Storage Condition : -20℃, light and moisture sensitive
Shipping Condition : blue ice
Product Contents:
Sodium disulfide (Na2S2) | : 1 x 100 mg |
Sodium trisulfide (Na2S3) | : 1 x 100 mg |
Sodium tetrasulfide (Na2S4) | : 1 x 100 mg |
Product Description:
-SulfoBiotics- Sodium polysulfide set is the associated type of Sodium polysulfides (Na2Sn) supplied with 100 mg each of sodium disulfide (Na2S2), sodium trisulfide (Na2S3), sodium tetrasulfide (Na2S4).

Fig. 1 Structures of Sodium polysulfides (Na2Sn) and the pKa values
Data:

Fig. 2 UV spectra of 1 mmol/l Na2Sn aqueous solution
1) Y. Kimura, Y. Mikami, K. Osumi, M. Tsugane, J. Oka, and H. Kimura, "Polysulfides are possible H2S-derived signaling molecules in rat brain", FASEB J., 2013, 27, 2451.
2) S. Koike, Y. Ogasawara, N. Shibuya, H. Kimura, and K. Ishii, "Polysulfide exerts a protective effect against cytotoxicity caused by t-buthylhydroperoxide through Nrf2 signaling in neuroblastoma cells", FEBS Lett., 2013, 587, 3548.
3) E. R. DeLeon, Y. Gao, E. Huang, M. Arif, N. Arora, A. Divietro, S. Patel, and K. R. Olson , "A case of mistaken identity: are reactive oxygen species actually reactive sulfide species?", American Journal of Physiology: Regulatory, Integrative and Comparative Physiology ., 2015, 310, (7), 549.