Click image to view original image
Sodium benzoate is a salt of benzoic acid that is found naturally in cranberries, prunes, plums, apples, and other fruits. It is soluble in water and works against yeast and bacteria.
MF.: NaC7H5O2
CAS No: 532-32-1.
Product testing standard
|
TEST ITEM |
STANDARD SPECIFICATIONS |
|
CHARACTERS |
A WHITE, ALMOST ODOURLESS, CRYSTALLINE POWDER OR PRILL |
|
APPEARANCE OF SOLUTION |
CLARITY |
|
COLOUR |
Y6 |
|
ACIDITY OR ALKALINITY ML/G |
0.2MAX |
|
IonISED CHLORINE |
200 PPM MAX |
|
TOTAL CHLORIDE |
300 PPM MAX |
|
HEAVY metaLS(IN TERMS OF LEAD) |
10 PPM MAX |
|
ARSENIC: |
3 ppm MAX |
|
LEAD: |
2 ppm MAX |
|
MERCURY: |
1 ppm MAX |
|
READILY OXIDISABLE SUBSTANCES |
POSITIVE |
|
POLYCYCLIC ACIDS |
POSITIVE |
|
LOSS ON DRYING % (m/m): |
1.5% MAX |
|
ASSAY % (m/m): |
99.0%-100.5% |
Sodium benzoate used as a preservative in food
Sodium benzoate is a preservative commonly used in fruit pies, jams, beverages, salads, relishes, and sauerkraut—foods that have an acidic pH. It also naturally occurs in and some spices such as cloves and cinnamon. Soft drinks are the number one source of sodium benzoate in the diet.
As chemical preservatives, sodium benzoate is frequently used in processed foods to prevent the growth of bacteria, yeast, or other unwanted microorganisms that could spoil your food. When sodium benzoate is combined with water, benzoic acid is produced. Benzoic acid is the active form of the preservative—the form that protects foods.
Other usages of sodium benzoate
Sodium benzoate is used mainly as a food preservative but can also be found in other products such as cosmetics and pharmaceuticals 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. It is not a broad-spectrum preservative for cosmetic use and should be combined with other preservatives. Sodium benzoate is often combined with potassium sorbate in low pH products in order to benefit from the ingredients’ synergistic effects against yeast and mold. When combined with caffeine, it can have a sunscreen effect and provide UVB protection with antioxidant activity.
ZANCHENG LIFE SCIENCES is stably supplying sodium benzoate with high quality both at home and abroad. We won a long business relationship with our profession and dedication.
