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Sodium benzoate

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Sodium benzoate is a widely used ingredient in cosmetics, personal care, and skincare formulations. Depending on its function, it may serve as a moisturizer, preservative, emulsifier, or active ingredient to enhance the overall effectiveness and performance of a product.

Sodium benzoate (Wikipedia)

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.

Sodium benzoate
Sodium benzoate
Sodium benzoate
Powder of sodium benzoate
Powder of sodium benzoate
Ball-and-stick model of packing in the crystal structure
Names
Preferred IUPAC name
Sodium benzoate
Other names
  • E211
  • benzoate of soda
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.007.760 Edit this at Wikidata
E number E211 (preservatives)
RTECS number
  • DH6650000
UNII
  • InChI=1S/C7H6O2.Na/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1 checkY
    Key: WXMKPNITSTVMEF-UHFFFAOYSA-M checkY
  • InChI=1/C7H6O2.Na/c8-7(9)6-4-2-1-3-5-6;/h1-5H,(H,8,9);/q;+1/p-1
    Key: WXMKPNITSTVMEF-REWHXWOFAY
  • [Na+].[O-]C(=O)c1ccccc1
Properties
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)
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)
Pharmacology
A16AX11 (WHO)
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H319
P305+P351+P338
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
1
0
Flash point 100 °C (212 °F; 373 K)
500 °C (932 °F; 773 K)
Lethal dose or concentration (LD, LC):
4100 mg/kg (oral, rat)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
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