Description
Specifications Table
Product Name – Sodium benzoate LR
Quantity/Pack Size – 500 g
Form – Powder
Grade – LR (Laboratory Reagent)
Application – Preservative, microbiology, food science
Product Overview
Sodium benzoate LR is a white, odorless powder widely recognized for its antimicrobial properties and stability in various applications. This laboratory-grade chemical is synthesized from benzoic acid and sodium hydroxide, ensuring high purity and consistent performance. Its solubility in water makes it an excellent choice for aqueous solutions, while its effectiveness as a preservative extends shelf life in food and beverage formulations. The LR grade designation confirms its suitability for general laboratory use, including microbiological studies, chemical analysis, and educational experiments. Sodium benzoate functions by inhibiting the growth of mold, yeast, and some bacteria, making it a valuable additive in both research and industrial settings. The compound remains stable under normal storage conditions, though it should be kept in a cool, dry place away from direct sunlight to maintain its efficacy. As a non-toxic and cost-effective preservative, sodium benzoate LR offers a reliable solution for applications requiring microbial control without altering the sensory properties of the final product.
FAQs
1. What is the solubility of sodium benzoate LR in water?
Sodium benzoate LR is highly soluble in water, with a solubility of approximately 55 g per 100 ml at room temperature, making it easy to incorporate into aqueous solutions.
2. Can sodium benzoate LR be used in acidic formulations?
Yes, sodium benzoate is most effective in acidic conditions (pH below 4.5), where it converts to benzoic acid, enhancing its preservative properties against microbial growth.
3. What is the difference between LR grade and AR grade sodium benzoate?
LR (Laboratory Reagent) grade is suitable for general lab applications, while AR (Analytical Reagent) grade offers higher purity and is used for precise analytical work and sensitive experiments.
4. How should sodium benzoate LR be stored for long-term use?
Store sodium benzoate LR in a tightly sealed container in a cool, dry place, away from moisture and direct sunlight, to prevent clumping and maintain its stability.
5. Is sodium benzoate LR compatible with other common preservatives?
Yes, it can be combined with preservatives like potassium sorbate for broader antimicrobial coverage, but compatibility should be tested for specific formulations to avoid precipitation or reduced efficacy.
