124-38-9 carbon dioxide 
• 110-44-1 sorbic Acid 
• 32775-95-4 (E)-3,5-hexadienoic acid 
• 2004-70-8 1-methylbuta-1,3-diene 

Downstream Products

• 7367-78-4 n-butyl 2(E),4(E)-hexadienoate 
• 30895-79-5 allyl (E,E)-hexa-2,4-dienoate 
• 1537179-02-4 (S)-tert-butyl-2-((2E,4E)-hexa-2,4-dienamido)-3-phenylpropanoate 

Relevant articles and documents

Investigations on the catalytic carboxylation of olefins with CO2 towards α,β-unsaturated carboxylic acid salts: characterization of intermediates and ligands as well as substrate effects

The carboxylation of olefins beyond ethylene towards α,β-unsaturated carboxylic acid salts and a detailed investigation on the critical steps in the catalysis are reported. The influence of two chelating phosphine ligands and several olefins on the elemental steps of the catalysis is shown. The work focusses on the formation of intermediate olefin complexes, lactone formation and base induced elimination of the lactone. The direct carboxylation of olefins is possible using nickel catalysts, which opens a new route towards the desired α,β-unsaturated carboxylic acid salts. The reaction works particularly well for 1,3-dienes and proceeds via the formation of allyl-carboxylates. The ability to form such allyl-type lactone complexes seems in this case to be the most challenging step towards satisfactory turnover numbers.

Nickel-catalyzed direct carboxylation of olefins with CO2: One-pot synthesis of α,β-unsaturated carboxylic acid salts

The nickel-catalyzed direct carboxylation of alkenes with the cheap and abundantly available C1 building block carbon dioxide (CO2) in the presence of a base has been achieved. The one-pot reaction allows for the direct and selective synthesis of a wide range of a,b-unsaturated carboxylates (TON>100, TOF up to 6 h-1, TON= turnover number, TOF=turnover frequency). Thus, it is possible, in one step, to synthesize sodium acrylate from ethylene, CO2, and a sodium salt. Acrylates are industrially important products, the synthesis of which has hitherto required multiple steps.

Processes for producing polyesters and producing sorbic acid

The invented process for producing a polyester supplies a crotonaldehyde with a purity of 95% by weight or more to a reaction system in the reaction of ketene with crotonaldehyde. In this process, unreacted crotonaldehyde may be recovered from a reaction mixture obtained by the reaction of ketene with crotonaldehyde and may be recycled to the reaction system. The αvinylcrotonaldehyde content of the crotonaldehyde to be supplied to the reaction system is, for example, less than 0.5% by weight, and the paraldehyde content of the crotonaldehyde to be supplied to the reaction system is, for example, less than 5% by weight. By decomposing the above-prepared polyester with, for example, hydrochloric acid, a sorbic acid having a satisfactory hue can be efficiently obtained.

Process for the preparation of unsaturated carboxylic acids

A process for the manufacture of an unsaturated carboxylic acid or salt thereof comprising oxidising the corresponding unsaturated aldehyde with an oxidising agent selected from alkali metal hypohalites, hypohalous acids, peroxides, pyridine N-oxide or peracids in the presence of a transition metal oxide or hydroxide catalyst.

Process for preparing dienoic acids

Dienoic acids are prepared by reaction of salts of 3-butenoic acid and vinyl halides, in the presence of catalysts which are phosphinic complexes of rhodium or nickel.