Sodium selenite
Also known as: Disodium selenite, Sodium selenite anhydrous, Selenious acid disodium salt, Sodium selenite(IV)
Sodium selenite (CAS 10102-18-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na2O3Se and a molecular weight of 172.938 g/mol. Key property: a melting point of 350 °C. It is classified under GHS with signal word Danger and hazard statements H300, H330 — Fatal if inhaled and H315 — Causes skin irritation. It is listed by 2 suppliers, from 2.00 to 26.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 10102-18-8
- Jingsj CID
- J-36001-0
- Molecular Formula
- Na2O3Se
- Molecular Weight
- 172.938 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to OrderPlatform-operated | 99% 500g | ¥1,000.00 | $0.3 /gBest ¥2.00/g CNY | CN China MOQ 500g | |
In Stock | CP 50g | ¥1,300.00 | $3.89 /g ¥26.00/g CNY | CN China MOQ 50g |
Physicochemical Properties
| Melting Point | 350 °C |
|---|---|
| Exact Mass | 173.880814 |
| PSA | 63.19000 |
| Additional Property | 950 g/L (20 ºC) |
GHS Safety & Compliance
- H300
- H330 — Fatal if inhaled
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- H411 — Toxic to aquatic life with long lasting effects
Frequently Asked Questions
What is the CAS number of Sodium selenite?
The CAS number of Sodium selenite is 10102-18-8.
What are the molecular formula and molecular weight of Sodium selenite?
Sodium selenite has molecular formula Na2O3Se and molecular weight 172.938 g/mol.
Which suppliers offer Sodium selenite?
2 supplier(s) listed; reference unit price ¥2.00–26.00 /g.
Is Sodium selenite hazardous?
Sodium selenite has GHS signal word Danger and hazard statements H300; H330 — Fatal if inhaled; H315 — Causes skin irritation.
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 (CAS 10102-18-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36001-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.