Basic information
- Name:
Sodium benzoate
- CAS No.:
532-32-1
- Molecular Structure:
- Formula:
- C7H5NaO2
- Molecular Weight:
- 144.12
- Synonyms:
- Ucephan;FEMA Number 3025;Sobenate;Sodium Benzoate (food grade);FEMA No. 3025;Sodium benzoate (TN);Sodium benzoate solution;EPA Pesticide Chemical Code 009103;Benzoate of soda;Benzoic acid, sodium salt;Antimol;Sodium benzoate [USAN:JAN];Sodium benzoate (JP14/NF);Benzoan sodny [Czech];Benzoic acid,compounds,sodium salt;Benzoesaeure (na-salz) [German];Sodium Benzoic acid;Sodium Benzoate - BP98;
- EINECS:
- 208-534-8
- Density:
- 1,44 g/cm3
- Melting Point:
- >300 °C(lit.)
- Boiling Point:
- 249.3 °C at 760 mmHg
- Flash Point:
- 111.4 °C
- Solubility:
- H2O: 1 M at 20 °C, clear, colorless
- Appearance:
- white crystalline powder
- Hazard Symbols:
Xi- Risk Codes:
- 36/37/38-62-63-68
- Safety Description:
- 24/25-36-26 Details
- particular:
- particular
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Chemistry
IUPAC Name: Sodium benzoate
Synonyms of Sodium benzoate (CAS NO.532-32-1): Antimol ; Benzoan sodny ; Benzoate of soda ; Benzoate sodium ; Natrium benzoicum ; Sobenate
CAS NO: 532-32-1
Molecular Formula: C7H5NaO2
Molecular Weight: 144.1
Molecular Structure: 
EINECS: 208-534-8
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 1
Polar Surface Area: 37.3 Å2
Density: 1,44 g/cm3
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°
Melting point: >300 °C(lit.)
Storage temp: Store at RT.
Solubility: H2O: 1 M at 20 °C, clear, colorless
Stability: Stable, but may be moisture senstive. Incompatible with strong oxidizing agents, alkalis, mineral acids.
Product Categories: FOOD ADDITIVES;Food and Feed Additive;Food & Feed ADDITIVES;Food & Flavor Additives
SMILES: [Na+].[O-]C(=O)c1ccccc1
InChI: InChI=1/C7H6O2.Na/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1
InChIKey: WXMKPNITSTVMEF-REWHXWOFAY
Std. InChI: InChI=1S/C7H6O2.Na/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1
Std. InChIKey: WXMKPNITSTVMEF-UHFFFAOYSA-M
Uses
Sodium benzoate (CAS NO.532-32-1) is a preservative. It is bacteriostatic and fungistatic under acidic conditions. It is used most prevalently in acidic foods such as salad dressings (vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (vinegar), and condiments. Besides, it is also used in fireworks as a fuel in whistle mix, a powder which emits a whistling noise when compressed into a tube and ignited.
Production
Sodium benzoate is produced by the neutralization of benzoic acid with sodium hydroxide.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| dog | LD50 | oral | 2gm/kg (2000mg/kg) | FAO Nutrition Meetings Report Series. Vol. 53A, Pg. 34, 1974. | |
| frog | LDLo | subcutaneous | 100mg/kg (100mg/kg) | "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1313, 1935. | |
| guinea pig | LDLo | intraperitoneal | 1400mg/kg (1400mg/kg) | "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1313, 1935. | |
| guinea pig | LDLo | subcutaneous | 1gm/kg (1000mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 28(1), Pg. 45, 1963. | |
| mouse | LD50 | intramuscular | 2306mg/kg (2306mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 117, Pg. 307, 1956. | |
| mouse | LD50 | intravenous | 1440mg/kg (1440mg/kg) | Medicinal Chemistry, A Series of Reviews. Vol. 6, Pg. 290, 1963. | |
| mouse | LD50 | oral | 1600mg/kg (1600mg/kg) | BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(1), Pg. 75, 1986. |
| rabbit | LD50 | oral | 2gm/kg (2000mg/kg) | FAO Nutrition Meetings Report Series. Vol. 53A, Pg. 34, 1974. | |
| rabbit | LD50 | subcutaneous | 2gm/kg (2000mg/kg) | FAO Nutrition Meetings Report Series. Vol. 53A, Pg. 34, 1974. | |
| rat | LD50 | intravenous | 1714mg/kg (1714mg/kg) | BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Journal of the American Pharmaceutical Association, Scientific Edition. Vol. 31, Pg. 253, 1942. |
| rat | LD50 | oral | 4070mg/kg (4070mg/kg) | Journal of Industrial Hygiene and Toxicology. Vol. 30, Pg. 63, 1948. | |
| rat | LD50 | subcutaneous | 2gm/kg (2000mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 28(1), Pg. 45, 1963. |
Safety Profile
Safety Information about Sodium benzoate (CAS NO.532-32-1):
Hazard Codes: 
Xi
Risk Statements: 36/37/38-62-63-68
R36/37/38: Irritating to eyes, respiratory system and skin.
R62: Risk of impaired fertility.
R63: Possible risk of harm to the unborn child.
R68: Possible risk of irreversible effects.
Safety Statements: 24/25-36-26
S24/25: Avoid contact with skin and eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
WGK Germany: 1
HS Code: 29163100
Specification
General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam.
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Store in a cool, dry place. Store in a tightly closed container.