Product Name: Methyl Cellulose (MC)
CAS Number: 9004-67-5
Date: March 01, 2025

General Description

Methyl Cellulose (MC) is a white to off-white, odorless powder derived from cellulose, where some hydroxyl groups are substituted with methyl groups. It is a water-soluble polymer that forms viscous, clear solutions or gels when dissolved in water, with properties varying by viscosity grade and degree of substitution. MC is widely used as a thickener, binder, film-former, and stabilizer in food, pharmaceutical, construction, and industrial applications.

Typical Applications

  • Food Industry: Thickener, emulsifier, stabilizer (E461); used in sauces, baked goods, ice cream
  • Pharmaceuticals: Binder, disintegrant, or coating for tablets; viscosity agent in syrups
  • Construction: Water retention agent in cement, mortar, and tile adhesives
  • Cosmetics: Thickener in shampoos, lotions, and toothpaste
  • Industrial: Adhesives, paints, and paper coatings

Technical Specifications

PropertyValue
AppearanceWhite to off-white powder
Methoxyl Content27.5–31.5% (w/w) (standard grade)
Moisture Content≤ 5.0%
Ash Content≤ 1.5%
Bulk Density200–400 g/L
Particle Size90% passes through 100 mesh
Viscosity5–100,000 cP (2% in water at 20°C, varies by grade)
pH (1% solution)5.0–8.0
SolubilitySoluble in cold water; insoluble in hot water, ethanol, ether

Performance Properties

  • Solubility: Dissolves in cold water to form clear, viscous solutions; gels upon heating (thermal gelation, reversible).
  • Viscosity: Adjustable based on concentration and grade; higher molecular weight yields higher viscosity.
  • Film Formation: Forms flexible, transparent films when dried; good barrier to oils and greases.
  • Water Retention: Enhances moisture retention in construction mixes, improving workability and curing.
  • Stability: Stable in neutral to mildly acidic conditions; degrades in strong alkalis or high heat (>200°C).

Storage and Handling

  • Storage Conditions: Store in a cool, dry place (5–30°C) in sealed containers, away from moisture and direct sunlight.
  • Shelf Life: Minimum 24 months under proper storage conditions.
  • Packaging: 25 kg multi-layer paper bags or fiber drums with polyethylene lining.

Safety Information

  • Non-hazardous under normal handling conditions.
  • Avoid dust inhalation; use protective equipment (mask, gloves) if handling large quantities.
  • Consult the Safety Data Sheet (SDS) for detailed safety and disposal instructions.

Usage Guidelines

  • Dissolution: Disperse in hot water (>80°C) to prevent lumping, then cool to hydrate fully and achieve viscosity.
  • Typical Dosage:
    • Food: 0.1–2% of formulation
    • Construction: 0.2–0.5% of dry mix
    • Pharmaceuticals: 1–5% as binder or thickener
  • Processing: Compatible with cold-mix processes; avoid prolonged exposure to high temperatures during use.

Notes

  • Viscosity grades (e.g., 15 cP, 400 cP, 4000 cP) vary by supplier and application. Specify grade for exact performance (e.g., METHOCEL™ A4M).
  • Food-grade MC complies with FCC (Food Chemicals Codex) and EU regulations (E461).
  • Higher methoxyl content increases gelation temperature (typically 50–55°C for standard grades).