Is Polyethylene Polyamine CAS 68131-73-7 a single molecule or a commercial ethyleneamine mixture?

It is a commercial mixture of higher ethyleneamines, commonly abbreviated PEPA, rather than a single molecule with one fixed molecular formula. It is not directly interchangeable with defined amines such as DETA or TETA. Quote and order it by CAS number, amine value, AHEW and intended use.

What is Polyethylene Polyamine used for?

It is mainly used as an epoxy curing agent or co-hardener, in polyamide or wet-strength resin synthesis, and as a nitrogen-containing intermediate for lubricant additives, corrosion inhibitors, chelating agents and water-treatment chemicals. The selected grade depends on the resin formulation and amine-hydrogen demand.

Which specifications should be agreed for Polyethylene Polyamine?

Agree amine value, amine hydrogen equivalent weight, total nitrogen, viscosity at a stated temperature, water, density, pH at a stated dilution, appearance and color with the test methods. A purity percentage is not sufficient for a mixed ethyleneamine stream.

What packaging and delivery points should be confirmed for Polyethylene Polyamine?

Confirm drum, IBC or bulk format, net quantity, moisture and carbon-dioxide protection, seal condition, color acceptance, sampling, unloading connection and any nitrogen blanket. PEPA is hygroscopic, alkaline and reactive toward acidic contamination, so container and receiving conditions matter.

What are the typical physical properties of Polyethylene Polyamine CAS 68131-73-7?

PEPA is a yellow-to-amber viscous liquid with an ammoniacal odour, density around 1.01-1.08 g/cm3 and a pH near 11-12 in a dilute aqueous solution. It is miscible with water and common polar solvents, with boiling point above 200 C and flash point above 110 C. Confirm lot data against the agreed specification.

Polyethylene Polyamine CAS 68131-73-7

Polyethylene Polyamine (PEPA), CAS 68131-73-7, is a commercial mixture of higher ethyleneamines used as an epoxy curing agent or co-hardener, and as a precursor for polyamide resins, wet-strength resins, lubricant additives and water-treatment chemicals. It is quoted by amine value, amine hydrogen equivalent weight (AHEW), viscosity and water content rather than a single purity percentage. Confirm the required specification, packaging and documentation before ordering; COA, TDS and SDS are available on request.

CAS: 68131-73-7
Synonyms: Polyethylene Polyamine; Polyethylene Polyamines; Ethylenepolyamines; PEPA
Molecular Formula: Not specified
Grade: Specification by amine value, AHEW, viscosity and water content.
Package: Confirm packaging compatible with the offered form and destination requirements.

Request a quote

Share:

Product Description

1 Physicochemical Properties

2 Applications

2.1 Industrial & Chemical Manufacturing

2.2 Water Treatment

2.3 Research & Synthesis

3 Quality Assurance (QA/QC)

4 Storage & Safety

4.1 Storage Conditions

4.2 Safety Handling & PPE

Physicochemical Properties

Parameter	Specification	Test Method
Appearance	Yellow to amber viscous liquid	Visual Inspection
Odor	Ammoniacal odor	—
Total Nitrogen Content	≥ 33.0%	Elemental Analysis
Density (20°C)	1.01 – 1.08 g/cm³	Hydrometer Method
Boiling Point	> 200°C (at 760 mmHg)	Distillation
Flash Point	> 110°C (Closed Cup)	ISO 2719
Solubility	Miscible with water, ethanol, and ether.	—
pH Value	11 – 12 (1% aqueous solution)	pH Meter

Applications

Our Polyethylene Polyamine is engineered to meet the rigorous demands of various downstream industries:

Industrial & Chemical Manufacturing

Epoxy Curing Agents: Acts as a highly effective cross-linking agent and hardener for epoxy resins used in coatings, adhesives, and floorings.
Paper Industry: Used in the synthesis of wet-strength resins (PAE resins) to improve the durability of paper products.
Fuel & Oil Additives: Serves as a dispersant and ashless detergent in lubricating oils and fuel systems.

Water Treatment

Chelating Agents: Due to its polyamine structure, it effectively chelates heavy metal ions, making it suitable for wastewater treatment and sludge dewatering applications.

Research & Synthesis

Chemical Intermediates: Utilized in the synthesis of surfactants, corrosion inhibitors, and textile auxiliaries.

Quality Assurance (QA/QC)

At Industrochem, quality is not just a promise; it is a quantified standard. Manufacturing follows documented quality management procedures with batch testing and full lot traceability.

Batch Consistency: Every batch undergoes rigorous testing using Gas Chromatography (GC) for composition analysis and titration methods for amine value verification.
Traceability: We maintain full lot traceability from raw material intake to final packaging.
Pre-Shipment Inspection: We support third-party testing (SGS/BV) upon request to ensure the cargo meets your specific requirements before it leaves the port.

For defined low-molecular-weight polyamine raw materials, see Diethylenetriamine and Tetraethylene Pentamine.

Storage & Safety

Storage Conditions

Store in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources.
Keep containers tightly closed to prevent moisture absorption (hygroscopic) and reaction with carbon dioxide in the air.
Incompatible with strong acids, oxidizing agents, and halogenated hydrocarbons.

Safety Handling & PPE

PEPA is classified as corrosive. Strict adherence to safety protocols is required:

Respiratory Protection: Use a NIOSH/MSHA-approved respirator if ventilation is inadequate.
Eye Protection: Chemical safety goggles and a face shield are mandatory to prevent eye damage.
Skin Protection: Wear chemical-resistant gloves (Butyl rubber or Neoprene) and protective clothing.
Emergency: In case of contact with eyes, rinse immediately with plenty of water for at least 15 minutes and seek medical advice.

FAQ - Technical & Supply Chain

Q:
Is Polyethylene Polyamine CAS 68131-73-7 a single molecule or a commercial ethyleneamine mixture?

A: It is a commercial mixture of higher ethyleneamines, commonly abbreviated PEPA, rather than a single molecule with one fixed molecular formula. It is not directly interchangeable with defined amines such as DETA or TETA. Quote and order it by CAS number, amine value, AHEW and intended use.
Q:
What is Polyethylene Polyamine used for?

A: It is mainly used as an epoxy curing agent or co-hardener, in polyamide or wet-strength resin synthesis, and as a nitrogen-containing intermediate for lubricant additives, corrosion inhibitors, chelating agents and water-treatment chemicals. The selected grade depends on the resin formulation and amine-hydrogen demand.
Q:
Which specifications should be agreed for Polyethylene Polyamine?

A: Agree amine value, amine hydrogen equivalent weight, total nitrogen, viscosity at a stated temperature, water, density, pH at a stated dilution, appearance and color with the test methods. A purity percentage is not sufficient for a mixed ethyleneamine stream.
Q:
What packaging and delivery points should be confirmed for Polyethylene Polyamine?

A: Confirm drum, IBC or bulk format, net quantity, moisture and carbon-dioxide protection, seal condition, color acceptance, sampling, unloading connection and any nitrogen blanket. PEPA is hygroscopic, alkaline and reactive toward acidic contamination, so container and receiving conditions matter.
Q:
What are the typical physical properties of Polyethylene Polyamine CAS 68131-73-7?

A: PEPA is a yellow-to-amber viscous liquid with an ammoniacal odour, density around 1.01-1.08 g/cm3 and a pH near 11-12 in a dilute aqueous solution. It is miscible with water and common polar solvents, with boiling point above 200 C and flash point above 110 C. Confirm lot data against the agreed specification.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language