Diaminodiphenyl ether
CAS Number
101-80-4
EC Number
202-977-0
Abbreviation
ODA
Industries: Plastics & Polymers
What is Diaminodiphenyl ether?
Diaminodiphenyl ether (CAS 101-80-4), abbreviated ODA and also known as 4,4'-oxydianiline, is an aromatic diamine monomer used in the synthesis of high-performance polymers.
Where is Diaminodiphenyl ether used?
- Polyimide films and resins: primary monomer reacting with dianhydrides for flexible electronics, aerospace components and high-temperature insulation
- Epoxy formulations: curing agent producing thermosets with elevated glass transition temperatures for structural composites and printed circuit board laminates
- Polyurethane and polyurea systems: aromatic chain segments improving rigidity and heat resistance in foams and coatings
- Specialty colorants: intermediate in synthesizing azo dyes and pigments for printing inks
- It also serves as a reactive building block and curing agent where thermal stability and mechanical durability are critical.
Commercial specifications
- Purity 98% to 99%+
- Technical and high-purity grades
- Monomer-grade specifications for polyimide synthesis
- Packaging from kilogram-scale bags to bulk quantities
Other Names (Synonyms)
4,4’-oxydianiline|4-(4-aminophenoxy)aniline|4,4'-diaminodiphenyl ether|ODA
What are the physical properties of Diaminodiphenyl ether?
Melting Point 186-187 °C
Boiling Point >300 °C
Density 1.417 g/cm³
Flash Point 426 °F
Appearance 4,40′-Oxydianiline is a white crystalline solid, or a beige powder.
Color White
Form Solid
Water Solubility Insoluble. <0.01 g/100 mL at 15 ºC
Vapor Pressure 10 mm Hg ( 240 °C)
Refractive Index 1.6660 (estimate)
Log P 0.72 at 20℃
How is Diaminodiphenyl ether classified and handled safely? Learn More
Danger
GHS06· Toxic GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H301 Toxic if swallowed
H302 Harmful if swallowed
H311 Toxic in contact with skin
H317 May cause an allergic skin reaction
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
Which trade and regulatory codes apply to Diaminodiphenyl ether?
HS Code 29222900
UN Number 3077
ADR Class 9
Packing Group III
Storage Class 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects
WGK (Germany) 3