| Formula / Notation | (C12H22N2O2)n |
|---|---|
| CAS Number | 32131-17-2 |
| Molecular Weight | Variable (polymer) |
| Melting Point | 265 °C |
| Boiling Point | Decomposes |
| Density | 1.14 g/cm³ |
| Solubility | Insoluble in water |
| Appearance | white to off-white solid |
| Also Known As | polyamide 66; PA66; nylon 66; Zytel; Ultramid A |
| Category | Polymers & Plastics |
What is Nylon 6,6?
Nylon 6,6 is a polyamide produced by condensation polymerisation of hexamethylenediamine and adipic acid. The name "6,6" refers to the six carbon atoms in each monomer. It was the first commercially produced nylon, developed by DuPont in the 1930s. Compared to Nylon 6, it has a slightly higher melting point, lower moisture absorption, and greater stiffness, making it preferred for engineering applications.
Formula & Notation
IUPAC Name: poly(hexamethylene adipamide)
Other Names / Synonyms: polyamide 66; PA66; nylon 66; Zytel; Ultramid A
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 265 °C |
| Boiling Point | Decomposes |
| Density | 1.14 g/cm³ |
| Molecular Weight | Variable (polymer) |
| Solubility | Insoluble in water |
| Appearance | white to off-white solid |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Nylon 6,6 is a polyamide produced by condensation polymerisation of hexamethylenediamine and adipic acid. The name "6,6" refers to the six carbon atoms in each monomer. It was the first commercially produced nylon, developed by DuPont in the 1930s. Compared to Nylon 6, it has a slightly higher melting point, lower moisture absorption, and greater stiffness, making it preferred for engineering applications.
Automotive parts (engine covers, air intake manifolds). Electrical connectors and switch components. Textile fibres (stockings, ropes). Industrial bearings and gears. Toothbrush bristles. Parachute fabrics.
Low acute toxicity in solid form. Burns releasing toxic fumes. Higher processing temperatures required than Nylon 6. Consult SDS before processing.
The formula or notation for Nylon 6,6 is: (C12H22N2O2)n