ARADUR 3243-1

ARADUR 3243-1 is a low-viscosity, modified cycloaliphatic polyamine hardener developed for use with liquid epoxy resins.
ARADUR 3243-1 provides effective curing, extended working time, good mechanical performance, and broad chemical resistance in industrial epoxy systems.
ARADUR 3243-1 is widely used in solvent-free flooring compounds, epoxy resin mortars, protective coatings, and anti-corrosion formulations.

CAS Number: Not assigned as a single CAS number; proprietary formulated mixture
EC Number: Not assigned as a single EC number; proprietary formulated mixture
Molecular Formula: Not applicable to a formulated polyamine mixture
Molecular Weight: Not applicable to a formulated polyamine mixture

Synonyms: ARADUR 3243-1, ARADUR® 3243-1, Aradur 3243-1 Epoxy Hardener, Aradur 3243-1 Curing Agent, Modified Cycloaliphatic Polyamine Hardener, Cycloaliphatic Polyamine Epoxy Curing Agent, Low-Viscosity Epoxy Hardener, Liquid Polyamine Hardener, Solvent-Free Epoxy Curing Agent, Epoxy Flooring Hardener, Epoxy Mortar Hardener, Anti-Corrosion Coating Hardener, Two-Component Epoxy Hardener, Industrial Epoxy Curing Agent, Amine-Based Epoxy Hardener, Light-Colored Epoxy Hardener, Long-Pot-Life Epoxy Hardener, Nonylphenol-Free Epoxy Hardener, High-Gloss Epoxy Curing Agent, Chemical-Resistant Epoxy Hardener, ARADUR 3243-1 Modified Amine, ARADUR 3243-1 Polyamine, Huntsman ARADUR 3243-1, Epoxy Resin Crosslinking Agent, Room-Temperature Epoxy Hardener

APPLICATIONS

ARADUR 3243-1 is used as a curing agent for solvent-free industrial epoxy flooring systems.
ARADUR 3243-1 is used in self-leveling epoxy floors requiring smooth and glossy surfaces.
ARADUR 3243-1 is used in heavy-duty flooring formulations for factories and production facilities.
ARADUR 3243-1 is used in epoxy floor coatings for warehouses and logistics centers.

ARADUR 3243-1 is used in decorative epoxy flooring systems where light color and surface clarity are important.
ARADUR 3243-1 is used in pigmented epoxy floors to support uniform color development.
ARADUR 3243-1 is used in seamless flooring systems for commercial and industrial interiors.
ARADUR 3243-1 is used in epoxy flooring formulations designed for easy application and leveling.

ARADUR 3243-1 is used in epoxy resin mortars for repairing concrete surfaces.
ARADUR 3243-1 is used in polymer mortars for filling cracks, joints, and damaged areas.
ARADUR 3243-1 is used in high-strength epoxy screeds for industrial flooring installations.
ARADUR 3243-1 is used in trowel-applied epoxy mortar systems requiring good mechanical strength.

ARADUR 3243-1 is used in anti-corrosion coatings for steel and other metallic substrates.
ARADUR 3243-1 is used in protective epoxy coatings for industrial machinery and equipment.
ARADUR 3243-1 is used in maintenance coatings exposed to chemicals, moisture, and abrasion.
ARADUR 3243-1 is used in corrosion-resistant coating systems for manufacturing plants.

ARADUR 3243-1 is used in epoxy primers for concrete and mineral substrates.
ARADUR 3243-1 is used in penetrating primer systems intended to improve coating adhesion.
ARADUR 3243-1 is used in intermediate epoxy coats for multilayer protective coating systems.
ARADUR 3243-1 is used in high-build epoxy coatings for durable surface protection.

ARADUR 3243-1 is used in solvent-free epoxy coatings for areas where solvent emissions must be minimized.
ARADUR 3243-1 is used in low-emission flooring formulations for enclosed application environments.
ARADUR 3243-1 is used in industrial coating systems requiring a relatively long working time.
ARADUR 3243-1 is used in large-area flooring projects where sufficient application time is necessary.

ARADUR 3243-1 is used with suitable liquid bisphenol A epoxy resins.
ARADUR 3243-1 is used with ARALDITE GY 250 in coating and flooring formulations.
ARADUR 3243-1 is used with ARALDITE GY 783 in solvent-free epoxy systems.
ARADUR 3243-1 is used with ARALDITE GY 793 in industrial flooring and protective coating formulations.

ARADUR 3243-1 is used in epoxy systems requiring a favorable resin-to-hardener mixing ratio.
ARADUR 3243-1 is used in formulations where low hardener viscosity improves mixing efficiency.
ARADUR 3243-1 is used in filled epoxy compounds containing mineral aggregates or functional fillers.
ARADUR 3243-1 is used in highly filled mortar systems where good wetting and processing are required.

ARADUR 3243-1 is used in epoxy coatings designed to produce smooth surfaces with high gloss.
ARADUR 3243-1 is used in formulations where resistance to water spotting is required.
ARADUR 3243-1 is used in light-colored epoxy systems requiring reduced discoloration.
ARADUR 3243-1 is used in indoor flooring systems requiring good resistance to yellowing.

ARADUR 3243-1 is used in chemical-resistant floor coatings for laboratories and technical rooms.
ARADUR 3243-1 is used in flooring systems for workshops exposed to oils and process chemicals.
ARADUR 3243-1 is used in maintenance areas requiring durable and cleanable epoxy surfaces.
ARADUR 3243-1 is used in production environments where coatings must withstand regular cleaning.

ARADUR 3243-1 is used in protective coatings for concrete containment areas.
ARADUR 3243-1 is used in epoxy linings for secondary containment structures.
ARADUR 3243-1 is used in chemical storage areas where broad resistance is required.
ARADUR 3243-1 is used in utility rooms and service corridors requiring durable floor protection.

ARADUR 3243-1 is used in epoxy repair compounds for rebuilding worn concrete edges.
ARADUR 3243-1 is used in patching compounds for industrial floors and ramps.
ARADUR 3243-1 is used in resin-rich repair mortars requiring strong adhesion.
ARADUR 3243-1 is used in repair systems intended to restore mechanically damaged surfaces.

ARADUR 3243-1 is used in epoxy grouts for anchoring and structural filling applications.
ARADUR 3243-1 is used in non-shrink resin grout formulations containing selected aggregates.
ARADUR 3243-1 is used in machinery-base grouting systems requiring good load transfer.
ARADUR 3243-1 is used in industrial anchoring compounds where controlled curing is required.

ARADUR 3243-1 is used in protective coatings for steel structures and fabricated metal components.
ARADUR 3243-1 is used in epoxy coatings for pipes, tanks, supports, and maintenance equipment.
ARADUR 3243-1 is used in coating systems for marine and coastal industrial environments.
ARADUR 3243-1 is used in infrastructure maintenance coatings requiring good adhesion and durability.

ARADUR 3243-1 is used in high-solids epoxy paints designed for reduced solvent content.
ARADUR 3243-1 is used in two-component coating systems applied by roller, brush, or suitable spray equipment.
ARADUR 3243-1 is used in epoxy coatings requiring good film formation at ambient temperature.
ARADUR 3243-1 is used in coating formulations requiring balanced pot life and cure development.

ARADUR 3243-1 is used in clear or lightly pigmented seal coats for epoxy flooring.
ARADUR 3243-1 is used in broadcast flooring systems to bind and seal decorative aggregates.
ARADUR 3243-1 is used in quartz-filled flooring compounds for commercial and industrial surfaces.
ARADUR 3243-1 is used in colored-flake flooring systems requiring a smooth protective top layer.

ARADUR 3243-1 is used in skid-resistant flooring systems containing graded mineral particles.
ARADUR 3243-1 is used in ramps and loading areas requiring mechanically durable coatings.
ARADUR 3243-1 is used in pedestrian and light-vehicle traffic areas requiring abrasion resistance.
ARADUR 3243-1 is used in industrial floors requiring a balance of toughness and surface appearance.

ARADUR 3243-1 is used in epoxy systems designed for good all-round chemical resistance.
ARADUR 3243-1 is used in formulations requiring resistance to water, oils, detergents, and diluted chemicals.
ARADUR 3243-1 is used in protective coatings exposed to intermittent chemical splashes.
ARADUR 3243-1 is used in industrial maintenance systems where long-term coating integrity is required.

ARADUR 3243-1 is used in formulations requiring good mechanical properties after complete cure.
ARADUR 3243-1 is used in coatings intended to resist impact, abrasion, and routine service loads.
ARADUR 3243-1 is used in epoxy mortars requiring hardness and cohesive strength.
ARADUR 3243-1 is used in floor toppings intended for demanding industrial service.

ARADUR 3243-1 is used in nonylphenol-free epoxy formulations.
ARADUR 3243-1 is used where formulators seek an alternative to conventional nonylphenol-containing hardeners.
ARADUR 3243-1 is used in modern epoxy systems designed around responsible formulation practices.
ARADUR 3243-1 is used in professional two-component products manufactured under controlled industrial conditions.

ARADUR 3243-1 is used in coating formulations requiring excellent flow and surface smoothness.
ARADUR 3243-1 is used in epoxy systems where low viscosity supports efficient pigment and filler incorporation.
ARADUR 3243-1 is used in formulations requiring easy blending with compatible liquid epoxy resins.
ARADUR 3243-1 is used in industrial products requiring consistent curing-agent distribution.

ARADUR 3243-1 is used in flooring systems applied over properly prepared concrete.
ARADUR 3243-1 is used in coatings applied over suitably prepared steel surfaces.
ARADUR 3243-1 is used in repair systems where substrate cleanliness and surface preparation are carefully controlled.
ARADUR 3243-1 is used in professional epoxy applications performed according to validated formulation procedures.

ARADUR 3243-1 is used in factory floors requiring a glossy and easy-to-clean finish.
ARADUR 3243-1 is used in technical facilities where a continuous, joint-free surface is preferred.
ARADUR 3243-1 is used in service areas requiring durable protection against wear and contamination.
ARADUR 3243-1 is used in industrial epoxy systems where appearance and performance must be maintained together.

DESCRIPTION

ARADUR 3243-1 is a formulated, modified cycloaliphatic polyamine curing agent for epoxy resins.
ARADUR 3243-1 is supplied as a clear to light-yellow liquid with a characteristic amine odor.
ARADUR 3243-1 is designed primarily for ambient-temperature curing of compatible liquid epoxy resins.
ARADUR 3243-1 functions by reacting its active amine groups with epoxy groups to form a crosslinked thermoset network.

ARADUR 3243-1 has a relatively low viscosity that supports easy mixing, pumping, metering, and application.
ARADUR 3243-1 provides effective wetting of pigments, fillers, mineral aggregates, and prepared substrates.
ARADUR 3243-1 is especially suitable for solvent-free and high-solids epoxy formulations.
ARADUR 3243-1 assists formulators in producing smooth and glossy cured surfaces.

ARADUR 3243-1 provides a comparatively long working time for large-area flooring and coating applications.
ARADUR 3243-1 develops useful curing properties while maintaining practical application time.
ARADUR 3243-1 produces cured systems with good mechanical properties when correctly formulated and processed.
ARADUR 3243-1 contributes to hardness, adhesion, durability, and resistance to service-related wear.

ARADUR 3243-1 provides good all-round chemical resistance in properly cured epoxy systems.
ARADUR 3243-1 supports the preparation of protective films with resistance to water spotting.
ARADUR 3243-1 can produce light-colored cured films with good resistance to yellowing.
ARADUR 3243-1 is suitable for applications in which surface appearance is an important performance criterion.

ARADUR 3243-1 is compatible with selected liquid epoxy resins, including ARALDITE GY 250, GY 783, and GY 793.
ARADUR 3243-1 is commonly evaluated at a resin-to-hardener ratio of approximately 100:50 parts by weight with suitable epoxy resins.
ARADUR 3243-1 has an amine value typically within the range of 280–360 mg KOH/g.
ARADUR 3243-1 has a viscosity typically within the range of 220–360 mPa·s at 25°C.

ARADUR 3243-1 has a density of approximately 1.01 g/cm³ at 20°C.
ARADUR 3243-1 has a flash point of at least 110°C when measured by a closed-cup method.
ARADUR 3243-1 provides a gel time of approximately 60 minutes at 23°C in a specified ARALDITE GY 783 system mixed at 100:50 parts by weight.
ARADUR 3243-1 remains a reactive chemical product despite its relatively high flash point.

ARADUR 3243-1 is a proprietary formulated mixture rather than a single pure chemical compound.
ARADUR 3243-1 therefore does not have one representative molecular formula or molecular weight.
ARADUR 3243-1 may contain reactive amine components whose individual identities and concentrations are defined in the applicable regional safety data sheet.
ARADUR 3243-1 should always be evaluated using the current supplier documentation for the intended country and application.

ARADUR 3243-1 is formulated without nonylphenol.
ARADUR 3243-1 is intended for professional and industrial use.
ARADUR 3243-1 must be accurately proportioned with the selected epoxy resin to obtain the intended cure and performance.
ARADUR 3243-1 may produce incomplete curing, surface defects, or reduced properties when an incorrect mixing ratio is used.

ARADUR 3243-1 should be thoroughly mixed with the resin until the blend is uniform.
ARADUR 3243-1 should be processed within the established pot life of the complete formulation.
ARADUR 3243-1 may react more rapidly as the mixed mass, ambient temperature, or application thickness increases.
ARADUR 3243-1 may generate heat during reaction with epoxy resins because epoxy curing is exothermic.

ARADUR 3243-1 should be protected from moisture, carbon dioxide, contamination, and prolonged exposure to air.
ARADUR 3243-1 may develop surface contamination or altered performance if stored in improperly sealed containers.
ARADUR 3243-1 should be stored under dry conditions in its sealed original packaging.
ARADUR 3243-1 should not be exposed to direct sunlight during storage.

ARADUR 3243-1 is stable for at least one year when stored correctly between 2°C and 40°C, subject to the expiry date on the original container.
ARADUR 3243-1 should be homogenized when necessary according to supplier recommendations before use.
ARADUR 3243-1 should not be diluted or modified without prior compatibility testing.
ARADUR 3243-1 should be used only after confirming its suitability through formulation trials and performance testing.

PROPERTIES

Product Name: ARADUR 3243-1
Product Type: Modified cycloaliphatic polyamine hardener
Chemical Family: Polyamines
Function: Epoxy curing agent and hardener
Chemical Form: Proprietary formulated mixture
Physical Form: Liquid
Appearance: Clear liquid
Color: Light yellow
Odor: Characteristic amine odor
CAS Number: No single CAS number assigned to the formulated product
EC Number: No single EC number assigned to the formulated product
Molecular Formula: Not applicable
Molecular Weight: Not applicable
Amine Value: 280–360 mg KOH/g
Viscosity at 25°C: 220–360 mPa·s
Density at 20°C: Approximately 1.01 g/cm³
Flash Point: Minimum 110°C
Recommended Mix Ratio: Approximately 100 parts epoxy resin to 50 parts ARADUR 3243-1 by weight with selected resin systems
Mix Ratio with ARALDITE GY 783: 50 g/equivalent
Gel Time: Approximately 60 minutes at 23°C using 250 g of ARALDITE GY 783/ARADUR 3243-1 at 100:50 parts by weight
Primary Applications: Solvent-free floorings, epoxy resin mortars, and anti-corrosion coatings
Surface Characteristics: Smooth, glossy, and light-colored cured films
Performance Characteristics: Good curing, good mechanical properties, chemical resistance, UV resistance, and reduced tendency to water spotting
Formulation Claim: Nonylphenol-free
Storage Temperature: 2–40°C
Shelf Life: At least 12 months when stored correctly in the original sealed container
Storage Conditions: Dry conditions, protected from direct sunlight, moisture, heat, and contamination

FIRST AID

Inhalation:
Move the exposed person to fresh air immediately.
Keep the affected person at rest in a position comfortable for breathing.
Seek medical attention if coughing, breathing difficulty, dizziness, or respiratory irritation develops.
Provide artificial respiration only by trained personnel if breathing has stopped.
Do not use mouth-to-mouth resuscitation when chemical contamination is suspected; use an appropriate barrier device.
Contact a poison center or physician when significant inhalation exposure has occurred.

Skin Contact:
Remove contaminated clothing, shoes, watches, and other personal items immediately.
Wash the affected skin thoroughly with plenty of water and soap.
Continue washing for at least 15 minutes or as directed by medical personnel.
Do not use solvents or reactive neutralizing chemicals to clean the skin.
Seek immediate medical attention if burns, persistent irritation, pain, redness, or sensitization symptoms occur.
Wash contaminated clothing thoroughly before reuse and discard contaminated leather items when effective decontamination is not possible.

Eye Contact:
Immediately rinse the eyes cautiously with clean, lukewarm water for at least 15 minutes.
Hold the eyelids open and ensure that all eye surfaces are thoroughly flushed.
Remove contact lenses if present and easy to do without delaying irrigation.
Continue rinsing during transportation for medical treatment when possible.
Obtain immediate examination and treatment from an ophthalmologist or emergency physician.
Do not apply ointments, neutralizing chemicals, or medication unless directed by qualified medical personnel.

Ingestion:
Rinse the mouth carefully with water.
Do not induce vomiting unless specifically instructed by a poison center or physician.
Never give anything by mouth to an unconscious or convulsing person.
Keep the affected person at rest and obtain immediate medical advice.
If vomiting occurs naturally, keep the head below hip level to reduce the risk of aspiration.
Contact a poison center or emergency medical service and provide the product label or safety data sheet.

Note to Physicians:
Treat symptomatically and provide supportive care.
The product is a reactive amine-based formulation and may cause significant irritation or corrosive injury depending on the exposure.
Chemical injury may require prolonged irrigation, pain management, and specialist evaluation.
Observe the patient for delayed respiratory, skin, gastrointestinal, or ocular effects.
There is no known product-specific antidote.
Consult the current regional safety data sheet and a poison information center for additional treatment guidance.

HANDLING AND STORAGE

Handling:
Use ARADUR 3243-1 only in professional industrial environments with appropriate risk controls.
Read the current safety data sheet before opening or using the product.
Wear chemical-resistant gloves, protective clothing, safety goggles, and face protection appropriate to the operation.
Avoid all contact with skin, eyes, and clothing.
Avoid breathing vapor, mist, aerosol, or heated-product fumes.
Keep containers closed when the product is not being transferred or used.
Prevent contamination with water, acids, oxidizing agents, and incompatible chemicals.
Use clean, dry, compatible equipment for transfer, metering, and mixing.
Do not eat, drink, smoke, or store food in handling areas.
Wash hands and exposed skin thoroughly after handling and before breaks.

Ventilation:
Provide effective general mechanical ventilation in processing and storage areas.
Use local exhaust ventilation at points where vapor, mist, aerosol, or heated fumes may be generated.
Maintain airborne exposure below applicable occupational exposure limits for all identified components.
Use appropriate respiratory protection when ventilation cannot adequately control exposure.
Ensure that respiratory protective equipment is selected, fitted, and maintained by qualified personnel.
Avoid confined-space entry unless the atmosphere has been tested and appropriate controls are in place.

Storage:
Store ARADUR 3243-1 in a dry place in the tightly sealed original container.
Maintain a recommended storage temperature between 2°C and 40°C.
Protect the product from direct sunlight, excessive heat, frost, moisture, and atmospheric contamination.
Store away from acids, oxidizing agents, reactive chemicals, food, beverages, and animal feed.
Keep containers upright, properly labeled, and protected against physical damage.
Use appropriate secondary containment in storage and dispensing areas.
Do not store the product in unapproved or incorrectly labeled containers.
Follow the expiry date printed on the original packaging.
Rotate inventory according to the first-in, first-out principle.
Consult the supplier before using material that has exceeded its stated shelf life or has changed in appearance.

Spill and Leak Procedures:
Restrict access to the affected area and keep unprotected personnel away.
Provide adequate ventilation and eliminate unnecessary sources of ignition.
Wear chemical-resistant gloves, protective clothing, eye protection, and suitable respiratory protection.
Stop the leak when this can be done safely.
Prevent spilled product from entering drains, soil, surface water, or groundwater.
Contain the liquid with inert, non-combustible absorbent material such as sand, earth, or a suitable chemical absorbent.
Collect the absorbed material using non-sparking tools and place it in a compatible, labeled waste container.
Do not return recovered spilled material to the original container.
Clean the contaminated surface using an appropriate industrial cleaning procedure.
Dispose of waste and contaminated absorbents through an authorized waste contractor in accordance with local regulations.
Notify environmental authorities when a significant release reaches drains, waterways, or soil.

Handling Precautions:
Verify the resin-to-hardener ratio before preparing each batch.
Mix the resin and ARADUR 3243-1 thoroughly, including material from the sides and bottom of the mixing container.
Avoid preparing unnecessarily large mixed batches because the curing reaction may generate substantial heat.
Do not seal containers containing freshly mixed resin and hardener because pressure may develop.
Use mixed material within the validated pot life of the complete formulation.
Do not apply the product to wet, contaminated, or inadequately prepared substrates.
Prevent moisture and carbon dioxide exposure that may contribute to surface defects or amine blush.
Keep emergency eyewash stations and safety showers readily accessible.
Train all operators in chemical handling, spill response, first aid, and waste disposal procedures.
Use the current Huntsman technical data sheet and regional safety data sheet as the controlling documents for production, transportation, storage, and emergency response.