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Methyl-4-Hydroxybenzoate
  1. Methyl-4-Hydroxybenzoate

Methyl-4-Hydroxybenzoate

Original price was: ₹2,200.00.Current price is: ₹2,000.00.

Applications

Application. Methyl 4-hydroxybenzoate has antimicrobial characteristics and is used as preservative in pharmaceutical formulations and cosmetics. It can be combined with other parabens like propyl 4-hydroxybenzoate or ethyl 4-hydroxybenzoate.

Description

Methylparaben is a 4-hydroxybenzoate ester resulting from the formal condensation of the carboxy group of 4-hydroxybenzoic acid with methanol. It is the most frequently used antimicrobial preservative in cosmetics. It occurs naturally in several fruits, particularly in blueberries.

Preparation

The synthesis process comprises the steps of: adding p-hydroxybenzoic acid and methanol into a round-bottom flask according to the molar ratio of (1: 1.5)-(1: 4.0), and then adding 0.1-0.6g/ g of catalyst sodium hydrogen sulfate into the mixture; putting the round-bottom flask into a microwave oven;

Chemical Properties

Methyl-4-Hydroxybenzoate, also known as methyl paraben, is a chemical compound known for its antifungal and antibacterial properties, often utilized as a preservative in cosmetics, personal care products, and pharmaceuticals.

Definition

Methyl-4-Hydroxybenzoate, commonly known as methyl paraben, is an organic compound and ester of p-hydroxybenzoic acid, often utilized as a preservative in various consumer products to extend their shelf life and inhibit the growth of microbes.

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Description

Product Name Aluminium Chloride
CAS Number 99-76-3
Form Powder
Molecular Weight 152.15
Chemical Formula HOC6H4CO2CH3
Melting point 125-128 °C (lit.)
Boiling point 298.6 °C
Density 1,46g/cm
vapor pressure 0.000005 hPa (20 °C)
refractive index 1.4447 (estimate)
Flash point 280°C
storage temp room temp
solubility ethanol: soluble0.1M, clear, colorless
pka pKa 8.15(H2O,t =20.0) (Uncertain)
form Crystalline Powder
color White to almost white
PH 5.8 (H2O, 20°C) (saturated solution)
Odor odorless or faint char. odor, sl. burning taste
Water Solubility Slightly soluble in water.
FreezingPoint 131℃
Stability Stable. Incompatible with strong oxidizing agents, strong bases.
Packaging Size As Per Requirement

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