Description
Ammonium benzoate solution is the aqueous form of the ammonium salt of benzoic acid. It is a clear, colorless to pale yellow liquid with excellent solubility and mild aromatic odor. This compound combines the preservative properties of benzoic acid with the solubility and buffering effects of ammonium ions, making it highly valuable in industrial and commercial formulations.
Widely used as a corrosion inhibitor in automotive and industrial fluids, ammonium benzoate helps prevent the oxidation and degradation of metal surfaces. In the oil and gas sector, it serves as a key additive in drilling and completion fluids. It also plays a vital role in water treatment applications and is compatible with many antifreeze, hydraulic, and deicing fluid systems.
Because of its environmentally friendly profile, ammonium benzoate is favored in formulations that demand low toxicity, biodegradability, and minimal environmental impact. Its buffering action helps regulate pH in a variety of aqueous systems, enhancing product performance and stability.
Chemical Properties
Chemical Name: Ammonium Benzoate
Synonyms: Benzoic acid ammonium salt, C₆H₅COONH₄
Molecular Formula: C₇H₉NO₂
Molecular Weight: 139.15 g/mol
CAS Number: 1863-63-4
EC Number: 217-468-6
Appearance: Clear to pale yellow liquid
Odor: Slight aromatic odor
Solubility: Completely soluble in water
Density: ~1.10 g/cm³ (varies with concentration)
pH (1% solution): Typically 6.5–7.5
Concentration Range: Available from 25% to 50% w/w
Applications
Corrosion Inhibitor: Protects metal surfaces in automotive coolant systems, deicing fluids, and metalworking fluids.
Oilfield Chemicals: Used in drilling muds and brines as a preservative and corrosion control agent.
Water Treatment: Regulates pH and extends system life by reducing biofouling and oxidation.
Antifreeze and Coolant Formulations: Enhances stability and corrosion protection in propylene glycol and ethylene glycol systems.
Deicing and Runway Maintenance Products: Provides corrosion protection in potassium and sodium-based liquid deicers.
Adhesives & Sealants: Added to formulations to increase shelf life and control microbial growth.
Industries of Use
Automotive & Antifreeze Fluids:
Ammonium benzoate solution is widely incorporated into antifreeze and radiator protection fluids to prevent rust and electrochemical degradation. It is effective in both light-duty and heavy-duty vehicle systems.
Oil & Gas Industry:
Used in upstream applications such as drilling and stimulation fluids, where it serves to stabilize chemical blends and inhibit microbial contamination.
Water Treatment & HVAC Systems:
Ideal for closed-loop and open-loop water systems, ammonium benzoate provides both antimicrobial action and corrosion inhibition, improving operational efficiency.
Aviation & Transportation:
Added to runway and aircraft deicing solutions to prevent corrosion of aluminum and steel components, especially in glycol-based systems.
Chemical Manufacturing & Coatings:
Functions as a stabilizer, pH buffer, and corrosion-preventing agent in coatings, adhesives, sealants, and polymer emulsions.
Storage Conditions
Store in tightly sealed HDPE or stainless-steel containers.
Storage temperature: 5–30°C
Keep away from strong oxidizers, acids, and heat sources.
Protect from direct sunlight and moisture.
Shelf life: 12 months in recommended conditions.
Packaging
20 L HDPE drum
200 L HDPE barrel
Packaging is UN-rated and meets international transport and chemical safety standards. Labels include product identification, hazard markings, and batch tracking codes.
Safety & Handling
Not classified as hazardous under normal use.
Use gloves, goggles, and proper ventilation when handling.
Avoid contact with skin and eyes.
Flush with water in case of accidental contact.
Dispose of in accordance with local environmental regulations.
