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| Catalog Number | CI-HC-0202 |
| Product Name | Sodium Benzoate |
| CAS | 532-32-1 |
| Structure |  |
| Synonyms | Benzoic acid, sodium salt |
| Description | Sodium benzoate is used in a wide variety of cosmetics and personal care products where it acts as a corrosion inhibitor, fragrance ingredient, and preservative. As a preservative, sodium benzoate is primarily an anti-fungal agent but also has some effectiveness against bacteria. |
| IUPAC Name | Sodium;benzoate |
| Molecular Weight | 144.1 g/mol |
| Molecular Formula | C7H5NaO2 |
| Canonical SMILES | C1=CC=C(C=C1)C(=O)[O-].[Na+] |
| InChI | WXMKPNITSTVMEF-UHFFFAOYSA-M |
| InChI Key | InChI=1S/C7H6O2.Na/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1 |
| Melting Point | >300 °C(lit.) |
| Flash Point | 111.4ºC |
| Density | 1.44 g/mL |
| Appearance | white, odorless, crystalline powder or granules |
| Application | 1. Food Preservative: Sodium benzoate is commonly used as a food preservative to prevent bacterial growth and extends the shelf life of food products. 2. Cosmetics and Personal Care: It is widely used in cosmetics, shampoos, and other personal care products as a preservative to prevent the growth of bacteria, yeasts, and molds. 3. Pharmaceutical Industry: Sodium benzoate is used as a preservative in many pharmaceutical products such as nasal sprays, injectable drugs, and topical creams. 4. Beverages: It is used as a food preservative in carbonated beverages, fruit juices, and other soft drinks to preserve the freshness and taste of products. 5. Industrial Applications: Sodium benzoate is used as a corrosion inhibitor and as a chemical intermediate in the production of dyes and other industrial products. |
| Features And Benefits | 1. Preservative 2. Antifungal agent 3. Antimicrobial agent 4. pH stabilizer 5. Safe for topical use. |
| HS Code | 4002191900 |
| pH | 7.0-8.5 (1M, H2O, 25°C) |
Sodium Benzoate is a widely recognized preservative, derived as the sodium salt of benzoic acid, a compound occurring naturally in certain berries. This ingredient is esteemed for its ability to prevent spoilage by inhibiting the growth of microbes and fungi, making it suitable for use in a variety of food and personal care products. Within the realm of skincare and haircare, Sodium Benzoate extends product shelf life while delivering antimicrobial benefits in formulations aimed at combating acne, skin infections, and dandruff. Approved by the FDA as a Generally Recognized As Safe (GRAS) substance, it is effective across skin, eye, lip, and hair care items, performing optimally in products with an acidic pH below 6.5 to target bacteria, yeast, and mold. Its good solubility in water enhances its suitability for water-based formulations, and it synergizes well with other preservatives such as benzyl alcohol, potassium sorbate, and glycols, enhancing their efficacy while minimizing required concentrations. Beyond its preservative capabilities, Sodium Benzoate acts as a potent antioxidant, shielding cell membranes and DNA from oxidative damage, and when paired with caffeine, offers significant protection against UVB radiation. This eco-friendly, biodegradable compound is certified by ECOCERT, COSMOS, and Ecolabel, ensuring its trusted use in a wide range of personal care applications with reliable and safe preservation mechanisms.
What is sodium benzoate?
Sodium benzoate is the salt of benzoic acid that is found naturally in foods like cranberries, apricots, mushrooms, and honey.
What are some sources of sodium benzoate?
Sodium benzoate is found naturally in cranberries, prunes, plums, apples, and other fruits.
What is the role of sodium benzoate in cosmetics?
Sodium benzoate is used as a corrosion inhibitor, fragrance ingredient, and preservative in cosmetics and personal care products.
What is sodium benzoate primarily effective against as a preservative?
Sodium benzoate is primarily effective against fungal growth, but also has some effectiveness against bacteria.
What other preservative is sodium benzoate often combined with in low pH products?
Sodium benzoate is often combined with potassium sorbate in low pH products to benefit from their synergistic effects against yeast and mold.
Is sodium benzoate a broad-spectrum preservative for cosmetic use?
No, sodium benzoate is not a broad-spectrum preservative and should be combined with other preservatives in cosmetic products.
Is sodium benzoate considered safe for consumption?
Yes, the FDA has designated sodium benzoate as a "generally recognized as safe" ingredient. The amount of sodium benzoate in foods is so low that it is deemed safe by regulatory bodies.
Can a reaction occur between sodium benzoate and vitamin C in skin care products?
There is a potential concern for a reaction between sodium benzoate and vitamin C in skin care products. However, formulating products with a high concentration of vitamin C and a low concentration of sodium benzoate can prevent the formation of benzene.
What pH range is generally safer in terms of preventing benzene formation?
Products with a pH of 3 or higher are generally safer in terms of preventing benzene formation.
Is sodium benzoate a reliable and safe ingredient for consumers?
Sodium benzoate is considered one of the most reliable ingredients on the market, and when used within approved concentrations, it is safe for consumers.
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