| Melting point | 50 °C |
| Boiling point | 920°C |
| density | 1.427 |
| storage temp. | 2-8°C |
| form | Solid |
| color | colorless or slightly yellow |
| Specific Gravity | 1.427 |
| Water Solubility | 180 G/L (25 ºC) |
| Sensitive | Hygroscopic |
| Merck | 14,8681 |
| Stability: | Stable. Hygroscopic. Light-sensitive. Flammable. Avoid exposure to air, acids, oxidizers, strong bases, strong reducing agents, most common metals. |
| InChIKey | GDQBTRYKLOBMLL-UHFFFAOYSA-N |
| CAS DataBase Reference | 1313-84-4(CAS DataBase Reference) |
| EPA Substance Registry System | Sodium sulfide (Na2S), nonahydrate (1313-84-4) |
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