Overview
3-Methyl-1-hexanol is a seven-carbon branched-chain alcohol classified as a fatty alcohol derivative. It occurs naturally in some fruits and plants, contributing to their aromatic profiles. Industrially, it is synthesized through hydroformylation or Grignard reactions of precursor aldehydes. The compound is valued for its versatile solvent properties and pleasant fruity odor, making it a common choice for fragrance formulations and specialty chemical applications. Its moderate molecular weight balances volatility and solvency in formulated products.
Physical and Chemical Properties
As a liquid at room temperature, 3-methyl-1-hexanol exhibits typical alcohol characteristics including hydrogen bonding capacity and polarity. Its branched structure lowers its freezing point compared to linear isomers, enhancing low-temperature stability. Key reactivity includes esterification with acids and oxidation to aldehydes. The hydroxyl group enables use as a synthetic intermediate. Its solubility profile favors non-polar systems, though it can act as a co-solvent in water-alcohol mixtures at low concentrations.
Main Applications
In perfumery, 3-methyl-1-hexanol serves as a middle note with green, earthy undertones, often blended with citrus or woody scents. Flavorists utilize it in trace amounts for tropical fruit accords. Industrial applications include solvent formulations for printing inks where it modifies drying rates, and as a coalescing agent in paint systems. Recent research explores its potential as a bio-based precursor for plasticizers due to its branching and esterification capability.
Safety and Storage
Classified as flammable (Flash point ~60°C), storage requires fireproof cabinets and grounding of containers to prevent static discharge. Secondary containment is recommended due to potential groundwater contamination risk. Exposure controls include local exhaust ventilation and chemical-resistant gloves (nitrile recommended). Spills should be absorbed with inert material and disposed as hazardous waste. Shelf life typically exceeds two years when stored in sealed stainless steel or amber glass containers under nitrogen blanket.
B2B Procurement Guide
Technical-grade material (95-98% purity) suits most industrial applications, while fragrance-grade requires ≥99% purity with stringent impurity limits on carbonyl compounds. Bulk shipments typically use 200kg steel drums or isotanks. Key supplier qualifications include ISO 9001 certification, REACH compliance documentation, and batch-specific GC analysis reports. Sample evaluation should assess odor profile consistency and color stability over time. Contract manufacturing options exist for custom derivatization.
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