LAPOX® ARC-28
Technical Data Sheet | Polymers Business
Description Lapox® ARC-28 is an unmodified, low viscosity, high purity liquid epoxy resin. When it is
used with appropriate epoxy hardener, it provides an excellent combination of mechanical,
thermal, chemical and physical properties useful in very high end application components
for defense and aerospace segments.
Chemical structure
O O O
O
Advantages Good mechanical properties
Low shrinkage
High glass transition temperature
Good chemical resistance
Applications Potting and Encapsulations
Casting and tooling
Electrical connectors
High voltage electrical components
Typical specifications Properties Unit Test method Values
*Clear viscous liquid or
Appearance - Visual crystalline waxy solid or
crystalline waxy solid
Colour APHA ASTM D1209 Max. 50
Epoxy value Eq/kg ASTM D1652 5.71 - 5.95
Epoxide Equivalent Weight g/eq ASTM D1652 168 - 175
Viscosity at 25°C mPa.s ASTM D2196 4000 - 5500
Hydrolysable chlorine % ASTM D1726 Max. 0.03
*Product may crystallise during storage due to high purity. Can be liquefied by stirring
between 60°C and 65°C.
Packaging Lapox® ARC-28 is available in 25 kg and 240 kg MS drums. Other packing may be
considered on request.
Storage and handling Lapox® ARC-28 should be stored in a cool and dry place, preferably in a sealed container
and should not be exposed to direct sunlight. This product has a shelf life of 3 years if
stored in its original container between 20°C and 40°C away from humidity and excessive
heat. Lapox® ARC-28 has a tendency to crystallise if stored below 20°C. Crystallisation
can be reversed after heating at 60°C to reliquify it and restore its original properties. The
recommended pumping temperature is between 70°C and 80°C.
March 2020 Page 1 of 2
LAPOX® ARC-28
Technical Data Sheet | Polymers Business
Safety Wear personal protective equipment (PPE). Avoid contact with the eyes and skin. In case
of direct contact and irritation, the resin should be washed off immediately with soap and
warm water. Avoid breathing vapours, mist or gas. Please refer to the Safety Data Sheet
(SDS) of Lapox® ARC-28 for detailed safety instructions.
Spills and disposal In case of spills, sweep up and shovel the spilled material. Keep spilled material in
suitable, closed containers for disposal. Soak up with an absorbent such as clay, sand or
other suitable material. Flush area with water to remove trace residue. Do not allow the
product to reach the sewage system. Waste must be disposed of in accordance with
federal, state or local regulations as applicable.
Contact E-mail: polymers@atul.co.in
Website: www.atul.co.in
Note Lapox® is a registered trademark of Atul Ltd.
Manufacturing site
Atul 396 020, Gujarat, India
Telephone: (+91 2632) 230000 | 233261
E-mail: contact@atul.co.in
Disclaimer: The information contained herein is for information purposes only. While enough care is taken in disclosing the information, users of this
information are advised to cross-check the same depending upon use | application. Atul Ltd does not give any assurance or warranty or guarantee in
regard to the accuracy or completeness of the information and no claim or liability will be accepted or entertained in regard thereto. Atul Ltd makes no
warranty of any kind, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose or
performance or usage of trade.
March 2020 Page 2 of 2
