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Send EmailCyclohexanamine, Cyclo Hexan Amine, Amino Cyclo Hexane, Hexahydro Aniline, Hexahydro Benzenamine, CAS 108-91-8
🌟 Cyclohexylamine (CAS 108-91-8)
A) Physical and Chemical Properties
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Chemical Formula: C₆H₁₃N
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Molar Mass: 99.17 g/mol
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Appearance: Clear to yellowish liquid
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Odor: Strong, fishy amine-like
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Boiling Point: ~134.5 °C
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Melting Point: −17.7 °C
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Density: ~0.865 g/cm³
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Solubility: Miscible with water, ethanol, acetone, ethers
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pKa: ~10.64 (weak base)
B) Applications
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Rubber Industry: Precursor to sulfenamide accelerators for vulcanization
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Corrosion Inhibition: Used in boiler systems and metal protection
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Pharmaceuticals: Intermediate for drug synthesis
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Sweetener Production: Key raw material for cyclamate synthesis
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Agrochemicals: Intermediate in pesticide formulations
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Solvent Systems: Used in specialty solvent blends
C) Production Method
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Hydrogenation of Aniline: $$ \text{C}_6\text{H}_5\text{NH}_2 + 3\text{H}_2 → \text{C}6\text{H}{11}\text{NH}_2 $$ Catalyzed by nickel or cobalt-based systems
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Alkylation of Ammonia: Using cyclohexanol under high pressure and temperature
D) Reactions
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Acid-base: Forms salts with strong acids (e.g., HCl → cyclohexylamine hydrochloride)
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Amide formation: Reacts with acid chlorides to form cyclohexylamides
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N-alkylation: Can be further functionalized for specialty amines
E) Alternatives
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Diethylamine, Isopropylamine – for similar base strength
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Morpholine – for corrosion inhibition
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Aniline – aromatic analog with different reactivity
F) Synonyms
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Cyclohexanamine, Aminocyclohexane, Hexahydroaniline
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Hexahydrobenzenamine, C₆H₁₃N
G) Common Names
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“Rubber accelerator base”
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“Cyclamate precursor”
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“Boiler amine” (in corrosion contexts)
H) Usage Ratios
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Rubber: ~0.5–2% in accelerator systems
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Corrosion inhibition: ppm levels depending on system volume
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Cyclamate synthesis: Stoichiometric with sulfamic acid
