Sodium Benzoate

Sodium benzoate also known as benzoate of soda is the sodium salt of benzoic acid, widely used as a food preservative (with an E number of E211) and a pickling agent. It appears as a white crystalline chemical with the formula C6H5COONa.

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Application

Benzoate preservatives applications in foods, drugs and personal products are well established. It is also widely as an intermediate for chemicals, alkyd resins, polyesters, plasticizers, dyestuffs, preservatives, and rubber activators and retardants. Benzoic Acid is a diverting agent in crude oil recovery applications.

Chemical formula

C7H5NaO2

Molar mass

144.105 g·mol−1

Appearance

white or colourless crystalline powder

Odor

odorless

Density

1.497 g/cm3

Melting Point

410 °C (770 °F; 683 K)

Soluibility in water

62.65 g/100 mL (0 °C)
62.84 g/100 mL (15 °C)
62.87 g/100 mL (30 °C)
74.2 g/100 mL (100 °C)

Solubility

soluble in liquid ammonia, pyridine

Solubility in methanol

8.22 g/100 g (15 °C)
7.55 g/100 g (66.2 °C)

Solubility in ethanol

2.3 g/100 g (25 °C)
8.3 g/100 g (78 °C)

Solubility in 1,4-Dioxane

0.818 mg/kg (25 °C)

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