Sulfide ya sodiyumu mu mazi irimo H₂S yashongeshejwe, HS⁻, S²⁻, hamwe na sulfide z'icyuma zishonga zikomoka kuri aside ziba mu bintu bikomeye bihagaze, hamwe na sulfide zidatandukanijwe n'izidafite umwimerere n'izikomoka ku bimera. Amazi arimo sulfide akunze kugaragara nk'umukara kandi afite impumuro mbi, ahanini bitewe no kurekurwa kwa gaze ya H₂S buri gihe. Abantu bashobora kubona sulfide ya hydrogen mu kirere ku gipimo kiri hasi ya 8 μg/m³, mu gihe igipimo cya H₂S mu mazi ari 0.035 μg/L. Sulfide ya sodiyumu.

Hari ububiko bwa sodium sulfide mu byambu bya Qingdao, Tianjin, na Longkou, bushobora koherezwa ako kanya kandi bugakwirakwizwa ku isi yose. Kanda hano kugira ngo ubone ibiciro bigabanyirijwe ibiciro.