Ammonium benzoate, molecular formula: CsevenHnineNOtwoThe appearance is colorless flake crystal, soluble in water, alcohol and glycerin.Can be used as chemistryAnalytical reagentProduction of electrolytic capacitors and pharmaceuticals for use as preservatives and analytical reagents.
Appearance: ammonium benzoate (1863-63-4) is white or light yellow flake crystal or powder.Ammonia smell or ammonium benzoate smell.Gradually decompose in the air to release ammonia.Soluble in water, ethanol, glycerin, etc.
Melting point: 192-198 ℃ (dec.) (lit.)
Sublimation point：160℃
Density: 1.26g/cmthree（20℃）
Solubility: H2O: 1 M at 20 ° C, clear, colorless
Water solubility: solid
Sensitivity: Moisture Sensitive[1]
Calculate chemical data
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1. Reference value of drainage parameter calculation (XlogP):
2. Number of hydrogen bond donors: 1
3. Number of hydrogen bond receptors: 2
4. Number of rotatable chemical bonds: 0
5. Number of tautomers:
6. Topological molecular polar surface area (TPSA): 41.1
11. Determine the number of atomic structure centers: 0
12. Number of uncertain atomic structure centers: 0
13. Determine the number of chemical bond structure centers: 0
14. Number of uncertain chemical bond structure centers: 0
15. Number of covalent bond units: 2[1]
chemical property
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Category: Poison.
Toxicity grade: high toxicity.
Acute toxicity: oral-RatLD50: 825 mg/kg;Oral LD50 in mice: 235 mg/kg.
Flammability hazard characteristics: combustible;Toxic due to combustionnitrogen oxide And ammonia smoke.
preparation
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100gBenzoic acidDissolve in 80mL 20% ammonia water, heat and filter if necessary.Then put the solution on hold and let it cool to precipitate and crystallize.After suction filtration, it is clamped between filter paper for drying.The purity is about 99%[1]。
Use 3: preservative, disinfectant, adhesive, aluminum measurement.
First aid measures
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Skin contact: Take off contaminated clothes and wash with flowing water.
Eye contact: lift the eyelid, use flowing water ornormal salinerinse.Get medical attention.
Inhalation: leave the site to fresh air.asdyspnea, give oxygen.Get medical attention.
Ingestion: drink enough warm water to induce vomiting.Get medical attention.
Fire fighting measures
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Hazard characteristics: no special combustion and explosion characteristics.Toxic sulfide fume is generated due to high thermal decomposition.Hazardous combustion products: Natural decomposition products are unknown.
Extinguishing method: firefighters must wear full body fire and gas protective clothing and extinguish the fire upwind.When putting out a fire, try to move the container from the fire site to an open place.
Emergency Management
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Emergency treatment: isolate the leakage contaminated area and restrict access.It is recommended that emergency handling personnel wearDust mask(Full face mask), wear anti-virus clothing.Collect with a clean shovel in a dry, clean, covered container and transfer to a safe place.In case of large leakage, collect and recycle or transport to waste disposal site for disposal.
Disposal and storage
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Operation precautions: closed operation, local exhaust.Operators must be specially trained and strictly abide by the operating procedures.Recommended for operatorsSelf suction filtering dust maskWear chemical safety goggles, anti poison penetration work clothes and rubber gloves.Avoid dust generation.Avoid contact with oxidants.Handle with care to prevent package damage.Provide leakage emergency treatment equipment.Empty containers may leave harmful substances.
Precautions for storage: store in a cool and ventilated warehouse.Keep away from kindling and heat sources.It shall be stored separately from oxidant and shall not be mixed.The storage area shall be equipped with appropriate materials to contain leakage[2]。
