Molekula
Sodium phosphate, tribasic dodecahydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sodium phosphate, tribasic dodecahydrate is a water-soluble inorganic compound used as a buffering agent, detergent builder, and food additive. It is commonly employed in laboratory applications, water treatment, and industrial formulations. Available in powder or crystalline form, it has a molecular weight of 380.12 g/mol, a CAS number of 10101-89-0, and should be stored at ambient temperatures. The signal word is Warning. Molekula supplies Sodium phosphate, tribasic dodecahydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — $57.00 per pack
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1 kg — $148.20 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or off-white powder |
| Loss on Drying | 45.0% to 57.0% |
| Assay | ≥97.0% |
| Water insoluble matter | ≤0.2% |
| Arsenic (As) | ≤0.005% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 89966139 |
| CAS Number | 10101-89-0 |
| IUPAC Name | trisodium;phosphate;dodecahydrate |
| Molecular Formula | Na3PO4 · 12H2O |
| Molecular Weight | 380.12 |
| Exact Mass | 380.0495 |
| SMILES | O.O.O.O.O.O.O.O.O.O.O.O.[O-]P(=O)([O-])[O-].[Na+].[Na+].[Na+] |
| InChIKey | ASTWEMOBIXQPPV-UHFFFAOYSA-K |
| InChI | InChI=1S/3Na.H3O4P.12H2O/c;;;1-5(2,3)4;;;;;;;;;;;;/h;;;(H3,1,2,3,4);12*1H2/q3*+1;;;;;;;;;;;;;/p-3 |
| PubChem CID | 61473 |
| REACH Code | Y113 |
| HTS Code | 28352930 |
| Tariff Code | 2835293000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P310 Immediately call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
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.
Synonyms
- FRESH AQUA
- H24Na3O16P
- Na3PO4.12H2O
- Phosphoric acid, sodium salt, hydrate (1:3:12)
- Phosphoric acid, trisodium salt, dodeahydrate
- Phosphoric acid, trisodium salt, dodecahydrate
- Sodium phosphate dodecahydrate
- Trisodium phosphate (tert) dodecahydrate
- Trisodium phosphate dodecahydrate
- VEGE AQUA
Frequently asked questions
What is sodium phosphate, tribasic dodecahydrate used for?
It is commonly used as a buffering agent in biochemical applications and in the formulation of detergents and cleaning agents.
What is the chemical formula and molecular weight?
The formula is Na3PO4 · 12H2O with a molecular weight of 380.12 g/mol.
How should sodium phosphate, tribasic dodecahydrate be stored?
It should be stored at ambient temperature, protected from moisture and heat.
What grade is available for this product?
This product is available in reagent grade, suitable for laboratory and industrial use.
Can Molekula supply this in bulk?
Yes, Molekula can supply sodium phosphate, tribasic dodecahydrate in bulk quantities upon request.
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.