Molekula
Sodium selenite pentahydrate 50% w/v aqueous solution
Sodium selenite pentahydrate 50% w/v aqueous solution is a selenium-containing compound used in nutritional supplements, research, and industrial applications requiring selenium delivery. It is a clear, colorless to pale yellow liquid. CAS: 26970-82-1, Molecular formula: Na₂O₃Se · 5H₂O, Molecular weight: 263.01 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Sodium selenite pentahydrate 50% w/v aqueous solution from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Sodium selenite pentahydrate 50% w/v aqueous solution is a selenium-containing compound used in nutritional supplements, research, and industrial applications requiring selenium delivery. It is a clear, colorless to pale yellow liquid. CAS: 26970-82-1, Molecular formula: Na₂O₃Se · 5H₂O, Molecular weight: 263.01 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Sodium selenite pentahydrate 50% w/v aqueous solution from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless to pale yellow solution |
| Assay (Mass Balance) | 49-51% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | I |
| Shelf Life | 24 months |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| CAS Number | 26970-82-1 |
| Molecular Formula | Na2O3Se · 5H2O |
| Molecular Weight | 263.01 |
| SMILES | O.O.O.O.O.[O-][Se](=O)[O-].[Na+].[Na+] |
| EC / UN Number | 3440 |
| REACH Code | Y110 |
| HTS Code | 28429090 |
| Tariff Code | 2842901090 |
Safety & GHS
-
Explosive
GHS01
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- EUH031 Contact with acids liberates toxic gas
- H300 Fatal if swallowed
- H317 May cause an allergic skin reaction
- H331 Toxic if inhaled
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is sodium selenite pentahydrate 50% w/v aqueous solution used for?
It is primarily used in biochemical research, as a selenium source in cell culture media, and in the synthesis of selenium-based compounds.
What is the chemical formula and molecular weight?
The formula is Na2O3Se · 5H2O with a molecular weight of 263.01 g/mol.
How should this solution be stored?
Store at ambient temperature, away from direct sunlight and incompatible materials.
What grade is available?
This product is available as a research-grade aqueous solution.
Can Molekula supply it in bulk?
Yes, Molekula can supply sodium selenite pentahydrate 50% w/v aqueous solution in bulk quantities—please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.