Model NO.: T101617
Composition | Organic | Type | Organic Compounds |
Flux Type | Solvents | Usage | Medium |
Grade | Industrial Grade/USP/Ep | Purity | 99.5% |
MOQ | 1ton | Appearance | Colourless Transparent Liquid |
Trademark | TICHEM | Transport Package | Iron Drum/IBC/ISO Tank |
HS Code | 2905320000 | Origin | China |
Dipropylene Glycol Dimethyl Ether (DMM), also known as DPGDME or Proglyde DMM, is a glycol diether with the molecular formula C8H18O3 and CAS number 111109-77-4. It is a colourless transparent liquid with a mild odour. Unlike glycol ethers that contain hydroxyl groups, DMM is an aprotic solvent, meaning it has no active hydroxyl (-OH) functionality in its molecular structure. This aprotic nature makes it chemically inert in many reaction systems that are sensitive to proton donors.
DMM offers good solvency for a wide range of organic compounds, along with moderate evaporation rate and good coupling performance. It is compatible with both polar and non-polar materials, and it shows stability across a broad pH range. These characteristics make DMM suitable for use in organic synthesis reactions, coating formulations, agricultural chemical preparations, and various industrial cleaning applications.
Property | Value |
|---|---|
Molecular weight (g/mol) | 162.23 |
Flash point (Setaflash Closed Cup) | 149°F (65°C) |
Boiling point @ 760 mmHg, 1.01 bar | 347°F (175°C) |
Freezing point | <71ºC |
Specific gravity (25/25ºC) | 0.092 |
Density @ 20ºC | 0.903 g/cm³ |
Viscosity (cP or mPa•s @ 25ºC) | 1.0 |
Specific heat (J/g/ºC @ 25ºC) | 1.83 |
Autoignition temperature | 165ºC |
Surface tension (dynes/cm or mN/m @ 25ºC) | 26.3 |
Evaporation rate (n-butyl acetate = 1.0) | 0.13 |
DMM is available in industrial grade with a minimum purity of 99.0% determined by gas chromatography. Higher purity grades, including USP and EP grades, may be available for specific regulated applications upon request and subject to minimum order requirements. Buyers should confirm grade suitability for their intended use prior to purchase.
The aprotic nature of DMM makes it suitable for use in proton-sensitive coating systems, such as water-based polyurethane (PUD) coatings. Since DMM does not contain hydroxyl groups, it does not react with isocyanate components in two-component polyurethane systems, allowing it to function as a co-solvent that modifies viscosity and film formation without interfering with the curing chemistry. It can also improve the flow and leveling characteristics of waterborne coating formulations.
In organic synthesis, DMM is used as a reaction solvent for various chemical processes. Its aprotic character and moderate boiling point make it suitable for reactions that require a non-protic medium with good solvency for both reactants and products. In esterification reactions, DMM can serve as an azeotroping solvent to remove water generated during the reaction, which helps drive the esterification equilibrium toward higher conversion and supports the production of clear resin products.
DMM is used in paint stripping formulations, particularly those designed for removing cured coatings and epoxy residues. When combined with small amounts of protic co-solvents, it provides effective solvency for a range of coating films. It is also used in industrial cleaning products, including printed circuit board (PCB) cleaners, where its ability to dissolve flux residues while maintaining material compatibility with electronic components is valued. DMM's stability across a wide pH range allows its use in both acidic and alkaline cleaning formulations.
DMM finds application in agricultural chemical formulations where its solvency, coupling performance, and compatibility with a range of active ingredients and adjuvants are utilized. It can serve as a co-solvent in emulsifiable concentrates (EC), microemulsions, and suspension concentrate formulations, helping to maintain formulation stability and uniform active ingredient distribution. Agricultural formulation developers typically conduct compatibility testing at intended usage rates before full-scale production.
DMM is available in multiple packaging formats to suit different order sizes:
Steel drums: 180 kg net weight per drum
IBC totes: 900 kg net weight per intermediate bulk container
ISO tank containers: For bulk volume shipments
All packaging complies with applicable chemical transport regulations. Custom labelling and dedicated packaging configurations can be arranged for enterprise customers with regular volume commitments.
DMM should be stored in tightly sealed containers in a cool, well-ventilated warehouse area away from sources of heat, ignition, and direct sunlight. Although DMM has a moderate flash point, standard flammable liquid storage practices should be followed. Personnel handling the product should wear appropriate personal protective equipment, including chemical-resistant gloves and safety glasses. A complete Safety Data Sheet (SDS) is available and should be consulted before any handling, storage, or processing of this material.
An aprotic solvent is one that does not contain a readily transferable proton (hydrogen ion) and does not have hydroxyl (-OH) or amine (-NH) groups in its molecular structure. This matters in chemical systems where the presence of active protons would interfere with the desired reaction or curing process, such as in isocyanate-based polyurethane coatings or certain organic synthesis reactions. DMM's aprotic nature allows it to function as a solvent in these systems without participating in unwanted side reactions.
The standard MOQ is 1 metric ton for drum-packed orders. Orders in IBC totes or ISO tank containers are also available with corresponding minimum volume requirements. Evaluation samples in smaller quantities can be requested separately; please contact the sales team for current sample availability and pricing.
DMM (Dipropylene Glycol Dimethyl Ether) is a diether with both end groups methylated, making it aprotic. PM (Propylene Glycol Methyl Ether) is a monoether with one hydroxyl group, making it protic. This fundamental difference in molecular structure leads to different solubility behaviours and different suitability for reaction-sensitive systems. DMM generally has a higher boiling point and lower water miscibility compared with PM.
Standard delivery lead time is 7 to 15 working days from order confirmation, depending on order size and current inventory status. Bulk ISO tank shipments may require additional logistics arrangement time. Customers with ongoing supply needs may discuss scheduled delivery programs or safety stock arrangements to support consistent production planning.
