Molekula
Sodium phosphate, dibasic heptahydrate
Sodium phosphate, dibasic heptahydrate is a water-soluble inorganic compound used as a buffer, stabilizer, and pH adjuster in pharmaceuticals, food, and laboratory applications. It appears as colorless crystals or white powder. CAS: 7782-85-6, Molecular formula: PO4HNa2 · 7H2O, Molecular weight: 268.07 g/mol, Storage: Ambient, Signal word: Warning. Molekula supplies Sodium phosphate, dibasic heptahydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Sodium phosphate, dibasic heptahydrate is a water-soluble inorganic compound used as a buffer, stabilizer, and pH adjuster in pharmaceuticals, food, and laboratory applications. It appears as colorless crystals or white powder. CAS: 7782-85-6, Molecular formula: PO4HNa2 · 7H2O, Molecular weight: 268.07 g/mol, Storage: Ambient, Signal word: Warning. Molekula supplies Sodium phosphate, dibasic heptahydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Conclusion | Conforms to USP Specifications |
| Heavy metals | ≤ 10ppm |
| pH | 8.7 - 9.3 (5% aq.) |
| Loss on Drying | 45.0 - 50.0 % |
| Chlorides | ≤ 0.02% |
| Assay (anhydrous basis) | ≥ 98.0% |
| Sulphates | ≤ 0.05% |
| Water Insolubles | ≤ 0.4% |
| Arsenic (As) | ≤ 0.0003% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 60 months |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| CAS Number | 7782-85-6 |
| Molecular Formula | PO4HNa2 · 7H2O |
| Molecular Weight | 268.07 |
| SMILES | O.O.O.O.O.O.O.OP(=O)([O-])[O-].[Na+].[Na+] |
| REACH Code | Y113 |
| HTS Code | 2835220000 |
| Tariff Code | 2835220000 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye 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
- P337+313 If eye irritation persists 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 phosphate, dibasic heptahydrate used for?
It is commonly used as a buffer in biochemical applications and in food processing as a pH regulator and emulsifier.
What is the chemical formula and molecular weight?
The formula is PO4HNa2 · 7H2O with a molecular weight of 268.07 g/mol.
How should sodium phosphate, dibasic heptahydrate be stored?
Store at ambient temperature, protected from moisture and heat.
What grade is available?
Available in reagent grade; other grades may be available upon request.
Can Molekula supply it in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA); additional documentation such as SDS is available upon request.
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.