Sodium phosphate dibasic dihydrate
Sodium phosphate dibasic dihydrate (CAS: 10028-24-7), with the molecular formula Na2HPO4 · 2H2O and a molecular weight of 177.99 g/mol, is an inorganic salt supplied by Tech Serve Solutions. This white crystalline powder is soluble in water and commonly used as a buffering agent, a laboratory reagent, and in various chemical synthesis applications. Its properties make it a reliable component in analytical and industrial processes.
- IUPAC
- sec-Sodium phosphate,Disodium hydrogen phosphate dihydrate,Disodium phosphate,di-Sodium hydrogen phosphate dihydrate
- Synonyms
- Disodium hydrogen phosphate dihydrateDisodium phosphateDi-Sodium hydrogen phosphate dihydratesec-Sodium phosphate
Chemical Synthesis
Used as a reagent or buffer in various organic and inorganic synthesis procedures. Its controlled pH provides a stable environment for specific reactions.
Laboratory Reagent
Employed in analytical chemistry and biochemical research for preparing buffer solutions and as a component in diagnostic tests. Its solubility and pH characteristics are crucial for these applications.
Buffering Agent
Effectively maintains pH stability in aqueous solutions, making it suitable for applications requiring a neutral to slightly alkaline environment.
| Molecular weight | 177.99 |
|---|---|
| Linear formula | Na2HPO4 · 2H2O |
| Assay | 98.5-101% (calc. to the dried substance) |
| Solubility | H2O: soluble0.5 M at 20 °C, clear, colorless |
| pH | 9.0-9.4 (20 °C, 1%) |
| Loss on drying | 19.5-21% loss on drying, 130 °C |
| Impurities tested | reducing matter, compliesresidual solvents, complies≤0.001% heavy metals (as Pb)≤1% NaH2PO4(calc. to dried subst.) |
| Suitability | complies for appearance of solution |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Cation traces | As: ≤2 mg/kgFe: ≤10 mg/kg |
| Anion traces | chloride (Cl-): ≤50 mg/kgsulfate (SO42-): ≤100 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Pharmacopeia | testing conforms to Pharmacopeia |
|---|---|
| Uv Absorption | λ: 260 nm Amax: 0.03λ: 280 nm Amax: 0.03 |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium Phosphate Dibasic Dihydrate used for?
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Sodium phosphate dibasic dihydrate is primarily used as a buffering agent, a laboratory reagent in analytical and biochemical research, and in various chemical synthesis applications.
What is the CAS number and chemical formula for Sodium Phosphate Dibasic Dihydrate?
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The CAS number is 10028-24-7, and the chemical formula is Na2HPO4 · 2H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium Phosphate Dibasic Dihydrate with an assay of 98.5-101% (calculated to the dried substance). TSS does not represent this product as USP/BP/EP grade.
How should Sodium Phosphate Dibasic Dihydrate be handled safely?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used if dust exposure is a risk. Refer to the safety data sheet for full details.
Is Sodium Phosphate Dibasic Dihydrate a controlled substance?
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The provided data does not indicate that Sodium Phosphate Dibasic Dihydrate is a controlled substance.
How is Sodium Phosphate Dibasic Dihydrate packed, shipped, and exported?
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This product is classified under UN 3077, Hazard Class 9, Packing Group III for transport. Tech Serve Solutions adheres to all regulations for safe packing, shipping, and international export.
How can I request a sample or quote for Sodium Phosphate Dibasic Dihydrate?
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Please contact our sales team through the website to request a sample or a quotation for Sodium Phosphate Dibasic Dihydrate.
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