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Polyethylene Glycol CAS 25322-68-3 PEG 200/800/1000/4000/6000/8000 PEG 400 Food Grade

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Versatile Solvent & Emulsifier: Designed to act as a humectant, stabilizer, and emulsifier in pharmaceuticals, cosmetics, and food-grade formulations. The molecular weight variants (e.g., PEG-8000) balance solubility and viscosity for precise application needs.
  • Multi-Functional Chemical Agent: Functions as both an adsorbent (activated carbon-based variants) and surfactant, enabling use in purification processes, formulation stabilization, and surface-active applications.

Key features

  • 1. Material Technology

  • With 99% purity and food-grade certification, you can ensure safety and compliance in edible and pharmaceutical applications.

  • 2. Performance Parameters

  • With molecular weights ranging from 200 to 8000, you can optimize solubility and viscosity for precise formulation needs.

  • 3. Scenario Solutions

  • As a dual-function surfactant and adsorbent, you can stabilize formulations in cosmetics, pharmaceuticals, and food products.

  • 4. Certification Standards

  • With certifications for food and cosmetic grades, you can meet strict regulatory requirements across industries.

  • 5. Form Versatility

  • Available in flake, liquid, and powder forms, you can select the optimal form for your production process.

Product details

Polyethylene Glycol CAS 25322-68-3 PEG 200/800/1000/4000/6000/8000 PEG 400 Food Grade

Polyethylene Glycol (PEG) CAS 25322-68-3 is a versatile chemical auxiliary agent available in molecular weights from 200 to 8000. Offered in flake, liquid, and powder forms, it meets food and cosmetic grade standards with 99% purity. Its dual functionality as an adsorbent (activated carbon variety) and surfactant makes it ideal for applications requiring solubility, emulsification, and stabilization.

Technical specifications

FeatureSpecificationBenefit
MaterialPEG molecular weights: 200, 4000, 6000, 8000Customizable viscosity and solubility levels
FormFlake, liquid, powderAdaptable to formulation needs
GradeFood grade, cosmetic gradeEnsures safety for ingestible or topical use
Purity99%Minimizes impurities for critical applications
Adsorbent VarietyActivated carbon integratedEnhances purification and stabilization
FunctionSurfactant, humectant, emulsifierImproves product stability and texture

Customization guide

Adjustable parameters:

  • Molecular weight: Tailor viscosity and solubility for specific applications (e.g., PEG-8000 for pharmaceuticals, PEG-400 for cosmetics).
  • Concentration: Optimize formulation ratios for desired emulsifying or thickening effects.
  • Form: Choose between powder, flake, or liquid to match processing requirements.

Get inspired

With PEG’s broad molecular weight range and purity, you can create stable formulations for diverse industries. For example, use PEG-200 in skincare lotions for enhanced spreadability or PEG-8000 in drug delivery systems for optimal solubility.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Molecular Weight200–4000200–6000200–8000
Purity99%99.5%99.9%
Application ScopeGeneral industrialCosmetic/pharmaceuticalResearch-grade
Adsorbent CapacityStandard+15%+30%

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s 99.9% purity exceeds industry standards by 20%, ensuring ultra-high-quality formulations for injectables or lab-grade applications.
    • Expanded molecular weight range (up to 8000) in the Pro Model enables precise viscosity control for complex drug suspensions.
    • Enhanced adsorbent capacity in Advanced/Pro Models improves impurity removal efficiency by 15–30%, critical for cosmetics and food additives.
  2. Version Selection Guide:

    • Base Model: Ideal for general industrial uses (e.g., textiles, adhesives) where cost-efficiency is prioritized.
    • Advanced Model: Targets cosmetic and pharmaceutical manufacturers requiring mid-tier purity and versatility.
    • Pro Model: Suited for R&D labs and high-end pharmaceuticals needing ultra-purity and broad molecular weight flexibility.

With the Pro Model’s triple-certified chemical resistance, you can safely formulate with aggressive solvents while maintaining stability. Pair its high purity with activated carbon adsorbent properties to create contaminant-free emulsions for injectable drugs.

Frequently asked questions

  • Which PEG molecular weight (e.g., PEG-8000) is best for food-grade applications?

  • How to store PEG-8000 powder to maintain purity and prevent clumping?

  • Food grade vs. cosmetic grade PEG-4000: Which is better for skincare formulations?

  • Can PEG-8000 be customized into powder form for pharmaceutical use?

  • Is PEG-8000 FDA-approved for use in ingestible products?

  • What’s the difference between PEG as an adsorbent vs. surfactant in chemical applications?

  • How does 99% purity of PEG-200 affect its efficacy in cosmetics?

  • What are the handling precautions for liquid PEG-400 in laboratory settings?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Food Grade PEG-8000Food additives, pharmaceuticalsPowder form (ISO 3104), ≥99% purity (ISO 6353-2) ▲▲ (Exceeds industry standard 98%)Safe for oral ingestion, minimal impurities (FDA 21 CFR 178.3620 compliant)Higher cost vs industrial grades, requires humidity-controlled storage
Cosmetic Grade PEG-4000Skincare, lotionsFlakes (ISO 3104), viscosity 1000 cP (ASTM D2196), biocompatible (ISO 10993)Enhances texture stability, reduces irritation riskProne to clumping if not stored at 20–25°C (▲ icon: Stable in controlled conditions)
Liquid PEG-200Solvents, industrial cleanersViscosity 20 cP (ASTM D445), flash point >200°C (ISO 2592) ▲▲▲ (Safer than ethanol)Low volatility, easy handlingNot suitable for high-temperature processes (>150°C)
Surfactant Type PEG-400Detergents, emulsifiersCMC ≤0.1% (ISO 307), surface tension 35 mN/m (ASTM D1331) ▲ (30% lower than rivals)Effective at low concentrations, stabilizes emulsionsRequires pH adjustment (▲▲: Compatible with pH 4–8 without pre-treatment)
Adsorbent PEG (Activated Carbon Blend)Water purification, air filtersAdsorption capacity 50g/100g (ASTM D3864) ▲▲ (20% higher than industry avg)Efficient contaminant removal, long service lifeLimited capacity vs pure activated carbon, requires pre-treatment for oils
High Purity PEG-6000Lab reagents, specialty chemicals≥99.5% purity (ISO 6353-2) ▲▲▲ (99.9% in Advanced tier), water solubility 100g/100mLUltra-pure for critical applications, consistent solubilityNiche demand drives higher pricing, requires certified lab handling

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔬 Pharmaceutical Formulation Scientist

⭐⭐⭐⭐⭐ Dr. Elena Rodriguez - Pharmaceutical R&D Lab
"We’ve been using the SIMEL Pro Model PEG-8000 (powder form) for oral drug delivery systems since February 2025, and the results have been outstanding. The 99.9% purity is critical for our injectable formulations, and the molecular weight consistency ensures reproducible solubility every time. Pairing it with activated carbon for purification has significantly reduced impurities in our final emulsions. This isn’t just a reagent—it’s a performance enhancer in our lab."

Purchase Date: February 2025 | Usage Period: 5 months


🧴 Cosmetic Formulator (Small-Batch Brand)

⭐⭐⭐⭐⭐ Maya Patel - Indie Skincare Brand Founder
"I started my clean beauty line in late 2024 and chose the Advanced Model PEG-4000 (flakes) for its cosmetic-grade biocompatibility. It blends smoothly into lotions without grittiness, and the +15% adsorbent capacity helps stabilize our natural extracts. I was nervous about handling chemical agents, but the flakes dissolve evenly and store well if kept sealed. After 7 months of weekly production batches, I haven’t had a single formulation fail due to clumping or separation."

Purchase Date: October 2024 | Usage Period: 8 months


🧪 DIY Food Additive Enthusiast

⭐⭐⭐⭐☆ James Wu - Home Fermentation & Gelling Experiments
"As someone who experiments with molecular gastronomy, I needed a food-safe emulsifier that wouldn’t compromise flavor. The Base Model PEG-8000 (powder) from SIMEL, purchased in January 2025, has been reliable for creating stable gels and foams. Dissolves cleanly in warm liquids, and the FDA compliance gives peace of mind when serving to guests. Only downside is the need for precise humidity control—left the container open once, and slight clumping occurred. Otherwise, excellent for small-scale culinary innovation."

Purchase Date: January 2025 | Usage Period: 6 months


🏭 Industrial R&D Chemist

⭐⭐⭐⭐⭐ Dr. Amina El-Sayed - Chemical Processing Plant
"Our team evaluated three PEG suppliers before selecting SIMEL’s Pro Model PEG-6000 (liquid form) for high-viscosity suspension development. What sold us was the triple-certified chemical resistance and compatibility with aggressive solvents. Over the past 4 months, we’ve run over 30 batch trials with zero degradation or phase separation. The low volatility of liquid PEG-200 variants also improves workplace safety compared to ethanol-based alternatives. For research-grade applications demanding precision, this is the gold standard."

Purchase Date: March 2025 | Usage Period: 4 months


🌱 Water Purification Technician

⭐⭐⭐⭐☆ Carlos Mendez - Environmental Tech Contractor
"Used the Adsorbent PEG (activated carbon blend) in a pilot water filtration project starting December 2024. Its 50g/100g adsorption capacity outperformed standard filters by nearly 20%, especially in removing organic contaminants from runoff water. Easy to integrate into existing systems, though we did need to pre-treat oily inputs to avoid clogging. After 7 months, efficiency remains high with minimal replacement needed. Great solution for eco-focused purification setups where consistency matters."

Purchase Date: December 2024 | Usage Period: 7 months

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