Sodium Benzoate

CAS No: 532-32-1
E No: E211
Einecs No: 208-534-8
HS Code: 29163100
Molecular Formula: C7H5NaO2
Molecular Weight: 144.105 g/mol

Brief Introduction
1.Sodium Benzoate Introduction
2.Sodium Benzoate Index of technology in A.M FOODCHEM company
3.Sodium Benzoate Safety
4.Sodium benzoate side Effect
5.Sodium benzoate in food
6.1) Appearance
6.2) Sodium Benzoate CAS No
6.4) FEMA No
6.5) Sodium Benzoate formula
6.6) Sodium Benzoate structure
6.7) Sodium Benzoate boiling point
6.8) Molar Mass


Intro to Sodium Benzoate

Sodium benzoate is a common food preservative and is the sodium salt of benzoic acid. Sodium benzoate is synthesized from sodium hydroxide and benzoic acid. As in food, benzoic acid can play a role in a free state, and it is mainly added to acidic foods to enhance its flavor, and has the effect of preventing deterioration and sourness and prolonging the shelf life.

Sodium Benzoate Index of technology

Identification Passes test benzoate ,passes test for sodium
Appearance Free flowing white powder
Hazardous materials (glass ,hard plastic ,metal.word and stone) Absent
Readily carbonizable substances Passes test
Readily oxidixable substances Passes test
Content 99.0% ~ 100.5%
Loss on drying =<1.5%
Acidity & Alkalinity 0.2 ml
Water solution test Clear
Heavy metals (as PB) =<10 ppm
Arsenic =<3 ppm
Chlorides =< 200 ppm
Sulfate =< 0.10%
Carburet Meets the requirement
Oxide Meets the requirement
Total chloride =< 300 PPM
Colour of sulution Y6
Phthalic acid Meets the requirement

Sodium Benzoate Safety

At present, sodium benzoate is a food preservative allowed in China’s GB2760, which shows that the Health Commission has recognized the safety of sodium benzoate in food at this stage. The US FDA stipulates that the content of sodium benzoate in food shall not exceed 0.1% (by weight) in Chemicalbook. A study by the International Chemical Safety Agency found that daily intake of 647-835 mg/kg body weight of sodium benzoate will not have a negative effect on health. Investigations have shown that excessive consumption of benzoic acid and its salts in the human body will cause metabolic dysfunction in the liver, increased blood pressure, abnormal heart and kidney functions, and even cause muscle acidosis, fainting, and asthma. Its application scope is shrinking day by day. Some countries such as Japan have stopped the production of sodium benzoate and imposed restrictions on its use.

Sodium Benzoate Side Effect

Category: Toxic
Irritation data: skin-human 10%/1 hour positive
Toxicity classification: poisoning
Acute toxicity: oral-rat LD50 4070 mg/kg; oral-mouse LD50: 1600 mg/m3/4 hours
Flammability and hazard characteristics: combustible, the fire field emits pungent irritating smoke containing sodium oxide
Extinguishing agent: water, carbon dioxide, dry powder, sand
Toxicity protection
Protective measures: low toxicity. The limit applied to food is 0.1%, and it is not allowed to be used in edible meat and vitamin B1. See also “benzoic acid”.

Storage and transportation characteristics of sodium benzoate

The warehouse is low temperature, ventilated and dry.

Sodium Benzoate In Food

Sodium benzoate is an acidic preservative that has a better antiseptic effect in acidic environments. It is a very commonly used food preservative and has the effect of preventing deterioration and acidity and prolonging the shelf life.

Sodium benzoate is mostly white powder, odorless or slightly benzoin smell, slightly sweet and astringent; easily soluble in water (normal temperature) about 53.0g/100ml, pH is about 8; sodium benzoate is also an acidic preservative, in alkali There is no bactericidal and antibacterial effect in the sexual medium; the best antiseptic pH is 2.5-4.0, and the bactericidal effect of 5% solution at pH 5.0 is not very good.


Appearance: White Powder

CAS No.:532-32-1


FEMA No.:3025

Sodium Benzoate formula:C7H5Na O2

Sodium Benzoate structure:

Sodium Benzoate boiling point:249℃

Sodium Benzoate molar mass: 144g/mol