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HC Technology
Methylparaben
Categories:
Personal Care Ingredients

Methylparaben

Alias
Methyl p-hydroxybenzoate / Methyl 4-hydroxybenzoate / p-Hydroxybenzoic acid methyl ester / 4-Hydroxybenzoic acid methyl ester / Nipagin / Nipagin M
CAS No.
Molecular Formula
C8H8O3
Structure
Methylparaben Chemical Structure
Product Details

Product Overview

Usage

Used in pharmaceuticals, cosmetics and personal care industries as a preservative and antimicrobial agent in formulations, primarily for inhibiting mold and yeast growth, extending the shelf life of preparations, creams, cleansers and topical products, and helping maintain formulation stability during storage. Often used in combination with other preservatives.
Specifications

Technical Specifications

Appearance Colorless crystals or white crystalline powder
Content (on dried basis) % 99.0–100.5
Melting point ℃ 125–128
Acidity (pH) 4.0–7.0
Chloride (Cl) % ≤0.035
Sulfate (as SO₄) % ≤0.024
Loss on drying % ≤0.50
Residue on ignition % ≤0.10
p-Hydroxybenzoic acid and salicylic acid % ≤0.10
Related substances Pass
Solution appearance Pass
Boiling point ℃ 198.6
Density g/cm³ 1.46
Refractive index 1.4447
Flash point ℃ 280
Solubility 1 g dissolves in 400 mL water or 40 mL warm oil; freely soluble in alcohol, ether and acetone; slightly soluble in benzene and carbon tetrachloride
Logistics

Packaging, Storage & Transport

Packaging

25 kg/fiber drum; custom packaging available upon request

Storage

Store sealed in a cool, dry, well-ventilated place; protect from moisture and light

Transport

Transport as general non-hazardous chemicals