PharmaceuticalsMineral FortifiersSpeciality ChemicalsSodium Methyl Hydroxybenzoate BP


Sodium Methyl Hydroxybenzoate BP

Sodium methylparaben (sodium methyl para-hydroxybenzoate) is a compound with formula Na(CH3(C6H4COO)O). It is the sodium salt of methylparaben.


It is a food additive with the E number E219 which is used as a preservative.


Product Name: Sodium Methyl Hydroxybenzoate
Molecular formula: C8H7NaO3
Molecular weight: 174.1g/mol
CAS No.: 5026-62-0



Test Specification
Character It occurs as a white or almost white, hygroscopic crystalline powder.

Test A

Test B

Test C

Test D


  1. Specified test.
  2. Infrared Absorption Spectrophotometry
  3. Thin Layer Chromatography
  4. It gives reactions of sodium
Solubility Freely soluble in water, sparingly soluble in ethanol (96%), practically insoluble in methylene chloride.
Appearance of solution Solution, examined immediately after preparation, is clear and not more intensely colored than reference solution BY6
pH 9.5 to 10.5
Related substances-

a. Correction factor


b. Impurity A

c. Unspecified impurities

d. Sum of impurities other than A


  1. for the calculation of content, multiply the peak area of impurity A by 1.4
  2. Not more than 3.0 %
  3. Not more than 0.5 %


  1. Not more than 1.0 %
Chlorides Not more than 350 ppm
Sulfates Not more than 300 ppm
Heavy metals Not more than 10 ppm
Water Not more than 5.0 %
Assay Not less than 95.0% and not more than 102.0% (anhydrous substance).


Shelf life, Storage and Packing

It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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