Overview
Tetraethylenepentamine (CAS 112-57-2 ), commonly known as TEPA or Tetren, is a polyamine used across coatings, polymer, and textile industries as a curing agent, crosslinker, and pH modifier.
Its multiple reactive amine groups make it a functional building block for epoxy systems, chelating formulations, and specialty chemical synthesis. In epoxy coatings and adhesives, TEPA acts as a hardener.
This material crosslinks resin networks to deliver durable, chemically resistant films suited for industrial and protective coating applications. Polymer manufacturers use it as a reactive intermediate.
It is essential in producing polyamide resins and flame-retardant additives, where its nitrogen-rich structure contributes to char formation under heat exposure. In textile and paper processing, it functions well.
TEPA serves as a wet-strength resin precursor and fiber treatment agent, improving substrate durability and dye uptake. Personal care formulators incorporate it at low concentrations for pH adjustment.
This is particularly useful in rinse-off products where controlled alkalinity is required. TEPA is supplied as a viscous amber liquid, typically in drum and IBC quantities for industrial buyers.
Technical grade is the standard commercial offering, with purity specifications commonly ranging from 95% to 98% depending on the supplier. Some producers offer blended or diluted formulations.
These variations target specific epoxy curing or chelation applications. The product is handled according to strict safety protocols to ensure stability and performance in diverse manufacturing environments.
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Physical Properties
| Melting Point | -30 °C |
| Boiling Point | 340.30 °C @ Press: 760 Torr |
| Density | 0.9980 g/cm³ @ Temp: 20 °C |
| Flash Point | 365 °F |
| Appearance | Tetraethylenepentamine is a yellow, viscous liquid. |
| Color | Clear |
| Odor | ammonia odor |
| Form | Liquid |
| Water Solubility | SOLUBLE |
| Vapor Pressure | <0.01 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.505(lit.) |
| pH | 11.8 (20g/l, H2O, 20℃) |
Safety & Handling
Danger GHS05 GHS07 GHS09 GHS08 GHS06 Hazard Statements H302 Harmful if swallowed H311 Toxic in contact with skin H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H330 Fatal if inhaled H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H411 Toxic to aquatic life with long lasting effects H302+H312 Harmful if swallowed or in contact with skin Precautionary Statements P233 Keep container tightly closed. 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. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P320 Specific treatment is urgent (see … on this label). P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P391 Collect spillage. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P333+P317 Get emergency medical help. P342+P316 Get emergency medical help immediately. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29212900 |
| UN Number | 2320 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 112-57-2
- EC Number
- 203-986-2
- Mol. Weight
- 189.30
- HS Code
- 29212900
- Category
- Flavors & Fragrances