Triethylen Glycol Monomethyl Ether (TPM)
Glycol Ethers, High-Purity Solvents

Triethylen Glycol Monomethyl Ether (TPM)

Triethylene Glycol Monomethyl Ether, commonly known by the abbreviation TPM or Methoxytriglycol, is a clear, colorless, and practically odorless organic compound belonging to the glycol ether family. Chemically identified by CAS number 112-35-6, it serves as a high-performance solvent characterized by its high boiling point, low volatility, and excellent solvency power across a wide range of organic and inorganic solutes. Due to its unique molecular structure—containing both ether and hydroxyl functional groups—TPM exhibits exceptional miscibility with water and many common organic solvents. This dual functionality makes it an invaluable intermediary and solvent in industrial chemistry. It is particularly valued in applications requiring high thermal stability and slow evaporation rates. As a member of the ethylene oxide-based glycol ether series, TPM provides a critical balance of hydrophilicity and lipophilicity, ensuring its utility in complex formulations where phase stability and solvency are paramount for product performance and longevity.

Attributes

Key Features and Benefits

  • High boiling point and low vapor pressure reduce VOC emissions and evaporation losses during industrial processing.
  • Exceptional solvency for resins, oils, and dyes ensures homogeneous mixtures in complex chemical formulations.
  • Full miscibility with water and a broad spectrum of organic solvents facilitates versatile formulation options.
  • High flash point enhances industrial safety profiles compared to shorter-chain glycol ethers.
  • Low toxicity profile and high chemical stability under standard operating conditions.
  • Acts as an effective viscosity modifier and coupling agent, improving the stability of aqueous and non-aqueous systems.
  • Excellent hygroscopic properties allow it to function as an efficient humectant.
Specifications

Technical Highlights

  • Molecular Formula: C7H16O4; Molar Mass: 164.20 g/mol.
  • Boiling Point: Approximately 249°C at 760 mmHg, indicating high thermal resistance.
  • Specific Gravity: 1.048 at 20°C, providing predictable density for volumetric measurements.
  • Viscosity: Low dynamic viscosity allows for easy handling and pumping in industrial pipelines.
  • Vapor Pressure: Less than 0.01 mmHg at 20°C, minimizing inhalation exposure risks.
  • Refractive Index: Approximately 1.439, consistent with high-purity glycol ether standards.
  • Hydroxyl Value: High reactivity for esterification and etherification reactions in chemical synthesis.
  • Solubility Parameter: Balanced Hansen solubility parameters for targeted resin dissolution.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

  • Electrical and electronics
  • Connectors, switches, PCB housings, terminal blocks
  • Automotive
  • Under-hood components, interior assemblies, cable conduits
  • Wire and cable
  • Insulation layers, sheathing, jacketing materials
  • Construction
  • Plastic fittings, conduits, insulation panels
  • Consumer appliances
  • Enclosures, adapters, plugs, casings
  • Industrial components
  • Fiber-reinforced composites, flame-retardant masterbatches
  • Compatible polymers
  • PA6, PA66
  • PBT, PET
  • PE, PP
  • Blends and copolymers requiring halogen-free flame retardancy
Key Sectors

Target Industries

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