Sodium selenite pentahydrate
Also known as: Selenious acid disodium salt pentahydrate, Disodium selenite pentahydrate, Sodium selenite hydrate (2:1:5), Selenious acid, disodium salt, pentahydrate, disodium,selenite,pentahydrate, sodium selenite hydrate(2:1:5), UNII-0WV4L961ZV, MFCD00149173, EINECS 233-267-9, Selenite (pentahydrate)
Sodium selenite pentahydrate (CAS 26970-82-1) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H10Na2O8Se and a molecular weight of 263.014 g/mol. Key property: a melting point of 710ºC (1310 deg F) (decomposes). It is classified under GHS with signal word Danger and hazard statements H300, H317 — May cause an allergic skin reaction and H331 — Toxic if inhaled. It is listed by 2 suppliers, from 1.40 to 2,640.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 26970-82-1
- Jingsj CID
- J-48268-8
- Molecular Formula
- H10Na2O8Se
- Molecular Weight
- 263.014 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to OrderPlatform-operated | 99% 500g | ¥700.00 | $0.21 /gBest ¥1.40/g CNY | CN China MOQ 500g | |
In Stock | ≥98% 500g | ¥1,840.00 | $0.55 /g ¥3.68/g CNY | CN China MOQ 500g | |
In Stock | ≥98% 100g | ¥534.00 | $0.8 /g ¥5.34/g CNY | CN China MOQ 100g |
Physicochemical Properties
| Melting Point | 710ºC (1310 deg F) (decomposes) |
|---|---|
| Exact Mass | 263.933624 |
| PSA | 109.34000 |
GHS Safety & Compliance
- H300
- H317 — May cause an allergic skin reaction
- H331 — Toxic if inhaled
- H411 — Toxic to aquatic life with long lasting effects
Frequently Asked Questions
What is the CAS number of Sodium selenite pentahydrate?
The CAS number of Sodium selenite pentahydrate is 26970-82-1.
What are the molecular formula and molecular weight of Sodium selenite pentahydrate?
Sodium selenite pentahydrate has molecular formula H10Na2O8Se and molecular weight 263.014 g/mol.
Which suppliers offer Sodium selenite pentahydrate?
2 supplier(s) listed; reference unit price ¥1.40–2640.00 /g.
Is Sodium selenite pentahydrate hazardous?
Sodium selenite pentahydrate has GHS signal word Danger and hazard statements H300; H317 — May cause an allergic skin reaction; H331 — Toxic if inhaled.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Sodium selenite pentahydrate (CAS 26970-82-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48268-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.