How to use sodium benzoate

  Identification:

CAS No.532-32-1

Molecular Formula:C₆H₅CO₂NA

Application:

1. Antiseptic and antimicrobial mainly used in food, medicine, cosmetics, toothpaste, perfumery, tobacco and feed industry
2. Antitrust liquid for the cooling system of automobile
3.Anticorrosive for metal

Specification:

ITEMS OF ANALYSIS	SPECIFICATION	RESULTS	Testing method
APPEARANCE:	FREE FLOWING WHITE POWDER	PASSED	IN HOUSE #PSB01
ASSAY (%):	99.00-100.50	99.70	GB1902-2005
LOSS ON DRYING(%):	1.5MAX	0.90	GB/T 6678-2003. 7.6
(1:10)COLOR OF SOLUTION (HAZEN):	20MAX	QUALIFIED	GB/T3134
APPEARANCE OF SOLUTION:	PASS	QUALIFIED	GB1902-2005
OXIDIZABLE SUBSTANCE EXPERIMENT:	PASS	QUALIFIED	GB1902-2005
ACIDITY AND ALKALINITY:	PASS	QUALIFIED	GB1902-2005
HEAVY METAL (AS Pb) (PPM):	10MAX	6	GB/T5009.74
ARSENIC(As) (PPM):	2MAX	1.05	GB/T5009.76
CHLORIDE (PPM):	300MAX	225	GB1902-2005
PHTHALIC ACID:	PASS	300	GB1902-2005
ORGANIC VOLATILE IMPURITIES:	IN CONFORMITY WITH THE REGULATIONS	QUALIFIED	GB1902-2005
CONCLUSION:	CONFORM TO BP GRADE

The usage of sodium benzoate varies depending on its application fields and specific products. Below are some common methods for using sodium benzoate:

I. Food Industry

1. Dissolving and Adding:

   • Generally, sodium benzoate is first dissolved in an appropriate amount of water and then uniformly added to food. During the dissolving process, attention should be paid to the solubility of sodium benzoate as it changes with temperature to ensure complete dissolution.
   • In beverages such as sodas and fruit juices, sodium benzoate is usually added during the syrup preparation stage. This involves dissolving sugar, boiling, and filtering it before adding sodium benzoate while stirring. It can also be added during sugar dissolution. After sodium benzoate is fully dissolved, suspending agents and citric acid can be added sequentially. It should be noted that sodium benzoate, citric acid, and suspending agents must be added separately, especially sodium benzoate and citric acid, as simultaneous addition can result in precipitate formation.
   • In condiments such as soy sauce, sodium benzoate is typically added during the heat sterilization process. Raw soy sauce is placed in a sterilization device, and sodium benzoate is added when the sterilization temperature (usually between 65°C and 75°C) is reached. Sodium benzoate can be dissolved in hot water or nearly 80°C triple-filtered oil before addition.

2. Dosage Control:

   • According to relevant regulations in China, the maximum usage of sodium benzoate in food must comply with standards. For example, the maximum usage in carbonated beverages is 0.2g/kg, and in soy sauce and sauces, it is 1.0g/kg.
   • For infant food, special attention should be paid to the additional amount of sodium benzoate to ensure it does not exceed safety limits.

II. Pharmaceutical Industry

1. Preservation and Stabilization:

   • Sodium benzoate is commonly used as a preservative in the pharmaceutical industry to ensure drugs remain sterile during their shelf life.
   • It can also act as a stabilizer to improve drug stability.

2. Dosage and Administration:

   • The dosage of sodium benzoate in drugs needs to be determined based on the specific drug formulation and production process.
   • Generally, its addition should not exceed 0.3% of the total drug mass.
   • When used, ensure that sodium benzoate is uniformly mixed with other drug components.

III. Industrial Applications

1. Preservation and Protection:

   • In industrial products such as paints and plastics, sodium benzoate can provide preservation and protection.
   • It can also be used in various daily use items, such as toothpaste, sealants, pastes, and adhesives, as a preservative.

2. Concentration and Method of Use:

   • In industrial applications, the concentration and method of using sodium benzoate will be determined based on specific product needs and relevant industry standards.
   • Generally, ensure that sodium benzoate is uniformly dispersed in the product to achieve the best preservation effect.

IV. Precautions

1. Stay Informed about Regulatory Changes:

   • As scientific and technological advancements occur and consumer concerns about health increase, relevant regulations on the use of additives such as sodium benzoate may change.
   • Therefore, before use, stay informed about the latest regulatory requirements to ensure compliant use.

2. Research on Alternatives:

   • Although sodium benzoate has widespread applications in multiple fields, to better meet consumer demands for health and safety, research is continuously exploring and developing new alternatives.
   • In the future, there may be more safe and efficient preservatives to replace sodium benzoate.

In summary, the usage of sodium benzoate varies depending on its application fields and specific products. When using it, strictly comply with relevant regulations and standards to ensure safe and compliant use of sodium benzoate.