Lingotum antimonii est genus metalli gravis non ferrei, solidum argenteum album nitidum et nitens. Duo allotropi sunt: flavum stabile est ad minus 90 gradus, et metallicum stabile antimonii.
Punctum liquefactionis 630℃, densitas 6.62g/cm3, conductio caloris mala.
Pondus netum cuiusque massae: 22 ± 3 kg, dimensiones: 21 × 21 Fundus: 17 × 17 Altitudo: 9 cm, in capsis ligneis condita, cum pondere neto 1000 ± 50 kg per capsam;
| Gradus | Contentum impuritatis ≤ |
| As | Fe | S | Cu | Se | Pb | Bi | Cd | Summa |
| Sb99.90 | 0.010 | 0.015 | 0.040 | 0.0050 | 0.0010 | 0.010 | 0.0010 | 0.0005 | 0.10 |
| Sb99.70 | 0.050 | 0.020 | 0.040 | 0.010 | 0.0030 | 0.150 | 0.0030 | 0.0010 | 0.30 |
| Sb99.65 | 0.100 | 0.030 | 0.060 | 0.050 | — | 0.300 | — | — | 0.35 |
| Sb99.50 | 0.150 | 0.050 | 0.080 | 0.080 | — | — | — | — | 0.50 |