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.
Introduction
Appearance:White powder/granular
Molecular formula: 2(C3H6O2)CA
Molecular weight: 186.22
CAS No.: 4075-81-4
HS No.: 29163100.90
FEMA No.: 3025
EINECS No.:223-795-8
Function : Preservative,brewing,dyes.

Technical Specification
ITEM Specification
Assay99.0% Min.
Loss on drying1.5% Max.
Chloride0.02% Max.
Sulfate0.10% Max.
Chloride Compound0.03% Max.
Heavy metals10 ppm Max.
Acidity or Alkalinity0.2ml/g Max.
Arsenic (As)2 ppm Max.
Readily carbonisable SubstancesMeets the requirements
Clarity of solutionTransparent
Colour of solutionY6
Benzene(ug per g)2 ug Max.
Chloroform(ug per g)60 ug Max.
1,4-Dioxane(ug per g)380 ug Max.
Methylene chloride(ug per g)600 ug Max.

Application
Sodium benzoate is a good Preservative, used in acidic foods and products to control bacteria, mold, yeasts, and other microbes. It interferes with their ability to make energy. And used in medicine,tobacco,plating,printing and dyeing.
Packing
25 kg/woven bag or kraft paper bag

Storage and Transportation
Stored in dry, draughty and clean warehouse; protect against dampness and heating;kept away from toxic articles, handle with care, protect against damage to packing. cheap Preservatives
website:http://www.brilliantplant.com/food-additives/preservatives/