Cyclohexylamine (CHA, C₆H₁₁NH₂) is an organic compound with a cyclohexane ring bonded to an amino group. It has several industrial and niche applications due to its alkalinity, solubility, and reactivity. Here are its primary uses:
1. Water Treatment (Boiler & Cooling Systems)
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pH Stabilizer & Corrosion Inhibitor:
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Neutralizes acidic condensate in steam boiler systems, preventing pipe corrosion.
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Often used with morpholine or diethylaminoethanol (DEAE) for synergistic effects.
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Oxygen Scavenger Booster: Enhances the performance of hydrazine-based oxygen scavengers.
2. Chemical Intermediate
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Rubber Industry:
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Used to produce rubber accelerators (e.g., CBS, cyclohexylbenzothiazole sulfenamide).
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Pharmaceuticals & Agrochemicals:
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Precursor for drugs (e.g., cyclohexyl nitrosourea, an anticancer agent).
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Synthesis of herbicides and pesticides.
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Dyes & Coatings:
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Intermediate for azo dyes and epoxy curing agents.
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3. Food & Agriculture
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Artificial Sweeteners:
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Key raw material for sodium cyclamate (a non-nutritive sweetener, banned in the U.S. but allowed in some countries).
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Animal Feed Additive:
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Used in trace amounts as a preservative or pH adjuster.
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4. Other Applications
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Gas Treatment:
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Removes CO₂ and H₂S from natural gas streams (as a component of amine scrubbing solutions).
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Textile Industry:
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pH regulator in dyeing processes.
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Lubricants:
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Corrosion inhibitor in metalworking fluids.
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Safety & Handling
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Toxicity: Harmful if inhaled or absorbed through skin (causes burns, respiratory irritation).
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Storage: Keep in airtight containers away from acids/oxidizers.
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Regulations:
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FDA: Approved for limited food uses (e.g., cyclamate production).
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EPA: Regulated under hazardous chemical guidelines.
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Alternatives
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For boiler treatment: Morpholine, ammonia, or neutralizing amines.
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For sweeteners: Aspartame, sucralose (where cyclamate is banned).