ethyl paraben cas 120-47-8

Chemical Name: Ethyl paraben
CAS No.: 120-47-8
Molecular Fomula: C9H10O3
Molecular weight:166.18g/mol
Appearance: White powder
Assay: 98%-102%

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Ethyl Paraben (CAS 120-47-8) Technical Guide

Table of Contents

Product Overview & Specifications

Parameter Value
Chemical Name Ethyl 4-hydroxybenzoate
CAS Number 120-47-8
Molecular Formula C9H10O3
Appearance White crystalline powder
Purity ≥99% (HPLC)
Melting Point 114-117°C
Boiling Point 297-298°C
Density 1.168 g/cm³
Solubility Sparingly soluble in water (0.7g/L at 25°C), soluble in ethanol and propylene glycol

Applications & Industry Uses

As a broad-spectrum antimicrobial agent, ethyl paraben demonstrates exceptional performance in:

  • Cosmetics: Primary preservative in creams, lotions, and makeup products (0.1-1.0% concentration)
  • Pharmaceuticals: Excipient in topical ointments and oral suspensions
  • Food Industry: Food additive (E214) for baked goods and dairy products
  • Industrial Products: Preservative in adhesives and lubricants

Technical Parameters Comparison

Property Ethyl Paraben Methyl Paraben Propyl Paraben
Antimicrobial Efficacy Moderate High Low
pH Stability 3.0-8.0 3.0-6.5 4.0-7.5
Oil Solubility Good Moderate Excellent
Recommended Use Level 0.1-0.8% 0.03-0.5% 0.02-0.3%

Usage Guidelines

  1. Optimal concentration: 0.1-0.5% in aqueous systems
  2. Combine with other parabens for synergistic effects
  3. Heating requirement: Dissolve at 60-80°C
  4. pH adjustment: Maintain between 4.0-7.0 for maximum efficacy

Industry Case Studies

Case 1: Cosmetic Cream Preservation

Client: European skincare manufacturer
Challenge: Microbial contamination in water-in-oil emulsion
Solution: 0.4% ethyl paraben + 0.1% phenoxyethanol combination
Result: 24-month shelf life with microbial counts <10 CFU/g

Case 2: Pharmaceutical Syrup Stabilization

Client: Asian generic drug producer
Challenge: Fungal growth in oral suspension
Solution: 0.2% ethyl paraben + 0.05% potassium sorbate
Result: Compliance with USP <51> antimicrobial effectiveness testing

Quality Assurance & Certifications

  • USP/NF compliance
  • REACH registered
  • Kosher/Halal options available
  • ISO 9001:2015 certified production

Contact Information

For technical specifications or bulk pricing inquiries:
Email: info@vivalr.com
Phone: (86) 15866781826
Office Hours: Mon-Fri 8:30 AM – 5:30 PM (GMT+8)

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