Sodium sulphide. Sodium sulphide nonahydrate (Na2S 9H2O) in a watch glass. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5166 px × 3434 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |