Dipropylene Glycol Methyl Ether (DPM)

A high-boiling, low-volatility amphiphilic glycol ether coupling solvent — infinitely miscible with water and oils, low irritation and low odour — for waterborne baking coatings, high-end packaging inks, electronic photoresists, precision cleaning, personal care fragrance and waterborne agrochemicals.

At a Glance

CAS No.	34590-94-8
Chemical Name	Dipropylene glycol methyl ether (DPM, (2-methoxymethylethoxy)propanol, dipropylene glycol monomethyl ether)
Molecular Formula	C7H16O3
Purity	≥99%
Origin	China
Packaging	210 L steel drum (195 kg) / IBC / ISO tank / small drum
Lead Time	15–20 working days after deposit

Product Overview

Dipropylene glycol methyl ether — also called DPM or (2-methoxymethylethoxy)propanol — is made by condensing propylene oxide with methanol and then removing monopropylene ether and light impurities through multi-stage vacuum rectification, giving a balanced isomer ratio and tightly controlled water content and colour. Its molecule carries both a hydrophilic hydroxyl group and a lipophilic ether bond, so it is compatible with water, resins and oils in both directions, and it evaporates very slowly. As a film-forming aid it sharply lowers the minimum film-formation temperature of coatings, and sprayed films show no blushing or pinholes. Its high flash point and very low ambient vapour pressure make it far safer on the shop floor than short-chain glycol ethers.

Industry-wide, low-VOC waterborne coating policy is being rolled out globally and traditional glycol ethers are increasingly restricted, so demand for DPM as an eco-friendly replacement solvent keeps growing. Expanding semiconductor and new-energy electronics manufacturing is driving firm demand for photoresists and precision cleaning, while personal care and waterborne agrochemical applications continue to add steady volume.

Key Advantages

Strong Two-Way Water/Oil Coupling for Fully Waterborne Systems

Its unique amphiphilic structure means waterborne coatings need no extra co-solvent. It prevents resin separation and settling and greatly improves the storage stability of the system.

Ultra-Low Volatility and Slow Drying for Full, Flawless Films

A high boiling point and very low vapour pressure give a wide film-formation window, so films form completely even at low temperature with less cracking, blushing and cratering.

High Flash Point and Low Vapour Pressure for Safer Plant Operation

A 75 °C flash point means flammable vapour does not readily accumulate at ambient temperature, so explosion-proof equipment investment is lower and shop-floor risk is well below short-chain ethers such as PM and CAC.

Low Toxicity and Regulatory Compliance, Replacing Restricted Glycol Ethers

No reproductive toxicity risk, compliant with REACH and workshop VOC controls, and a high pass rate in testing for exported coatings and personal care products.

Applications

Dipropylene glycol methyl ether serves six differentiated industrial sectors: waterborne industrial baking coatings, high-end packaging inks, electronic photoresists, precision industrial cleaning, personal care fragrance and waterborne agrochemical formulations.

• Waterborne industrial baking coatings — a dedicated film-forming and coupling agent for architectural latex paints, waterborne wood coatings and eco-friendly metal topcoats; it lowers the film-formation temperature and improves film scrub resistance.
• High-end packaging inks — a slow-drying solvent for waterborne gravure and offset inks on food flexible packaging; pigments disperse evenly and there is no screen blocking at high press speeds.
• Electronic photoresists — a dilution and stripping medium for PCB and semiconductor photoresists; it evaporates without residue and does not corrode precision substrates.
• Precision industrial cleaning — an oil and grease cleaner for optical lenses, lithium-battery components and plastic fixtures; cleaned parts show no water marks or ionic residue.

Technical Specifications

Appearance	Colourless liquid with a mild, pleasant odour
Purity	≥99%
Molecular Formula	C7H16O3
CAS No.	34590-94-8
EINECS No.	252-104-2
Relative Density (water = 1)	0.95 g/cm³ (at 20 °C)
Flash Point	75 °C
Boiling Point	189.6 °C
Hazard Classification	Non-hazardous
Stability	Stable under normal storage and use at ambient temperature
Solubility	Infinitely miscible with water; compatible with alcohols, ketones, esters, aromatic hydrocarbons and all common resins
Storage	Store in an ordinary ventilated, sealed warehouse below 37 °C. Keep separate from strong oxidisers and hold standard fire-fighting material on site.

Composition

Component	Concentration	CAS No.
Dipropylene glycol methyl ether	≥99%	34590-94-8

Transport & Compliance

UN No.	None (non-hazardous)
Hazard Class	Non-hazardous
Packing Group	Conventional packaging
HS Code	2909490000
Packaging	195 kg per drum (210 L steel drum)

UN and HS codes are shown for reference only — please confirm with us before shipment.

FAQ

What is your minimum order quantity?

Our MOQ is one 20GP container — up to 80 drums of 210 L.

What packaging do you offer?

Standard 210 L steel drums, plus IBC totes, ISO tank containers and small drums.

How many drums fit in a 20GP or 40GP, and can you consolidate?

Yes, we consolidate up to 5 product types in one shipment. A 20GP holds up to 80 drums (210 L); a 40GP holds around 130 drums (210 L).

What is the lead time?

15–20 working days after the deposit is received.

Which export documents do you provide?

COA, MSDS, commodity inspection certificate and dangerous goods packaging certificate. We can also assist with Certificate of Origin and other customs paperwork.

What payment terms do you accept?

T/T: 30% deposit, 70% balance against a copy of the Bill of Lading.

Technical Documents