PRODUCTS

DOWANOL DPnB

CAS Number: 34590-94-8
EC Number: 639-842-4
Molecular Formula: C7H16O3
Molecular Weight: 148.20

DOWANOL DPnB is dipropylene glycol n-butyl ether.
DOWANOL DPnB acts as an active solvent for solvent-based coatings, effective coalescent for for lowering minimum forming film temperature in water-borne latex coatings.

DOWANOL DPnB possesses good coupling ability.
DOWANOL DPnB offers very good solvency and good oil solubility.

DOWANOL DPnB exhibits good evaporation rate control and low viscosity.
DOWANOL DPnB is used in latex coatings.

DOWANOL DPnB is a slow-evaporating, hydrophobic glycol ether with excellent surface tension-lowering ability and coalescing properties.
DOWANOL DPnB is a relatively slow-evaporating solvent which is one of our most efficient coalescents in water-borne latex systems.

DOWANOL DPnB is a colorless liquid with a mild odor and low volatility.
DOWANOL DPnB has low water solubility, good coupling and demonstrates good solvency for coating resins.
The properties of DOWANOL DPnB support its use in agricultural, coating, cleaning, ink, textile, and adhesive products.

DOWANOL DPnB is a slow-evaporating glycol ether with an excellent balance of hydrophilic and hydrophobic character.
Provides outstanding coalescing and film properties.

DOWANOL DPnP is a good choice in coatings.
DOWANOL DPnB offers very good coalescing performance in blends with more hydrophobic materials such as DOWANOL PPh or PnB glycol ethers.
DOWANOL DPnB can also be blended with other materials to replace Butyl CELLOSOLVE glycol ether (formerly known as DOWANOL EB glycol ether).

DOWANOL's being chemically ethers of n-alkanols with bis(isopropylene glycol) represent characteristic properties of hydrotropic molecules or “solvo-surfactants”, i.e. they have some surfactant properties in addition to typical solvent properties.
The dynamic surface tension behaviour of aqueous DOWANOL solutions (c ≤ 10–1 M) is a consequence of different surface-active components owing to the presence of different isomers and surface-active contaminants.

By applying a special purification method (“flounder technique”) we removed additional (non-DOWANOL) surface-active trace impurities by aspirating them from the highly compressed adsorption layers.
The various sucked off fractions reveal peculiar surface properties that are quite different from those of the original and of the “surface-chemically” pure solutions.

Whereas the former show only short-time foam stability of a few seconds, the sucked-off fractions formed (meta)stabile foams lasting for a few hours.
DOWANOL is concluded that the Dowanol’s solvo-surfactant characteristic is caused by the synergistic effect of various surface-active species rather than by the special structure of an individual component.

DOWANOL DPnB is a slow-evaporating, hydrophobic glycol ether with excellent surface tension-lowering ability and coalescing properties.
DOWANOL DPnB has a near mid-range balance of hydrophobic and hydrophilic characteristics, and DOWANOL DPnB offers significant water solubility.
DOWANOL DPnB is one of our most efficient coalescents in water-borne latex systems.

DOWANOL DPnB combines a number of properties that contribute to very high latex film quality:
High polymer plasticizing efficiency,

Large molecular size and therefore greater polymer mobility contribution,
Strong partitioning to the polymer phase, and
Relatively slow evaporation rate.

DOWANOL DPnB is compatible with many different resin types.
DOWANOL DPnB also provides excellent surface tension lowering ability, and is useful in cleaning products by itself or when blended with other products.

DOWANOL DPnB is used alone in cold metal cleaning, DOWANOL DPnB is a good solvent for removing oils and greases.
DOWANOL DPnB is an excellent choice for coatings applications, DOWANOL DPnB provides outstanding coalescing and film properties.

Applications of DOWANOL DPnB:
Coupling agent and solvent in household and industrial cleaners, grease and paint removers, metal cleaners, and hard surface cleaners.
Effective coalescent for lowering minimum film formation temperature MFFT) in water-borne latex coatings.

Active solvent for solvent-based coatings.
Chemical intermediate for the production of epoxides, acid ester derivatives, solvents, and plasticizers.
Effective solvent for water-reducible coatings.

Suggested Applications of DOWANOL DPnB:
Coalescent for water-borne latex coatings.
Active solvent for solvent-borne coatings.

Typical Applications of DOWANOL DPnB include:
Cleaners
Textils
Resins
Coating formulation and application
Industrial, automotive and architectural coatings

Other Applications
The properties listed in the previous section also support the use of DOWANOL DPnB in agriculture, cosmetics, electronics, ink, textile and adhesive products.
Specific end user may require approval by appropriate regulatory agencies.

Uses of DOWANOL DPnB:
DOWANOL DPnB is a slow-evaporating, hydrophobic glycol ether with excellent surface tension-lowering ability and coalescing properties.
DOWANOL DPnB has a near mid-range balance of hydrophobic and hydrophilic characteristics, and DOWANOL DPnB offers significant water solubility.

DOWANOL DPnB also provides excellent surface tension lowering ability, and is useful in cleaning products by itself or when blended with other products.
DOWANOL DPnB is used alone in cold metal cleaning, DOWANOL DPnB is a good solvent for removing oils and greases.
DOWANOL DPnB is an excellent choice for coatings applications.

Other Uses of DOWANOL DPnB:

Coatings:
DOWANOL DPnBB shows excellent coalescing performance in various resins including Acrylics, Styrene-Acrylics and Polyvinyl Acetates.
DOWANOL DPnB also offers superior film forming characteristics.
These features, coupled with mild odor, make DOWANOL DPnB a preferred solvent for interior water-based paints.

Cleaners:
DOWANOL DPnB has a mild odor and can be used in a variety of cleaners.
DOWANOL DPnB is particularly suited for use in cleaner formulations which require a slow evaporation rate, such as wax strippers and floor cleaners.

DOWANOL DPnB is an effective coupling agent for many greases and oils.
DOWANOL DPnB has low water solubility which is increased by the addition of low molecular weight alcohols and other propylene glycol ethers.

Benefits of DOWANOL DPnB:
Favorable environmental profile, superior performance for end use applications, formulations may require less Performance solvent than P or E Series
Active and effective ether for solvent-based coatings and water-reducible coatings
High polymer plasticizing efficiency
A larger molecular size that allows for a greater polymer mobility contribution
Strong partitioning to the polymer phase
Relatively slow evaporation rate
Good for the removal of soap scums and greasy soils in cleaning formulations
Excellent surface tension-lowering ability and coalescing properties

Features of DOWANOL DPnB:
Colorless
Low odor
Moderately soluble in water (19 ml/100 ml)
Good chemical stability
Excellent solvent properties
Very efficient surface tension reduction
Low toxicity
Wide range of applications

Storage of DOWANOL DPnB:
General industry practice is to store DOWANOL DPnB in carbon steel vessels.
Avoid contact with air when storing for long periods of time.

DOWANOL DPnB should never be stored or handled in copper or copper alloys.
DOWANOL DPnB may absorb water if exposed to air.

Store DOWANOL DPnB only in tightly closed, properly vented containers away from heat, sparks, open flame or strong oxidizing agents.
Use DOWANOL DPnP only non-sparking tools.

Ground containers before transfer.
Electrical equipment should conform to national electric code.

Typical Properties of DOWANOL DPnB:
Density (pounds per gallon at 25oC): 7.6
Evaporation Rate (BuAc = 100): 1.0
Flash Point (SETA) oC (o F): 101 (214)
Solubility by weight in water at 20oC: 5%
Solubility Parameter (Total Hansen): 9.4
Surface Tension (Dynes/cm) @ 25oC (77o F): 29
Refractive Index @ 25oC (77o F): 42
Viscosity (centistokes) @ 25oC (77o F): 4.8
Vapor Pressure@ 25oC (77o F) (mmHg): 0.03

Molecular Weight: 190.3 g/mol
Empirical Formula: C10H22O3
Appearance: Colorless
Freezing Point: <-75°C
(<-103°F)
Flash Point – Closed Cup: 100°C (212°F)
Boiling Point @ 760mmHg: 230°C (446°F)
Autoignition Temperature: 189°C (372°F)
Density @ 20°C: 0.91 kg/l
7.59 lb/gal
Vapor Pressure @ 20°C: <0.04 mmHg
Evaporation Rate (nBuAc = 1): 0.006
Solubility @ 20°C (in Water): 4.5 wt%
Refractive Index @ 25°C: 42
Viscosity @ 25°C: 4.9 cP
Surface Tension @ 25°C: 28.4 mN/m
Lower Flammability in Air: 0.6% v/v
Upper Flammability in Air: 20% v/v
Specific Heat @ 25°C: 1.79 J/g/°C
Heat of Vaporization @ normal boiling point: 252 J/g
Heat of Combustion @ 25°C: 30.8 kJ/g

Molecular Weight: 148.20
XLogP3: -0.1
Exact Mass: 148.109944368
Monoisotopic Mass: 148.109944368
Topological Polar Surface Area: 38.7 Å²
Physical Description: Colorless liquid with a mild, ether-like odor.
Boiling Point: 190 °C
Melting Point: -80 °C
Flash Point: 74 °C
Solubility: Miscible
Solubility in water: very good
Density: 0.95
Vapor Density: 5.1
Vapor Pressure: 0.5 mmHg
Autoignition Temperature: 270 °C
Evaporation Rate: 1.0
Surface Tension: 29
Refractive Index: 42
Viscosity: 4.8

Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 3
Rotatable Bond Count: 5
Heavy Atom Count: 10
Complexity: 75.3
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 2
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes

Synonyms of DOWANOL DPnB:
acrosolve DPM
arcosolv DPM
13588-28-8
1-Propanol, 2-(2-methoxypropoxy)-
2-(2-methoxypropoxy)propanol
2-(2-METHOXYPROPOXY)-1-PROPANOL
2-(2-methoxy-propoxy)-propan-1-ol
Glycol Ether DPM
dowanol DPM
DPGME
glycol ether DPM
1-(2-methoxyisopropoxy)-2-propanol
2-(2-methoxypropoxy) propan-1-ol
1-(2-methoxypropoxy) propan-2-ol
2-(2-methoxypropoxy)-1-propanol
1-(2-methoxypropoxy)-2-propanol
2-(2-methoxypropoxy)propan-1-ol (ppg-2)
1-(2-methoxypropoxy)propan-2-ol
1-(2-methoxypropoxy)propan-2-ol; (2-methoxymethylethoxy)propanol
polyoxypropylene (2) methyl ether
polypropylene glycol (2) methyl ether
2-propanol, 1-(2-methoxypropoxy)-
2-(2-methoxypropoxy)propan-1-ol
Dipropylene glycol methyl ether
13588-28-8
1-Propanol, 2-(2-methoxypropoxy)-
2-(2-methoxypropoxy)propanol
2-(2-METHOXYPROPOXY)-1-PROPANOL
2-(2-methoxy-propoxy)-propan-1-ol
Glycol Ether DPM
Glycol Ether DPM Reagent Grade
dipropyleneglycol monomethyl ether