Sodium phosphate dibasic heptahydrate
Sodium phosphate dibasic heptahydrate (CAS 7782-85-6), with the chemical formula Na2HPO4 · 7H2O and a molecular weight of 268.07 g/mol, is a hydrated inorganic salt. This versatile compound is a white crystalline powder, highly soluble in water. It is primarily utilised as a buffering agent in biochemical and chemical applications, and as a laboratory reagent for various analytical and synthetic procedures.
- IUPAC
- Disodium hydrogen phosphate heptahydrate,Disodium phosphate
- Synonyms
- Disodium hydrogen phosphate heptahydrateDisodium phosphate
Buffer Solutions
Serves as a key component in the preparation of buffer solutions due to its ability to maintain stable pH levels in the slightly alkaline range. This is critical for many biochemical assays and processes.
Chemical Synthesis
Used as a reagent in various chemical synthesis pathways. Its specific chemical properties allow it to participate in or facilitate certain reactions, particularly in inorganic chemistry.
Laboratory Reagent
Employed as a general laboratory reagent for a wide array of analytical procedures and research applications. Its consistent purity makes it suitable for demanding scientific work.
Biochemical Applications
Integral to numerous biochemical research areas, where maintaining precise pH is essential for enzyme activity and biological sample integrity.
| Molecular weight | 268.07 |
|---|---|
| Linear formula | Na2HPO4 · 7H2O |
| Assay | ≥99.99% trace metals basis |
| Grade | ACS reagent |
| Density | 1.68 g/mL at 25 °C(lit.) |
| pH | 8.7-9.3 (25 °C, 5%) |
| Vapour density | 4.9 (vs air) |
| Impurities tested | ≤0.005% insolubles<100 ppm total metallic impurities |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Cation traces | Fe: ≤0.001%heavy metals: ≤0.001% |
| Anion traces | chloride (Cl-): ≤0.001%sulfate (SO42-): ≤0.005% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Ph Range | 8.7 - 9.3 |
|---|
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 heptahydrate used for?
+
Sodium phosphate dibasic heptahydrate is used as a buffering agent in biochemical and chemical applications, as a laboratory reagent for analytical and synthetic procedures, and in various biochemical research areas.
What is the CAS number and chemical formula for this product?
+
The CAS number is 7782-85-6 and the chemical formula is Na2HPO4 · 7H2O.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this product in ACS reagent grade with an assay of ≥99.99% on a trace metals basis. TSS does not represent this product as USP, BP, EP or pharmacopoeia grade.
How should Sodium phosphate dibasic heptahydrate be handled?
+
Handle with appropriate personal protective equipment, including eyeshields and gloves. Use a P1 (EN143) or N95 (US) respirator filter if airborne exposure is a concern. Refer to the Safety Data Sheet for comprehensive handling information.
Is this chemical shipped internationally?
+
Yes, Tech Serve Solutions is a global supplier and exporter of chemicals, including Sodium phosphate dibasic heptahydrate, and can facilitate international shipments.
How can I request a sample or a quote?
+
Please contact our sales team through the website or by phone to request a sample or a formal quotation for Sodium phosphate dibasic heptahydrate.
▶ Related products
1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis
1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis