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Ammonium Benzoate
Other Names: Benzoic acid ammonium salt
CAS Number: 1863-63-4
Chemical Formula: C₇H₉NO₂
Molar Mass: 139.15 g/mol
Appearance: White crystalline powder
Ammonium benzoate is the ammonium salt of benzoic acid, appearing as a white, odorless crystalline powder. It is soluble in water and alcohol, and used in various industrial and laboratory applications due to its mild antimicrobial and preservative properties.
Chemical and Physical Properties
Density: ~1.32 g/cm³
Melting Point: ~198–200°C (with decomposition)
Solubility in Water: Freely soluble
Solubility in Other Solvents: Soluble in alcohol
Odor: Odorless or faint
Applications
Preservative Use: Acts as a mild antimicrobial agent in non-food technical applications.
Corrosion Inhibition: Used in anti-corrosion formulations for metal treatment.
Chemical Synthesis: Serves as an intermediate in organic synthesis and benzoate-related reactions.
Analytical Chemistry: Occasionally used in laboratory analysis or reagent preparation.
Safety
Signal Word: Warning
H302 (79.8%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (33.4%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (41%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (32.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Handling and Storage
Storage Conditions: Store in a tightly sealed container in a dry, cool, and well-ventilated area. Keep away from moisture and incompatible materials.
Handling Precautions: Avoid generation of dust and contact with eyes. Use personal protective equipment.