Isobutanol

Isobutanol, also known as isopropyl alcohol, 2-methyl propanol is a colorless alcohol flammable liquid. Isobutanol is one of the main ingredients of fresh tea leaves, black tea and green tea to produce the wonderful aroma with the molecular weight of 74.12, boiling point of 107.66 ºC, relative density of 0.8016 (20/4 ºC), refractive index of 1.3959 and a flash point of 37 ºC. Isobutanol is fully dissolved in alcohol and ether, slightly soluble in water. Its vapor can form an explosive mixture with air; the explosion limit is 2.4% (volume). It can form addition compounds (CaCl2 • 3C4H10O) with calcium chloride. Isobutanol can be obtained by the distillation of the by-product of methanol and can also be derived from distillation of crude fusel oil. Using Industrial carbonyl cobalt as a catalyst, making propylene and carbon monoxide and hydrogen mixture react at 110~140 ° C, 2.0265 × 107~3.0397 × 107Pa to generate butyraldehyde and isobutyraldehyde, and then via catalytic hydrogenation, separation can obtain isobutanol. Isobutanol is used in the manufacture of petroleum additives, antioxidants, plasticizers, synthetic rubber, artificial musk, fruit oil and synthetic drugs and also used as solvents and chemical reagents.

Isobutanol is an alkyl alcohol that is  propan-1-ol  substituted by a  methyl  group at position 2. It has a role as a Saccharomyces cerevisiae metabolite. It is a primary alcohol and an alkyl alcohol. It derives from a  hydride  of an  isobutane .

Chemical properties

It is a kind of colorless transparent liquid with a special smell, soluble in water, and fully dissolved in ethanol and ether.

 

Uses

(1)  For analysis reagents, chromatography reagents, solvents and extraction agent.
(2)  As raw materials for the organic synthesis, and also act as a superior solvent.
(3)  Isobutanol is raw materials for organic synthesis. It mainly used in the synthesis of isobutyronitrile, an intermediate for diazinon.
(4)  As raw materials of organic synthesis, isobutanol is used in the manufacture of petroleum additives, antioxidants, 2, 6-butylated hydroxytoluene, isobutyl acetate (paint solvents), plasticizers, synthetic rubber, artificial musk, fruit oil and synthetic drugs. It can also be used to purify strontium, barium and lithium salts and other chemical reagents and used as a superior solvent.
(5)  Extraction solvent. Food flavors listed in GB 2760-96.

 

Hazards & Safety Information

Category:  Flammable liquids
Toxic classification:  Moderately hazardous
Acute toxicity:  Oral-Rat LD50: 2460 mg/kg; Abdominal-Mouse LD50: 1801 mg/kg
Stimulation data: Eye-Rabbit 2 mg Severity
Explosives hazardous characteristics:  To be explosive when mix with air.
Flammability hazard characteristics: Flammable in case of fire, high temperature, oxidant; stimulating the smoke when combustion.
Storage and transportation characteristics: Ventilation and low-temperature drying in treasury; oxidants and acids stored separately.
Extinguishing agent:  Dry powder, dry sand, carbon dioxide, foam.
Occupational Standard:  TWA 50 PPM.

Description

Isobutyl alcohol has a disagreeable odor. May be prepared from isobutylene; by reduction of isobutyraldehyde with sodium amalgam or in the presence of a catalyst; by fermentation of isobutyraldehyde; isolated during fermentation of carbohydrates.

Chemical Properties

Isobutyl alcohol has a penetrating, wine-like, disagreeable odor

Physical properties

Clear, colorless, oily liquid with a sweet, musty odor. Burning taste. The average least detectable odor threshold concentration in water at 60 °C was 0.36 mg/L (Alexander et al., 1982). Experimentally determined detection and recognition odor threshold concentrations were 2.0 mg/m ³  (660 ppb _v ) and 5.4 mg/m ³  (1.8 ppm _v ), respectively (Hellman and Small, 1974). An odor threshold concentration of 11 ppb _v  was reported by Nagata and Takeuchi (1990).

Occurrence

Reported found in the essential oils of Java citronella, tea, Eucalyptus amygdalina. Also reported in apple and currant aromas; in apricots, banana, sweet cherry, orange, grapefruit and tangerine juice, berries, guava, grapes, melon, papaya, pear, pineapple, leek, peas, rutabaga, tomato, ginger, spearmint oil, vinegar, breads, cheeses, milk, fish oil, meats, hop oil, beer, cognac, rum, whiskies, sherry, cider, grape wines, cocoa, tea, coffee, nuts, oats, soybean, avocado, olive, passion fruit, plum, beans, mango, starfruit, bantu beer, plum brandy, tamarind, fig, cardamom, gin, quince, radish, prickly pear, litchi, sukiyaki, lovage leaf, buckwheat, sweet corn, laurel, malt, wort, elderberry juice, dried bonito, krill, kiwifruit, loquat, fruit brandies and wines, endive, shrimp, truffle, red currants, Roman chamomile oil and other sources.

Applications

Packing & Delivery

Shandong AIVK Chemical Co., Ltd. is founded in 2008,is located in Guangrao County, Dongying City, Shandong Province, the central city of the Yellow River Delta high efficiency ecological economic zone on the coast of the Bohai Sea.

Our factory is a professional chemicals manufacturer. The company mainly includes propylene, benzene, acetone, dimethylformamide, dimethyl carbonate, methyl acetate, trichloroethylene, n-butyl acetate, cyclohexylamine, tetrachloroethylene, aniline, phenol, ethyl acetate, methyl acetate, SEC butyl acetate, 2-propanol, cyclohexane, 1,2-propylene oxide, 2-methyl-1-propanol and ethanol [anhydrous], 1-chloro-2,3-propylene oxide, dichloromethane, 1,1-dichloroethane, 1,2-dichloroethane, styrene [stable], tetrahydrofuran, propane and other chemical raw materials, involving pesticide, medicine, chemical industry, petrochemical industry and other fields!

Since its establishment, the company has always adhered to the business philosophy of integrity-based and win-win cooperation, with forge ahead and quality first as the business purpose, adhere to customer-centered, market-oriented, and wholeheartedly provide the most high-quality products and services for users at home and abroad with professional technology and sincere attitude.