• A polysilazane (silazane-based polymer) is a material having a polymeric chain structure based on alternating silicon and nitrogen atoms. Polysilazanes have have both linear, cyclic, and fused cyclic chain segments.
• Polysilazanes are colorless to pale yellow liquids or solid materials. Conditional of manufacturing, the liquids often contain dissolved ammonia that can be detected by smell.
• Polysilazanes are useful among other things for the preparation of silicon nitride, Si3N4, by pyrolysis. Silicon nitride is a hard material and is useful in forming fibres for reinforcement of composite materials.