Citric acid
Citric acid (CAS 77-92-9), with the linear formula HOC(COOH)(CH₂COOH)₂, is a weak organic acid crucial in biochemistry and extensively used across various industries. Known for its chelating properties and acidity, it serves as a key ingredient in food and beverages, pharmaceuticals, and cleaning agents. Tech Serve Solutions supplies high-purity Citric Acid suitable for analytical and research applications.
Food and Beverage Industry
Citric acid acts as a flavouring agent, acidulant, and preservative in a wide range of food and drink products, including confectionery, jams, and soft drinks. Its ability to enhance taste and prolong shelf life makes it indispensable.
Pharmaceutical Formulations
Utilised as an excipient in pharmaceutical preparations, citric acid contributes to the stability and efficacy of medications. It often serves as an effervescent agent and pH adjuster in tablets and solutions.
Chemical Synthesis and Analysis
As a versatile organic compound, citric acid is employed in various chemical syntheses and analytical procedures. Its buffering capacity and chelating abilities are valuable in laboratory settings.
Cleaning and Detergent Products
The chelating properties of citric acid make it effective in removing mineral scale and rust. It is frequently incorporated into household and industrial cleaning formulations for its descaling action.
| Molecular weight | 192.12 |
|---|---|
| Linear formula | HOC(COOH)(CH2COOH)2 |
| Assay | ≥99.5% |
| Grade | ACS reagent |
| Solubility | H2O: soluble1 M at 20 °C, clear, colorless |
| pH | 1.0-2.0 (25 °C, 1 M in H2O) |
| Loss on drying | ≤0.5% loss on drying, 110 °C |
| Melting point | 153-159 °C(lit.) |
| Impurities tested | Substances carbonizable by hot sulfuric acid, passes test |
| Suitability | plant cell culture tested |
Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36 |
| Safety statements (S) | 26 |
| Cation traces | Fe: ≤3 ppmPb: ≤2 ppm |
| Anion traces | chloride (Cl-): ≤0.001%oxalate (C2O42-): passes test (limit about 0.003%)phosphate (PO43-): ≤0.001%sulfate (SO42-): ≤0.002% |
| Ignition residue | ≤0.02% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Expl Lim | 8 %, 65 °F |
|---|---|
| Pka  | (1) 3.13, (2) 4.76, (3) 6.4 |
| Gene Information | human ... SRC(6714) |
| Uv Absorption | λ: 260 nm Amax: 0.20λ: 280 nm Amax: 0.10 |
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 Citric Acid (CAS 77-92-9) used for?
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Citric acid is widely used in the food and beverage industry as an acidulant and flavour enhancer, in pharmaceuticals as an excipient, in cleaning products as a descaler, and in chemical analysis and synthesis due to its buffering and chelating properties.
What is the CAS number and formula for Citric Acid?
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The CAS number for Citric Acid is 77-92-9, and its linear formula is HOC(COOH)(CH₂COOH)₂.
What grade and purity does Tech Serve Solutions supply for Citric Acid?
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Tech Serve Solutions supplies Citric Acid in ACS reagent grade with an assay of ≥99.5%.
What are the safety considerations when handling Citric Acid?
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Citric Acid is classified with GHS07 symbol and a Warning signal word, indicating it causes serious eye irritation (H319). Handle with appropriate personal protective equipment including eyeshields, gloves, and a dust mask type N95. Ensure good ventilation and P305 + P351 + P338 precautions are followed.
How is Citric Acid packed, shipped, or exported by TSS?
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Tech Serve Solutions exports Citric Acid globally. Products are carefully packed according to industry standards to ensure safe transit and compliance with international shipping regulations.
How can I request a quote or sample for Citric Acid?
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To request a quote or a sample of Citric Acid, please contact our sales team through the website or by phone. Our experts will assist you promptly.
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