n-Butanol is an eminently suitable solvent for acid-curable lacquers and baking finishes derived from urea, melamine, or phenolic resins. In these applications, it is mostly used together with glycol ethers or ethanol. When added even in small proportions to alkyd resin paints, n-Butanol reduces their viscosity and thus improves their brushability and flow. Low concentrations of n-Butanol prevent cobwebbing in laquers formulated from sprit-soluble resins.
n-Butanol occurs naturally as a minor product of the fermentation of sugars and other carbohydrates, and is present in many foods and beverages.It is also a permitted artificial flavorant in the United States, used in butter, cream, fruit, rum, whiskey, ice cream and ices, candy, baked goods and cordials.It is also used in a wide range of consumer products.
n-Butanol is used:
as a solvent for a wide variety of chemical and textile processes;
as a paint thinner;
as a component of hydraulic and brake fluids;
as a direct fuel in any standard internal combustion engine engineered for gasoline usage;
as urea- and melamino-formaldehyde resins modifier;
n-butanol is an intermediate product in plasticizers manufacture;
in butyl acetate, butyl acrylate and glycol ethers production.
n-butanol is a transparent liquid with distinctive vinous odor. It is miscible with a number of organic solvents. n-Butanol dissolves in water and forms azeotropic solution with it (42% H2O by mass, bp 92.7°C). n-Butyl alcohol is a typical aliphatic alcohol.
PRODUCT NAME n-butanol (n-butyl alcohol, NBA, butan-1-ol)
HS code 2905 13 00
PRODUCT CLASSIFICATION ADR class 3, packaging group III
Appearance (visual color)
Transparent liquid without mechanical impurities
Colority, Hazen units, max
Density at 20°C, g/cm³
Mass fraction of butyl alcohol, %, min
Mass fraction of acids in acetic acid recalculation, %, max
Mass fraction of carbonyl compounds in butyric aldehyde recalculation, % max
Mass fraction of non-volatile residue, %, max
Mass fraction of water, %, max
Bromine number, g of brome/100 g of alcohol, max
Shelf life: If stored in its original packaging and kept under proper conditions, the storage stability of the products is 36 months.
Liquid n-butanol, being common with most of organic solvents, extremely exasperates eyes; frequent contact with skin can also cause an irritation. This is believed to be a generic effect of "defatting". No skin sensitization has been observed. Irritation of the respiratory pathways occurs only at very high concentrations (>2400 ppm).
With a flash point of 35 °C, n-butanol presents a moderate fire hazard: it is slightly more flammable than kerosene or diesel fuel but less flammable than many other common organic solvents. The depressant effect on the central nervous system (similar to ethanol intoxication) is a potential hazard when working with n-butanol in enclosed spaces, although the odour threshold (0.2–30 ppm) is far below the concentration which would have any neurological effect.
n-Butanol is of low toxicity to aquatic vertebrates and invertebrates. It is rapidly biodegraded in water, although an estimated 83% partitions to air where it is degraded by hydroxyl radicals with a half-life of 1.2–2.3 days. It has low potential to bioaccumulate. A potential hazard of significant discharges to watercourses is the rise in chemical oxygen demand (C.O.D.) associated with its biodegradation.
The certificate of analysis (COA) per shipped lot number must be issued in compliance with Russian standard GOST 5208-81