1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde
[CAS# 68002-25-5]

Identification

• Classification: Catalysts and additives >> Polymer
• Name: 1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde
• Synonyms: melamine formaldehyde; formaldehyde 1,3,5-triazine-2,4,6-triamine
• Molecular Formula: C₄H₈N₆O
• Molecular Weight: 156.15
• CAS Registry Number: 68002-25-5
• EC Number: 614-205-3
• SMILES: C=O.C1(=NC(=NC(=N1)N)N)N

Properties

• Density: 1.03 g/mL (25 °C)
• Flash point: 65 °C

Safety Data

• Hazard Symbols: GHS07;GHS08 Danger
• Risk Statements: H302+H312-H317-H350
• Safety Statements: P201-P202-P261-P264-P270-P272-P280-P301+P312-P302+P352-P308+P313-P322-P330-P333+P313-P363-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Flammable liquids	Flam. Liq.	3	H226
Acute toxicity	Acute Tox.	4	H312
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Skin sensitization	Skin Sens.	1	H317
Acute toxicity	Acute Tox.	4	H302
Carcinogenicity	Carc.	1B	H350

Discovery and Applications

1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, widely recognized as melamine-formaldehyde resin, is a thermosetting polymer extensively used across diverse industrial and commercial applications. This polymer is synthesized by reacting melamine (1,3,5-triazine-2,4,6-triamine) with formaldehyde in controlled conditions to produce a durable, chemically resistant, and thermally stable material. Its versatility and exceptional physical properties have established it as a critical component in numerous sectors.

The origins of melamine-formaldehyde resin trace back to early 20th-century research exploring the reactivity of formaldehyde with nitrogen-rich compounds. By the 1930s, practical methods to produce melamine-formaldehyde polymers were developed, revolutionizing materials science and paving the way for advanced thermosetting plastics. The innovation offered significant improvements in performance over earlier urea-formaldehyde resins, particularly in durability and moisture resistance.

Melamine-formaldehyde resin’s most notable application is in high-pressure laminates used for countertops, tabletops, and flooring. These laminates combine aesthetic appeal with exceptional wear resistance, owing to the polymer’s capacity to form strong crosslinked structures under heat and pressure. Its resistance to heat, stains, and abrasions makes it an ideal choice for both residential and commercial spaces.

The polymer is also a crucial component in coatings, where it acts as a crosslinking agent. When combined with other polymers, such as acrylics or alkyds, melamine-formaldehyde resin enhances the hardness, gloss, and chemical resistance of coatings. These properties are particularly valued in automotive paints, industrial finishes, and protective coatings for metal and wood surfaces.

In molding applications, melamine-formaldehyde resin is used to produce lightweight, heat-resistant, and durable products such as electrical insulators, dinnerware, and household goods. The polymer’s ability to withstand high temperatures and its resistance to deformation ensure its suitability for these demanding uses.

Additionally, the polymer is utilized in adhesives, paper coatings, and textile treatments. In adhesives, it provides strong bonding and moisture resistance, while in paper and textiles, it imparts improved strength, dimensional stability, and water repellence.

Despite its widespread utility, the environmental and health concerns associated with formaldehyde emissions during the synthesis and curing processes have driven efforts to develop safer and more sustainable alternatives. Modern advancements in the production of melamine-formaldehyde resins focus on reducing formaldehyde content and utilizing renewable raw materials, ensuring continued relevance in environmentally conscious markets.

The remarkable combination of strength, durability, and adaptability has made 1,3,5-triazine-2,4,6-triamine, polymer with formaldehyde, an indispensable material in modern manufacturing and consumer goods industries.

References

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