Ammonium citrate dibasic
Ammonium citrate dibasic (CAS 3012-65-5) is a chemical compound with the formula HOC(CO2H)(CH2CO2NH4)2 and a molecular weight of 226.18 g/mol. Supplied as a JIS special grade, it is primarily utilised in chemical synthesis and as a biochemical reagent. Its solubility in water and buffer-forming properties make it a valuable component in various laboratory applications, contributing to its use as a building block and chelator in research and development.
- IUPAC
- Ammonium hydrogencitrate,Citric acid ammonium salt,Diammonium hydrogen citrate

Chemical Synthesis Intermediate
Ammonium citrate dibasic serves as a useful intermediate and building block in organic synthesis. It can be employed in reactions requiring a source of citrate or ammonium ions in a buffered system.
Biochemical Reagent
As a biochemical reagent, it finds application in laboratory settings for various analytical and preparative procedures. Its properties are suitable for use in buffer solutions and as a chelating agent.
Chelating Agent
The compound exhibits chelating properties, allowing it to form complexes with metal ions. This characteristic is beneficial in applications where metal ion sequestration or control is required.
| Molecular weight | 226.18 |
|---|---|
| Linear formula | HOC(CO2H)(CH2CO2NH4)2 |
| Assay | ≥98.0% (T) |
| Grade | JIS special grade |
| Solubility | H2O: soluble1 M at 20 °C, clear, colorless |
| pH | 4.5-5.5 (20 °C, 5%) |
| Vapour density | 1.8 (vs air) |
| Impurities tested | ≤2% water |

Hazard statements
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37 |
| Safety statements (S) | 26 |
| Cation traces | Ca: ≤50 mg/kgCd: ≤50 mg/kgCo: ≤50 mg/kgCu: ≤50 mg/kgFe: ≤50 mg/kgK: ≤500 mg/kgNa: ≤100 mg/kgNi: ≤50 mg/kgPb: ≤50 mg/kgZn: ≤50 mg/kg |
| Anion traces | chloride (Cl-): ≤50 mg/kgsulfate (SO42-): ≤50 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Availability | available only in Japan |
|---|---|
| Uv Absorption | λ: 260 nm Amax: ≤0.05λ: 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 Ammonium citrate dibasic used for?
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Ammonium citrate dibasic is used as an intermediate in chemical synthesis, a biochemical reagent, and a chelating agent in laboratory applications.
What are the CAS number and chemical formula for Ammonium citrate dibasic?
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The CAS number is 3012-65-5 and the chemical formula is HOC(CO2H)(CH2CO2NH4)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ammonium citrate dibasic in JIS special grade with an assay of ≥98.0% (T), containing ≤2% water. We do not represent this product as USP, BP, or EP grade.
How should Ammonium citrate dibasic be handled safely?
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Ammonium citrate dibasic is classified with GHS07 and a Warning signal word, carrying hazard statements H319 (Causes serious eye irritation) and H335 (May cause respiratory irritation). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation.
Is Ammonium citrate dibasic available for export?
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Ammonium citrate dibasic is available only in Japan. Tech Serve Solutions is a global supplier and exporter of fine chemicals, and availability for specific regions should be confirmed.
How can I request a quote or sample for Ammonium citrate dibasic?
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To request a quote or sample for Ammonium citrate dibasic, please contact our sales department through the website or by phone, providing your specific requirements.
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