An acid-side preservative and rust inhibitor for water-based foods, beverages, and coatings. It preserves foods, beverages, and water-based products in an acidic pH range and inhibits rust and mildew.
▸Preservative: Preservative for foods, beverages, and water-based products at acidic pH.
▸Corrosion inhibitor: Rust and mildew inhibitor.
▸Coatings: Preservative in water-based paint.
▸Intermediate: Chemical intermediate, including dye manufacture.
▸Plastics: Nucleating agent for polyolefins.
Physical Properties
Physical Description
Dry Powder; Liquid; Pellets or Large Crystals; Dry Powder, Pellets or Large Crystals
Appearance
White, granules or crystalline powder
Odor
Odorless
Taste
Unpleasant, sweetish, saline taste
Boiling Point
>450 °C to <475 °C, decomposes with no boiling)
Melting Point
for benzoic acidMelting range of benzoic acid isolated by acidification and not recrystallised 121,5 °C to 123,5 °C, after drying in a sulphuric acid desiccator
Flash Point
>100 °C (>100 °C)
Solubility
1 g dissolves in 1.8 mL water, 1.4 mL boiling water, about 75 mL alcohol, 50 mL mixture of 47.5 mL alcohol and 3.7 mL water
Density
1.50 g/cu cm)
LogP
-2.27 (calculated)
Autoignition Temperature
>500 °C
pH
Aqueous solution is slightly alkaline to litmus, pH about 8
Surface Tension
72.9 mN/m at 20 °C in water at 1 g/L OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
HS / Tariff Classification
🌐Harmonized System (HS) Code — 6-digit international heading
2916.31
Chapter 29
Organic chemicals
Heading 29.16
Internationally harmonized (WCO HS)
Subheading 2916.31
6-digit international code — national tariff line adds further digits
Sodium benzoate (CAS 532-32-1) is the sodium salt of benzoic acid, used as a preservative and corrosion inhibitor. It preserves foods, beverages, and water-based products in an acidic pH range and inhibits rust and mildew. It also serves as a chemical intermediate.
Frequently Asked Questions
What is sodium benzoate used for?
Sodium benzoate (CAS 532-32-1), the sodium salt of benzoic acid, is used as a preservative for foods, beverages, and water-based products at acidic pH, and as a corrosion (rust and mildew) inhibitor. It also serves as a chemical intermediate, including in dye manufacture, and as a nucleating agent for polyolefins.
Are baking soda and sodium benzoate the same?
No. Baking soda is sodium bicarbonate (NaHCO3), an alkali salt used for leavening and neutralization. Sodium benzoate (C7H5NaO2) is the sodium salt of benzoic acid, used as a preservative and corrosion inhibitor. They are distinct chemicals with different CAS numbers and functions.
Is sodium benzoate the same as table salt?
No. Table salt is sodium chloride (NaCl). Sodium benzoate is the sodium salt of benzoic acid (C7H5NaO2, CAS 532-32-1); both contain sodium, but they are chemically different compounds with different uses. Sodium benzoate functions as a preservative, not a seasoning.
What is sodium benzoate made from?
Sodium benzoate is produced by neutralizing benzoic acid with a sodium source such as sodium hydroxide or sodium bicarbonate, yielding the sodium salt C7H5NaO2. It is supplied as a powder. See the SDS and CoA for grade and specification details.
What is the cost of sodium benzoate in bulk?
Bulk pricing depends on grade, packaging, and volume. We supply sodium benzoate powder in industrial quantities with CoA and SDS per lot; request a bulk quote for current pricing and lead time.
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.
