Sodium citrate tribasic dihydrate
Sodium citrate tribasic dihydrate (CAS 6132-04-3) is a white, crystalline powder widely recognised for its buffering capabilities and chelating properties. With a molecular weight of 294.10 g/mol, this salt of citric acid is highly soluble in water. It is frequently employed as a pH buffer, a sequestrant in cleaning products, and a component in laboratory reagents, particularly for biochemical applications and amino acid analysis.
- IUPAC
- Citric acid trisodium salt dihydrate,Trisodium citrate dihydrate
- Synonyms
- Citric acid trisodium salt dihydrateTrisodium citrate dihydrate
Buffering Agent
Sodium citrate tribasic dihydrate effectively maintains stable pH levels in various solutions. Its buffer range is typically between 7.0 and 9.0, making it suitable for biological and chemical systems requiring neutral to slightly alkaline conditions.
Chelating Agent
This compound acts as a chelator, binding to metal ions and preventing them from interfering with chemical processes or causing precipitation. It is used in cleaning formulations and industrial applications to sequester metal ions.
Laboratory Reagent
Its high purity and buffering capacity make it invaluable in biochemical research and diagnostics. It is specifically suitable for amino acid analysis and serves as a component in biological buffers.
Sequestrant
Used in detergents and cleaning agents, sodium citrate tribasic dihydrate helps to soften water by binding calcium and magnesium ions, thereby enhancing cleaning efficiency and preventing scale formation.
| Molecular weight | 294.10 |
|---|---|
| Linear formula | HOC(COONa)(CH2COONa)2 · 2H2O |
| Assay | ≥98% (titration) |
| Form | powder |
| Colour | white |
| Solubility | H2O: soluble100 mg/mL |
| pH | 7.0-9.0 (25 °C, 5% in solution) |
| Melting point | >300 °C(lit.) |
| Impurities tested | ≤0.003% Ammonia (NH3)≤0.005% Insoluble matter |
| Suitability | suitable for amino acid analysis |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Cation traces | Ca: ≤0.005%Fe: ≤5 ppmheavy metals (as Pb): ≤5 ppm |
| Anion traces | chloride (Cl-): ≤0.003%sulfate (SO42-): ≤0.005% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Uv Absorption | λ: 260 nm Amax: 0.01λ: 280 nm Amax: 0.01 |
|---|
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 citrate tribasic dihydrate used for?
+
Sodium citrate tribasic dihydrate (CAS 6132-04-3) is primarily used as a buffering agent to control pH, a chelating agent to bind metal ions, and a sequestrant in cleaning formulations. It is also employed as a reagent in biochemical research, including amino acid analysis.
What are the CAS number and formula for Sodium citrate tribasic dihydrate?
+
The CAS number for Sodium citrate tribasic dihydrate is 6132-04-3. Its linear formula is HOC(COONa)(CH2COONa)2 · 2H2O.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Sodium citrate tribasic dihydrate with an assay of ≥98% by titration. This is a suitable grade for laboratory and research applications. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated in the product data.
How should Sodium citrate tribasic dihydrate be handled safely?
+
Handle Sodium citrate tribasic dihydrate with appropriate personal protective equipment, including eyeshields and gloves. If dust is generated, use a type N95 (US) or type P1 (EN143) respirator filter. Consult the Safety Data Sheet for comprehensive safety information.
Is Sodium citrate tribasic dihydrate a controlled substance?
+
Based on the provided data, Sodium citrate tribasic dihydrate (CAS 6132-04-3) is not listed as a controlled substance.
How is Sodium citrate tribasic dihydrate typically supplied and exported?
+
Tech Serve Solutions, as a global supplier, packages and exports chemicals like Sodium citrate tribasic dihydrate according to international shipping regulations and customer requirements, ensuring safe transit.
How can I request a quote or sample for Sodium citrate tribasic dihydrate?
+
To request a quote or sample for Sodium citrate tribasic dihydrate, please contact the Tech Serve Solutions sales team through our website or by phone, referencing the product name and CAS number (6132-04-3).
▶ Related products
5-Sulfosalicylic acid dihydrate
HO3SC6H3-2-(OH)CO2H 2H2O
Acids & Bases
Calcium hydroxide
Ca(OH)2
Acids & Bases
Acetic acid-12C2
12CH312CO2H
Acids & Bases
Acetic acid-13C2
13CH313CO2H
Acids & Bases
Acetic acid-13C2,d4
Acids & Bases
Acetic acid-17O2
CH3C17O2H
Acids & Bases
Acetic acid-18O2
CH3C18O2H
Acids & Bases
Acetic acid-2,2,2-d3
2-d3
Acids & Bases▶ 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