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Potassium benzoate

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Name

Potassium benzoate

EINECS 209-481-3
CAS No. 582-25-2 Density 1.5 g/cm3
PSA 40.13000 LogP 0.05010
Solubility soluble in ethanol; slightly soluble in methanol; insoluble in ether Melting Point >300°C
Formula C7H5KO2 Boiling Point 249.3 °C at 760 mmHg
Molecular Weight 160.214 Flash Point 111.4 °C
Transport Information N/A Appearance White solid
Safety 22-24/25 Risk Codes N/A
Molecular Structure Molecular Structure of 582-25-2 (Potassium benzoate) Hazard Symbols N/A
Synonyms

Benzoicacid, potassium salt (8CI,9CI);Potassium benzoate (6CI);Benzoic acid, potassiumsalt (1:1);

Article Data 43

Potassium benzoate Synthetic route

65-85-0

benzoic acid

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With hydrogen; potassium carbonate In cyclohexane at 149.84℃; under 37503.8 Torr; for 4h; Autoclave;95.2%
With potassium tert-butylate In ethanol for 1h;
With potassium hydroxide In water
With potassium hydroxide In water at 20℃; for 0.5h;
93-58-3

benzoic acid methyl ester

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With Triton X-114; potassium thioacetate at 150℃;90%

endo-3-benzoyloxy-8-aza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester

A

194222-05-4

(1R,3R,5S)-tert-butyl 3-hydroxy-8-azabicyclo[3.2.1]octane-8-carboxylate

B

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With potassium hydroxide In ethanol at 20℃; for 72h;A 80%
B n/a
With potassium hydroxide In ethanol at 20℃; for 72h;A 80%
B n/a
98-88-4

benzoyl chloride

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With potassium trimethylsilonate In diethyl ether at 25℃; for 0.125h;75%
With acrylic acid n-butyl ester; potassium carbonate; thiourea In water for 24h;
93-99-2

benzoic acid phenyl ester

10519-96-7

potassium trimethylsilonate

582-25-2

Potassium benzoate

Conditions
ConditionsYield
In tetrahydrofuran74%
588-64-7

benzaldehyde phenylhydrazone

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With potassium trimethylsilonate In tetrahydrofuran at 20℃; for 16h;60%
67-56-1

methanol

100-52-7

benzaldehyde

A

93-58-3

benzoic acid methyl ester

B

4686-14-0

2-phenyl-2-(phenylimino)acetonitrile

C

53170-30-2

N1-hydroxy-N1,N2-diphenylbenzamidine

D

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With nitrobenzene; potassium cyanide; dibenzo-18-crown-6 In benzene at 80℃; for 8h;A 47%
B 4.6%
C 2%
D 19.3%
67-56-1

methanol

104-88-1

4-chlorobenzaldehyde

A

1126-46-1

Methyl 4-chlorobenzoate

B

6833-15-4

4-chlorobenzanilide

C

54615-66-6

α-phenylimino-p-chlorophenylacetonitrile

D

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With nitrobenzene; potassium cyanide; dibenzo-18-crown-6 at 80℃; for 14h;A 44.4%
B 1.2%
C 2.5%
D 30%
With nitrobenzene; potassium cyanide; dibenzo-18-crown-6 In benzene at 80℃; for 14h;A 44.4%
B 1.2%
C 2.5%
D 30%
67-56-1

methanol

104-88-1

4-chlorobenzaldehyde

A

1126-46-1

Methyl 4-chlorobenzoate

B

82700-99-0

4-chloro-N-phenyl-benzimidic acid methyl ester

C

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With nitrobenzene; potassium cyanide; dibenzo-18-crown-6 at 80℃; for 14h;A 38.5%
B 18.3%
C 19%
100-52-7

benzaldehyde

67-63-0

isopropyl alcohol

A

939-48-0

isopropyl benzoate

B

1459-20-7

1,2-diphenyl-2-oxoethyl benzoate

C

4686-14-0

2-phenyl-2-(phenylimino)acetonitrile

D

582-25-2

Potassium benzoate

Conditions
ConditionsYield
With nitrobenzene; potassium cyanide; dibenzo-18-crown-6A 2.5%
B 35.3%
C n/a
D 27.9%

Potassium benzoate Chemical Properties

Molecular Structure of Potassium benzoate (CAS NO.582-25-2):

IUPAC Name: Potassium benzoate
Canonical SMILES: C1=CC=C(C=C1)C(=O)[O-].[K+]
InChI: InChI=1S/C7H6O2.K/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1
InChIKey: XAEFZNCEHLXOMS-UHFFFAOYSA-M
Molecular Weight: 160.2117 [g/mol]
Molecular Formula: C7H5KO2
H-Bond Donor: 0
H-Bond Acceptor: 2 
EINECS: 209-481-3
Appearance: White solid
Solubility: soluble in ethanol; slightly soluble in methanol; insoluble in ether
Density: 1.5 g/cm3
Melting Point: >300 °C
Sensitive: Hygroscopic 
Flash Point: 111.4 °C
Enthalpy of Vaporization: 51.4 kJ/mol
Boiling Point: 249.3 °C at 760 mmHg
Vapour Pressure: 0.0122 mmHg at 25 °C
Classification Code: Pharmaceutic aid [preservative]

Potassium benzoate Uses

 Potassium benzoate (CAS NO.582-25-2) is a food preservative that inhibits the growth of mold, yeast and some bacteria. It works best in low-pH products, below 4.5, where it exists as benzoic acid. Potassium benzoate is also used as the whistle in many fireworks.

Potassium benzoate Production

Methods:1
By potassium bicarbonate solution and acid derived.
Methods:2
Remand from the bicarbonate solution and benzoic acid derived.

Potassium benzoate Safety Profile

Combustible when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes.
Safety Information of Potassium benzoate (CAS NO.582-25-2):
Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 1
F: 3
TSCA: No

Potassium benzoate Specification

 Potassium benzoate (CAS NO.582-25-2), its Synonyms are Benzoic acid, potassium salt ; Benzoic acid, potassium salt (1:1) .

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