- Al+S→Al2S3Al+S→Al2S3{A}{l} + {S} → {A}{l}_{2}{S}_{3}
- 2Al+3S→Al2S32Al+3S→Al2S3{2}{A}{l} + {3}{S} → {A}{l}_{2}{S}_{3}
- 2Al+S→Al2S{2}{A}{l} + {S} → {A}{l}_{2}{S}
- 3Al+4S→Al3S4{3}{A}{l} + {4}{S} → {A}{l}_{3}{S}_{4}