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METHYL DIPROXITOL = DIPROPYLENE GLYCOL METHYL ETHER = DPM
CAS Number: 34590-94-8
EC Number: 252-104-2
Chemical Formula: C7H16O3 / CH3OCH2CH(CH3)OCH2CH(CH3)OH
Methyl Diproxitol (also known as Dipropylene glycol monomethyl ether, Methoxy Propoxy Propanol, Oxybispropanol, dipropylene glycol methyl ether, DPM, and Dowanol DPM) is a propylene oxide-based/P series glycol ether and has the formula C7H16O3.
Methyl Diproxitol is a clear, colourless, viscous liquid which has a slight ether odour.
Methyl Diproxitol is completely soluble in water and is miscible with a number of organic solvents, for example ethanol, carbon tetrachloride, benzene, petroleum ether and monochlorobenzene.
Methyl Diproxitol is also practically non- toxic and hygroscopic, and thus lends itself well to commercial and industrial use
Methyl Diproxitol is produced by the reaction of propylene oxide with methanol using a catalyst.
Methyl Diproxitol is stored in mild steel and /or stainless steel tanks and/or drums and can be transported by bulk vessels or tank trucks.
Methyl Diproxitol is a very useful industrial and commercial chemical.
Methyl Diproxitol is also a chemical intermediate in the production of Dipropylene glycol monomethyl ether acetate or DPMA.
Methyl Diproxitol is produced by the reaction of propylene oxide with methanol using a catalyst.
Methyl Diproxitol is a colorless, viscous liquid with a slight odour.
Methyl Diproxitol has moderate volatility and is completely soluble in water.
Methyl Diproxitol is a colourless, hygroscopic, high boiling liquid with a mild odour.
Methyl Diproxitol is miscible in any proportion with water and many organic solvents and has good solvent power for nitrocellulose and dyestuffs.
Methyl Diproxitol is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 10 000 to < 100 000 tonnes per annum.
Methyl Diproxitol mixs with both water and other solvents, and combine powerful dissolving characteristics with medium to low volatility.
This gives Methyl Diproxitol some key performance including:
*Miscibility with water
*Compatibility with a wide range of polar and non-polar solvents
*High solvent power
*Medium-Low volatility
*Coalescence and/or coupling
USES and APPLICATIONS of METHYL DIPROXITOL:
-One of Methyl Diproxitol's main commercial uses is as a solvent for paints, varnishes, inks, strippers, and degreasers.
-Methyl Diproxitol is also utilised as a coalescing agent for water-based paints and inks where it promotes polymer fusing during the drying process.
-Methyl Diproxitol is also a component of wood and coil coatings, as well as coatings used in the automotive industry, industrial maintainence, and metal finishing.
-Methyl Diproxitol is a very useful chemical building block in the manufacture of many products.
This is due to Methyl Diproxitol's reaction with acids, forming esters and oxidising agents which produce aldehydes, carboxylic acids and alkali metals therefore creating alcoholates and acetals.
-Methyl Diproxitol is this flexibility that supports the use of DPM across a range of industries and therefore makes Methyl Diproxitol a component of many household items that people use every day.
-Methyl Diproxitol is found in ceiling and wall paints and in many common cleaners including glass and surface cleaners, paint-brush cleaners, all-purpose cleaners, carpet cleaners and disinfectant cleaners.
-Methyl Diproxitol is also found in cosmetics where it provides emollient properties and product stabilisation as well as floor and aluminium polish, leather and textile dyes, rust removers and pesticides where Methyl Diproxitol acts as a stabiliser.
-Methyl Diproxitol is especially effective for flushing mixing and metering equipment and feed lines, as Methyl Diproxitol quickly and completely cleans polyols, crystallized isocyanates, and other urethane intermediates.
-Methyl Diproxitol is also used in latex emulsion coatings, water reducible coatings, and cleaning applications.
-Methyl Diproxitol is used as a solvent, chemical intermediate and coupling agent.
-Methyl Diproxitol is solvent for paints, varnishes, alkyds, epoxies, polyesters, varnishes, strippers, inks, solvent-based coatings, lacquers, nitrocellulose and synthetic resins, insect repellents, waxes, adhesives, coatings, agricultural products, printing inks.
-Methyl Diproxitol is used as a coupling agent in water-based paints, inks, container painting fabrics, floor polishes.
-Methyl Diproxitol is used as a solvent and chemical intermediate for cleaners, coatings, paints, automotive fluids, agricultural products, waxes, adhesives, insect repellents, cosmetics.
-Methyl Diproxitol is used as solvent for DPM, PVC stabilizer, nitrocellulose, ethyl cellulose, polyvinyl acetate, paint and paint solvent and brake fluid component.
-Methyl Diproxitol can be used as a solvent of printing ink, enamel paint, cutting fluid and operating oil.
-Water-based paint as a coupling agent (usually used by mixing)
-As active solvent of water-based paint
-As solvent and bonding agent of household and industrial cleaners, oil and paint remover, metal and hard surface cleaner
-As the base solvent and coupling agent of solvent type screen printing ink
-As solvent and coupling agent of vat dye textile
-As coupling agent and skin care agent in cosmetic formulation
-As pesticide stabilizer and coagulant floor polishing agent
-Methyl Diproxitol is an organic solvent with a variety of industrial and commercial uses.
-Methyl Diproxitol finds use as a less volatile alternative to propylene glycol methyl ether and other glycol ethers.
The commercial Methyl Diproxitol is typically a mixture of four isomers.
-Methyl Diproxitol is often used in reformulation to compensate for the absence of aromatics for controlling viscosity, and for their ability to ‘couple’ aqueous and organic phases.
-Methyl Diproxitolis a very useful chemical building block in the manufacture of many products.
This is due to Methyl Diproxitol's reaction with acids, forming esters and oxidising agents which produce aldehydes, carboxylic acids and alkali metals therefore creating alcoholates and acetals.
-Methyl Diproxitol is this flexibility that supports the use of DPM across a range of industries and therefore makes Methyl Diproxitol a component of many household items that people use every day.
-Methyl Diproxitol is found in ceiling and wall paints and in many common cleaners including glass and surface cleaners, paint-brush cleaners, all-purpose cleaners, carpet cleaners and disinfectant cleaners.
-Methyl Diproxitol is a very useful industrial and commercial chemical.
One of Methyl Diproxitol's main commercial uses is as a solvent for paints, varnishes, inks, strippers, and degreasers.
-Methyl Diproxitol is also utilised as a coalescing agent for water-based paints and inks where Methyl Diproxitol promotes polymer fusing during the drying process.
-Methyl Diproxitol is also a component of wood and coil coatings, as well as coatings used in the automotive industry, industrial maintainence, and metal finishing.
-Methyl Diproxitol is also a component of hydraulic fluids and industrial degreasers and is a chemical additive in the oil production and drilling industry.
-Methyl Diproxitol is completely soluble in water and is miscible with a number of organic solvents, for example ethanol, carbon tetrachloride, benzene, petroleum ether and monochlorobenzene.
-Methyl Diproxitol is also practically non- toxic and hygroscopic, and thus lends itself well to commercial and industrial use.
-Methyl Diproxitol is used in the following products: coating products, anti-freeze products, lubricants and greases, inks and toners and biocides (e.g. disinfectants, pest control products).
-Other release to the environment of Methyl Diproxitol is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use, outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids) and indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters).
-Methyl Diproxitol is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
-Methyl Diproxitol is used in the following products: coating products, anti-freeze products and lubricants and greases.
-Cleaners
-Resins
-Coating formulation and application
-Industrial, automotive and architectural coatings
-Medium to slow evaporating solvent.
Methyl Diproxitol has 100% solubility in water and is ideally suited as a coupling agent in a wide variety of solvent systems.
-Having a higher flash point than PM glycol ether makes it easier to handle, store and ship.
-Often included in latex emulsion coatings;
Methyl Diproxitol can be used to prevent shocking (coagulation of the emulsion) when using hydrophobic solvents.
-More generally, Methyl Diproxitol's hydrophilic nature makes it an ideal bonding aid in water-reducible coatings and cleaning applications.
-Methyl Diproxitol is used with cleaners as they offer a comprehensive combination of essential physical and performance properties for cleaning formulations.
-Methyl Diproxitol's intermediate evaporation rate allows Methyl Diproxitol to be used in a potentially wider range of systems compared to many other solvents.
PHYSICAL and CHEMICAL PROPERTIES of METHYL DIPROXITOL:
Appearance: Colurless Liquid
Appearance: Transparent Liquid
Purity, %: 99,85
Density (Kg/Lt): 0,951
Flash Point, °C: 74 °C
Boiling Point, °C: 190 °C
Acidity, %: 0,001
Molecular Weight: 148,21
Appearance : liquid
Colour : clear
Odour : Ethereal
Odour Threshold : Data not available
pH : Not applicable
Melting / freezing point : -83 °C
Boiling point/boiling range : 184 - 190 °C
Flash point : 75 °C
Method: ASTM D-93 / PMCC
Evaporation rate : 0,01
Upper explosion limit : 14 %(V)
Lower explosion limit : 1,1 %(V)
Vapour pressure : 37,1 Pa (25 °C)
Relative vapour density : Data not available
Relative density : 0,95 - 0,96 (20 °C)
Density : 952 - 956 kg/m3 (20 °C)
Solubility(ies)
Water solubility : completely soluble (25 °C)
Partition coefficient: noctanol/water: log Pow: < 0,01
Auto-ignition temperature : 205 °C
Decomposition temperature : Data not available
Viscosity
Viscosity, dynamic : Data not available
Viscosity, kinematic : 4,55 mm2/s (20 °C)
Explosive properties : Not applicable
Oxidizing properties : Data not available
Other information:
Surface tension : 68,7 mN/m, 20 °C
Conductivity : Electrical conductivity: > 10,000 pS/m
Molecular weight : 148,2 g/mol
Purity, min. %m/m: 98.5
Water %m/m: 0.05
Acidity (as Acetic Acid) %m/m: 0.002
Density at 20°C kg/l: 0.953
Specific Gravity at 20°C/20°C: 0.955
Specific Gravity at 25°C/25°C: 0.951
Coefficient of Cubic Expansion at 20°C 10-4 /°C: 10
Refractive Index at 20°C: 1.423
Colour Pt-Co: < 5
Boiling Point °C: 191
Relative Evaporation Rate (nBuAc=1): 0.04
Relative Evaporation Rate (Ether=1): 360
Antoine Constant A # kPa. °C - 6.70707
Antoine Constant B # kPa. °C: 1633.03
Antoine Constant C # kPa. °C: 161.693
Temperature Limits for Antoine Equation # °C: +50 to +190
Vapour Pressure at 20°C kPa: < 0.01
Vapour Pressure at 50°C kPa: 0.10
Saturated Vapor Concentration at 20°C g/m3: < 0.5
Volatile Organic Compound (VOC) g/l: 953
Flash Point (Abel) °C: 79
Auto Ignition Temperature °C: 205
Lower Explosion Limit %v/v: 1.3
Upper Explosion Limit %v/v: 8.7
Electrical Conductivity at 20°C pS/m: 1*107
Dielectric Constant at 20°C: 10.5
Freezing Point °C: -83
Surface Tension at 20°C mN/m: 29
Viscosity at 20°C mPa.s: 4.3
Hildebrand Solubility Parameter (cal/cm3)^1/2: 8.7
Hydrogen Bonding Index: 0.0
Fractional Polarity: 0.050
Heat of Vaporisation at Tboil kJ/kg: 306
Heat of Combustion (Net) at 25°C kJ/kg: 27500
Specific Heat at 20°C kJ/kg/°C: 1.96
Thermal Conductivity at 20°C W/m/°C: 0.11
Miscibility at 20°C: Solvent in water %m/m: complete
Miscibility at 20°C: Water in solvent %m/m: complete
Azeotrope with Water: Boiling Point °C: 99.2
Azeotrope with Water: Solvent Content %m/m: 8.0
Molecular Weight g/mol: 148
FIRST AID MEASURES of METHYL DIPROXITOL:
-Description of first aid measures:
--General advice :
Not expected to be a health hazard when used under normal conditions.
*If inhaled :
No treatment necessary under normal conditions of use.
*In case of skin contact :
Remove contaminated clothing.
*In case of eye contact :
Flush eye with copious quantities of water.
Remove contact lenses, if present and easy to do.
Continue rinsing.
*If swallowed :
In general no treatment is necessary unless large quantities are swallowed, however, get medical advice.
ACCIDENTAL RELEASE MEASURES of METHYL DIPROXITOL:
-Environmental precautions:
Ventilate contaminated area thoroughly.
-Methods and materials for containment and cleaning up:
*Methods for cleaning up :
Retain as contaminated waste.
FIRE FIGHTING MEASURES of METHYL DIPROXITOL:
-Extinguishing media:
--Suitable extinguishing media :
Alcohol-resistant foam, water spray or fog.
Dry chemical powder, carbon dioxide, sand or earth may be used for small fires only.
--Unsuitable extinguishing media: None
*Specific extinguishing methods:
Standard procedure for chemical fires.
*Further information :
Keep adjacent containers cool by spraying with water.
EXPOSURE CONTROLS/PERSONAL PROTECTION of METHYL DIPROXITOL:
-Personal protective equipment:
*Eye protection :
Protective eyewear is recommended.
*Hand protection:
Nitrile rubber gloves.
Contaminated gloves should be replaced.
Personal hygiene is a key element of effective hand care.
*Skin and body protection :
Skin protection is not required under normal conditions of use.
*Hygiene measures :
Wash hands before eating, drinking, smoking and using the toilet.
Launder contaminated clothing before re-use.
-Environmental exposure controls:
*General advice :
Minimise release to the environment.
HANDLING and STORAGE of METHYL DIPROXITOL:
-General Precautions :
Ensure that all local regulations regarding handling and storage facilities are followed.
-Conditions for safe storage, including any incompatibilities
*Packaging material :
**Suitable material:
For containers, or container linings use mild steel, stainless steel.
STABILITY and REACTIVITY of METHYL DIPROXITOL:
-Reactivity:
The product does not pose any further reactivity hazards in addition to those listed in the following sub-paragraph.
-Chemical stability:
No hazardous reaction is expected when handled and stored according to provisions.
SYNONYMS:
Methyl Diproxitol
Dowanol DPM
Dipropylene Glycol Monomethyl Ether
DPM
DPGME
MDP
Propanol
Dimetoxypropanol
Dipropylene glycol monomethyl ether
Methoxypropoxypropanol
(2-methoxymethylethoxy)propanol
1-(2-Methoxypropoxy)propan-2-ol
Propanol, 1( or 2)-(2-methoxymethylethoxy)-
1-Propanol, 2-(2-methoxypropoxy)-
2-(2-methoxypropoxy)propanol
