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Sodium benzoate

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Sodium benzoate Specification

Density
1.44 Gram per cubic centimeter(g/cm3)

Appearance
White crystalline powder

Solubility
Soluble in Water

Molecular Weight
144.11 g/mol

Odour
Odourless

Ph Level
Around 8 (1% aqueous solution)

Storage Instructions
Store in a cool, dry place, away from moisture and direct sunlight

Chemical Name
Sodium Benzoate

Other Names
Benzoate of Soda

Classification
Preservative

CAS No
532-32-1

Type
Food Grade

Application
Food & Beverage, Pharmaceuticals, Cosmetics

Application Method
Direct Addition

Raw Material
Benzoic Acid and Sodium Hydroxide

Physical State
Powder/Granular

Usage
Used as a preservative to extend shelf life and inhibit microbial growth

Shelf Life
2 Years

Purity(%)
99%

Best Before
24 Months from date of manufacture

Bulk Density
0.75-0.95 g/cm

Melting Point
300 C (Decomposes)

Lead Content
Less than 2 ppm

Moisture Content
0.5% Max

Stability
Stable under recommended storage conditions

E Number
E211

Incompatibility
Strong oxidizing agents

Toxicity
Low if used within recommended limits

Assay
99.0%

Packing Type
Bag or Drum

Boiling Point
Not applicable (decomposes before boiling)

Transport Information
Non-hazardous

About Sodium benzoate

Sodium benzoate is a substance which has the chemical formula NaC7H5O2. It is a widely used food preservative, with an E number of E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.

Preservative

Sodium benzoate is a preservative, with the E number E211. It is most widely used in acidic foods such as salad dressings (i.e. acetic acid in vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (acetic acid), condiments and frogurt toppings. It is also used as a preservative in medicines and cosmetics.[5][6] Under these conditions it is converted into benzoic acid (E210), which is bacteriostatic and fungistatic. Benzoic acid is generally not used directly due to its poor water solubility. Concentration as a food preservative is limited by the FDA in the U.S. to 0.1% by weight.Sodium benzoate is also allowed as an animal food additive at up to 0.1%, according to AFCO's official publication. Sodium benzoate has been replaced by potassium sorbate in the majority of soft drinks in the United Kingdom.

Pharmaceutical applications

Sodium benzoate is used as a treatment for urea cycle disorders due to its ability to bind amino acids.This leads to excretion of these amino acids and a decrease in ammonia levels. Recent research shows that sodium benzoate may be beneficial as an add-on therapy (1 gram/day) in schizophrenia.Total Positive and Negative Syndrome Scale scores dropped by 21% compared to placebo.

Sodium benzoate, along with phenylbutyrate, is used to treat hyperammonemia.

Other uses

Sodium benzoate is also used in fireworks as a fuel in whistle mix, a powder that emits a whistling noise when compressed into a tube and ignited.

Powerful Preservative for Multiple Industries

Sodium benzoate is recognized globally as a reliable preservative, essential for maintaining product quality in the food, beverage, pharmaceutical, and cosmetic sectors. Its effectiveness at inhibiting the growth of bacteria, yeast, and mold makes it a popular choice for manufacturers looking to extend product shelf life while ensuring consumer safety. The substance is easy to handle, non-hazardous for transport, and complies with international standards.

Consistent Quality and Easy Application

With an assay of at least 99% purity and minimal lead content, sodium benzoate meets stringent quality requirements. The product is supplied in the form of a free-flowing white crystalline powder or granules, ensuring ease of handling during direct addition processes. Its high solubility in water allows for thorough mixing and uniform preservation in a wide variety of applications, guaranteeing effectiveness across food, beverage, and personal care products.

FAQs of Sodium benzoate:

Q: How is sodium benzoate typically used in food and beverage products?

A: Sodium benzoate is added directly to food and beverage products as a preservative. Its primary role is to inhibit the growth of bacteria, yeast, and mold, thus extending the shelf life of the items it is added to. It is most effective in acidic environments and is widely used in soft drinks, fruit juices, pickles, and condiments.

Q: What are the main benefits of using sodium benzoate as a preservative?

A: Sodium benzoate offers effective microbial inhibition, prolonging the shelf life and freshness of products. It maintains product safety by preventing spoilage, with low toxicity when used within recommended limits. Additionally, it is versatile, stable, easy to handle, and highly soluble in water for even distribution in formulations.

Q: When should sodium benzoate be added during the manufacturing process?

A: Sodium benzoate is generally added during the formulation or blending stage, before packaging. Due to its high solubility, it disperses uniformly when mixed with liquid or powder mixtures, ensuring effective preservation throughout the product.

Q: Where should sodium benzoate be stored for optimal stability?

A: For maximum stability, sodium benzoate should be stored in a cool, dry place, away from moisture and direct sunlight. Following these storage guidelines helps maintain its efficacy over its two-year shelf life and prevents premature decomposition or clumping.

Q: What precautions need to be considered regarding sodium benzoates incompatibility and handling?

A: Sodium benzoate should not be mixed with strong oxidizing agents, as this can cause unwanted chemical reactions. While the product is non-hazardous for transport, standard precautions such as wearing gloves and avoiding inhalation of dust are advisable during handling.

Q: How does sodium benzoate benefit pharmaceutical and cosmetic applications?

A: In pharmaceuticals and cosmetics, sodium benzoate acts as a preservative to inhibit microbial growth, ensuring product safety and longevity. Its broad-spectrum activity and low odor make it suitable for formulations such as syrups, ointments, creams, and lotions, where preservation without impacting scent or texture is essential.

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