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Sodium Benzoate is the sodium salt of benzoic acid and is widely used as a preservative to inhibit yeasts, molds, and some bacteria in acidic foods, beverages, cosmetics, and pharmaceutical preparations.
Sodium Benzoate is valued because Sodium Benzoate provides strong preservation with low sensory impact at regulated use levels and Sodium Benzoate offers high water solubility for easy dosing in liquid systems.
Sodium Benzoate works best in acidic conditions where benzoic acid is present in the undissociated form, so Sodium Benzoate use requires pH control and formulation validation to achieve reliable shelf-life performance.
CAS Number: 532-32-1
EC Number: 208-534-8
Molecular Formula: C7H5NaO2
Molecular Weight: 144.11 g/mol
Synonyms: Sodium Benzoate, E211, Benzoic Acid Sodium Salt, Sodium Benzenecarboxylate, Sodium Benzoate Preservative, Sodium Benzoate Food Grade, Sodium Benzoate Powder, Sodium Benzoate Granular, Sodium Benzoate USP, Sodium Benzoate FCC, Sodium Benzoate E211, Sodium Benzoate Antimicrobial, Sodium Benzoate, Benzoic Acid Sodium Salt, Sodium Salt of Benzoic Acid, Benzoate of Soda, Sodium Benzenecarboxylate, Sodium Phenylcarboxylate, Sodium Monobenzoate, Benzoate Sodium, Sodium Benzoate FCC, Sodium Benzoate USP, Sodium Benzoate BP, Sodium Benzoate EP, Sodium Benzoate NF, Sodium Benzoate Food Grade, Sodium Benzoate Technical Grade, Sodium Benzoate Pharmaceutical Grade, Sodium Benzoate Industrial Grade, Sodium Benzoate Reagent, Sodium Benzoate Analytical Grade, Sodium Benzoate Laboratory Grade, Sodium Benzoate Pure, Sodium Benzoate Powder, Sodium Benzoate Granular, Sodium Benzoate White Powder, Sodium Benzoate Preservative, Sodium Benzoate Food Preservative, Sodium Benzoate Beverage Preservative, Sodium Benzoate Antimicrobial, Sodium Benzoate Antifungal, Sodium Benzoate Stabilizer, Sodium Benzoate Corrosion Inhibitor, Sodium Benzoate Feed Grade, Sodium Benzoate Feed Additive, Sodium Benzoate E211, E211, INS 211, Sodium Benzoate CAS 532-32-1, Sodium Benzoate C7H5NaO2, C7H5NaO2, NaC7H5O2, Sodium Benzoate NaC7H5O2, Sodium Benzoate Solution, Aqueous Sodium Benzoate, Benzoic Acid Monosodium Salt, Monosodium Benzoate, Sodium Benzoate, Benzoate de Sodium, Natrium Benzoate, Sodium Benzoate Preservative Grade, Sodium Benzoate High Purity, Sodium Benzoate Synthetic, Sodium Benzoate Additive Grade, Sodium Benzoate Odorless Grade, Sodium Benzoate Water Soluble, Sodium Benzoate Crystalline, Sodium Benzoate Fine Powder, Sodium Benzoate Food Additive, Sodium Benzoate Shelf Life Extender, Sodium Benzoate Mold Inhibitor, Sodium Benzoate Yeast Inhibitor, Sodium Benzoate Bacteriostatic Agent, Sodium Benzoate Acid Preservative, Sodium Benzoate Antioxidant Support, Sodium Benzoate Buffer Component, Sodium Benzoate pH Control Agent, Sodium Benzoate Cosmetic Grade, Sodium Benzoate Personal Care Grade, Sodium Benzoate Pharma Grade, Sodium Benzoate Tech Grade
APPLICATIONS
Sodium Benzoate is used in carbonated soft drinks to inhibit yeast and mold growth and improve shelf stability.
Sodium Benzoate is incorporated into fruit drinks and flavored beverages to prevent fermentation and spoilage in acidic systems.
Sodium Benzoate is used in beverage concentrates and syrups to protect against microbial growth during storage and distribution.
Sodium Benzoate is used in sauces and condiments such as ketchup to improve microbial stability and reduce spoilage risk.
Sodium Benzoate is incorporated into salad dressings to inhibit yeast growth in acidified emulsions.
Sodium Benzoate is used in pickles and vegetable brines to reduce spoilage in acidic preserved foods.
Sodium Benzoate is used in jams, jellies, and fruit preparations to inhibit yeast growth and extend shelf life after opening.
Sodium Benzoate is incorporated into fruit fillings and dessert toppings to reduce spoilage in high-sugar acidic systems.
Sodium Benzoate is used in fruit sauces to support preservation hurdles and stable storage.
Sodium Benzoate is used in bakery fillings and glazes to reduce yeast and mold growth in moist sweet systems.
Sodium Benzoate is incorporated into icing and fruit toppings to improve fungal stability in packaged products.
Sodium Benzoate is used in high-moisture bakery products to extend shelf life when pH allows effective preservation.
Sodium Benzoate is used in cosmetics and personal care as a preservative or preservative booster in compatible acidic formulations.
Sodium Benzoate is incorporated into lotions and creams where pH is controlled for preservative performance.
Sodium Benzoate is used in shampoos and cleansers in some markets as part of preservative systems compliant with local regulations.
Sodium Benzoate is used in pharmaceuticals as an antimicrobial preservative in syrups and oral liquids in compatible pH ranges.
Sodium Benzoate is incorporated into topical preparations to improve microbial stability and prevent spoilage during storage.
Sodium Benzoate is used in mouthwashes and oral liquids where preservation of aqueous systems is required.
Sodium Benzoate is used in fermented and acidified foods to control spoilage organisms where preservation does not conflict with desired live cultures.
Sodium Benzoate is incorporated into multi-hurdle preservation strategies alongside pH control, packaging, and sanitation.
Sodium Benzoate is used in shelf-life extension programs to reduce waste and spoilage returns in distribution chains.
Sodium Benzoate is used in industrial applications in some cases as a corrosion inhibitor component and preservative for water-based products.
Sodium Benzoate is incorporated into water-based formulations to help control microbial spoilage and maintain product stability.
Sodium Benzoate is used in specialty chemical products where benzoate salts provide functional benefits.
Sodium Benzoate is valued because Sodium Benzoate provides effective preservation with high water solubility and easy dosing, especially in acidic products where benzoic acid form provides antimicrobial activity.
Sodium Benzoate is used as a preservative in acidic foods and beverages.
Sodium Benzoate inhibits yeast and mold growth most effectively at low pH.
Sodium Benzoate helps extend shelf life in products prone to microbial spoilage.
Sodium Benzoate is used in carbonated soft drinks to control yeast spoilage.
Sodium Benzoate supports microbial stability in flavored sodas and sparkling beverages.
Sodium Benzoate helps reduce gas formation and off-flavors caused by yeast contamination.
Sodium Benzoate is used in fruit juices and juice drinks as an antimicrobial preservative.
Sodium Benzoate supports stability of juice blends with pH in the acidic range.
Sodium Benzoate helps maintain product quality during distribution and storage.
Sodium Benzoate is used in sports drinks and flavored waters in some formulations.
Sodium Benzoate supports preservation of low-calorie beverages with added flavors.
Sodium Benzoate helps prevent yeast growth that can cause haze and swelling.
Sodium Benzoate is used in iced tea and ready-to-drink tea products to inhibit microbial spoilage.
Sodium Benzoate supports shelf stability of sweetened tea beverages in acidic systems.
Sodium Benzoate helps reduce risk of fermentation during storage.
Sodium Benzoate is used in coffee-based ready-to-drink beverages with acidified profiles in some systems.
Sodium Benzoate supports preservation of flavored coffee drinks when pH is controlled.
Sodium Benzoate helps reduce yeast and mold spoilage in packaged beverages.
Sodium Benzoate is used in salad dressings and mayonnaise-type sauces with acidic formulations.
Sodium Benzoate supports control of yeast and mold growth in emulsified sauces.
Sodium Benzoate helps extend shelf life after opening in some products.
Sodium Benzoate is used in ketchup, barbecue sauce, and condiment sauces to inhibit spoilage organisms.
Sodium Benzoate supports preservation of tomato-based sauces with acidic pH.
Sodium Benzoate helps prevent surface mold growth and fermentation in condiments.
Sodium Benzoate is used in pickles and pickling brines to support microbial stability.
Sodium Benzoate supports protection of acidified vegetables from yeast spoilage.
Sodium Benzoate helps maintain clarity and flavor stability in brined products.
Sodium Benzoate is used in jams, jellies, and fruit spreads to inhibit molds and yeasts.
Sodium Benzoate supports shelf life extension in sweet, acidic preserves.
Sodium Benzoate helps reduce surface mold formation in opened jars in some systems.
Sodium Benzoate is used in syrups and flavored concentrates to prevent microbial growth.
Sodium Benzoate supports stability of beverage syrups during storage.
Sodium Benzoate helps prevent yeast fermentation in sugar-containing concentrates.
Sodium Benzoate is used in confectionery fillings and fruit preparations to control yeast spoilage.
Sodium Benzoate supports stability of acidic fruit fillings used in bakery and desserts.
Sodium Benzoate helps prevent gas formation and off-odors in fillings.
Sodium Benzoate is used in bakery products with high moisture and acidic components in some formulations.
Sodium Benzoate supports mold inhibition in certain packaged baked goods.
Sodium Benzoate helps extend shelf life when water activity and pH conditions allow.
Sodium Benzoate is used in tortillas and flatbreads in some markets to reduce mold growth.
Sodium Benzoate supports extended shelf life in packaged breads with suitable acidity.
Sodium Benzoate helps reduce spoilage returns in distribution chains.
Sodium Benzoate is used in fermented vegetable products and sauces to control surface yeasts.
Sodium Benzoate supports stability of acidic fermented sauces when post-processing contamination risk exists.
Sodium Benzoate helps reduce film yeast formation on product surfaces.
Sodium Benzoate is used in dairy-based beverages that are acidified and flavored in some systems.
Sodium Benzoate supports yeast and mold control in acidic dairy drinks.
Sodium Benzoate helps reduce spoilage risk when cold chain is imperfect.
Sodium Benzoate is used in cosmetics as a preservative in certain product types where permitted.
Sodium Benzoate supports microbial protection in water-based cosmetics with acidic pH.
Sodium Benzoate helps reduce growth of yeast and mold in creams and lotions.
Sodium Benzoate is used in rinse-off personal care products such as shampoos and body washes as part of preservative systems.
Sodium Benzoate supports broad preservation when combined with suitable co-preservatives.
Sodium Benzoate helps improve product safety by limiting microbial contamination during use.
Sodium Benzoate is used in facial cleansers and micellar waters with acidic pH in some formulations.
Sodium Benzoate supports preservation of low-oil water-based cleansing products.
Sodium Benzoate helps maintain clarity and odor stability during shelf life.
Sodium Benzoate is used in wet wipes and cleansing wipes as a preservative component in some systems.
Sodium Benzoate supports microbial control in wipe liquids with controlled pH.
Sodium Benzoate helps reduce contamination risk in multi-use wipe packs.
Sodium Benzoate is used in oral care products such as mouthwashes and gels as a preservative in some formulations.
Sodium Benzoate supports microbial stability in water-based oral products.
Sodium Benzoate helps maintain product quality during repeated consumer use.
Sodium Benzoate is used in pharmaceutical syrups and liquid medicines as a preservative where permitted.
Sodium Benzoate supports microbial control in sweetened oral liquid formulations.
Sodium Benzoate helps maintain stability of drug products during shelf life.
Sodium Benzoate is used in cough syrups and throat sprays as an antimicrobial preservative in some products.
Sodium Benzoate supports protection against microbial contamination in aqueous dosage forms.
Sodium Benzoate helps maintain product safety during storage and use.
Sodium Benzoate is used in laboratory media and buffer systems to inhibit microbial growth in certain preparations.
Sodium Benzoate supports preservation of acidic aqueous solutions in lab settings.
Sodium Benzoate helps reduce contamination in stored reagents.
DESCRIPTION
Sodium Benzoate is a white crystalline powder or granules that dissolves readily in water, and Sodium Benzoate is commonly used in liquids because it is easier to dose than benzoic acid.
Sodium Benzoate functions by generating benzoic acid in solution, and preservative effectiveness increases at lower pH where more undissociated benzoic acid is present.
Sodium Benzoate inhibits microbial growth by interfering with cell membrane transport and internal pH balance, and Sodium Benzoate is especially effective against yeasts and molds in acidic foods and beverages.
Sodium Benzoate has limited effectiveness against many bacteria unless combined with other hurdles, so Sodium Benzoate is often used with low pH, refrigeration, and good hygiene.
Sodium Benzoate should be dosed carefully because excessive Sodium Benzoate can affect taste and can interfere with fermentation where live cultures are desired.
Sodium Benzoate stability is generally good under normal conditions, but Sodium Benzoate formulations should consider oxidative conditions and packaging to maintain quality.
Sodium Benzoate should be stored in tightly closed containers in a cool, dry place protected from moisture and contamination.
Sodium Benzoate dust can irritate eyes and respiratory tract, so dust control and appropriate PPE are recommended during handling.
Sodium Benzoate should be used according to applicable food additive, cosmetic, and pharmaceutical regulations for the target market.
Sodium Benzoate is the sodium salt of benzoic acid and is widely used as a preservative in acidic systems.
Sodium Benzoate is typically a white, odorless crystalline powder with good water solubility.
Sodium Benzoate is most effective against yeasts and molds and shows better performance at lower pH.
Sodium Benzoate acts mainly through benzoic acid in solution, because the undissociated acid form penetrates microbial cells.
Sodium Benzoate preservative efficacy depends on pH, water activity, sugar level, and presence of other preservatives.
Sodium Benzoate is commonly used in beverages, sauces, and fruit products where pH is controlled.
PROPERTIES
Chemical Formula: C7H5NaO2
Molecular Weight: 144.11 g/mol
Common Name: Sodium Benzoate
Chemical Type: Benzoate salt; preservative (E211)
Appearance: White crystalline powder or granules
Odor: Odorless
Solubility: Highly soluble in water; soluble in ethanol to a limited extent
pKa (benzoic acid): ~4.20 (typical; governs activity vs pH)
Preservative Activity: Strong in acidic systems; best performance at low pH
Stability: Stable under recommended storage; avoid strong oxidizers and contamination
Typical Use: Food preservative, beverage preservative, cosmetic preservative booster (market dependent)
Storage Temperature: 10–25°C, dry, tightly closed
Shelf Life: Typically 24–60 months in original sealed packaging (supplier dependent)
FIRST AID
Inhalation:
Move to fresh air if dust is inhaled.
Seek medical attention if respiratory irritation persists.
Avoid breathing dust during weighing and powder transfer.
Skin Contact:
Wash with soap and water after contact.
Remove contaminated clothing and wash before reuse.
Seek medical advice if irritation develops or persists.
Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists.
Ingestion:
Rinse mouth with water.
Seek medical attention if discomfort occurs or if a large amount is swallowed.
Never give anything by mouth to an unconscious person.
Note to Physicians:
Treat symptomatically.
No specific antidote is required.
Provide supportive care based on exposure route and symptoms.
HANDLING AND STORAGE
Handling:
Use appropriate PPE including gloves and safety glasses, and use dust protection as needed.
Avoid generating dust and avoid inhalation of fine powder.
Wash hands after handling and before eating, drinking, or smoking.
Ventilation:
Use local exhaust or general ventilation where dust may be generated.
Maintain good airflow during weighing, charging, and blending operations.
Minimize airborne particulate accumulation in enclosed areas.
Storage:
Store in tightly closed containers in a cool, dry place.
Protect from moisture to prevent caking and maintain free-flowing behavior.
Keep containers properly labeled and protected from contamination.
Spill and Leak Procedures:
Sweep up spilled material and avoid dust generation.
Collect into suitable containers for reuse or disposal according to local regulations.
Clean residues with wet wiping if needed to reduce airborne dust.
Handling Precautions:
Control pH and preservative system design because Sodium Benzoate effectiveness depends on formation of undissociated benzoic acid in acidic products.
Avoid using Sodium Benzoate in products where fermentation is desired unless dosing strategy is specifically controlled.
Rotate stock using FIFO practices to maintain consistent quality and predictable preservative performance.
