IPA (ISOPROPYL ALCOHOL)

Isopropyl alcohol (IUPAC name propan-2-ol) is a colorless, flammable chemical compound with a strong odor which has the chemical formulas C3H8O, C3H7OH or CH3CHOHCH3. As an isopropyl group linked to a hydroxyl group, it is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms (sometimes shown as (CH3)2CHOH). It is a structural isomer of 1-propanol and ethyl methyl ether. It is used in the manufacture of a wide variety of industrial and household chemicals and is a common ingredient in chemicals such as antiseptics, disinfectants, and detergents. It causes intoxication. It is not as toxic as methanol and ethylene glycol. As an isopropyl group linked to a hydroxyl group, it is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms.

It is a structural isomer of 1-propanol and ethyl methyl ether.

It is used in the manufacture of a wide variety of industrial and household chemicals and is a common ingredient in chemicals such as antiseptics, disinfectants, and detergents.

In 1990, 45,000 metric tonnes of isopropyl alcohol were used in the United States, mostly as a solvent for coatings or for industrial processes. In that year, 5400 metric tonnes were used for household purposes and in personal care products.

Isopropyl alcohol is popular in particular for pharmaceutical applications, due to its low toxicity. Some isopropyl alcohol is used as a chemical intermediate. Isopropyl alcohol may be converted to acetone, but the cumene process is more significant. It is also used in fuel as an additive.

Isopropyl alcohol is a major ingredient in "gas dryer" fuel additives.

In significant quantities, water is a problem in fuel tanks, as it separates from gasoline and can freeze in the supply lines at low temperatures. Alcohol does not remove water from gasoline, but the alcohol solubilizes water in gasoline. Once soluble, water does not pose the same risk as insoluble water, as it no longer accumulates in the supply lines and freezes but is consumed with the fuel itself.

Isopropyl alcohol is often sold in aerosol cans as a windshield or door lock deicer. Isopropyl alcohol is also used to remove brake fluid traces from hydraulic braking systems, so that the brake fluid does not contaminate the brake pads and cause poor braking. Mixtures of isopropyl alcohol and water are also commonly used in homemade windshield washer fluid.

 

CAS number67-63-0
EINECS number200-661-7
Molecular formulaC3H8O
Molecular weight60.1 g/mol
Flash point12 0C
Melting point-89.5 0C
Boiling point82.4 0C
Density0.786 g/cm3
SolubilityWater-Ether
OdorAlcohol-like
Acidity value% 0.0009

 

Standard Product Specifications

Purity% 99.80 min.
Water% 0.05 max.
Sp-Gr ( 20 0C - 20 0C )0.785 – 0.787 g/ml
Acidity10 ppm max.
KMnO430 min.
Color5 APHA max.

Its highly potential solvent power for cellulose nitrate, cellulose acetate, butyrate and cellulose acetate propionate makes it useful in varnishes, inks and thinners. Isopropyl alcohol is the best thinner in water-based acrylic paints. It is used in the cleaning products and pharmaceutical industry (cleaning sprays etc ...). It is used for the production of monoisopropylamine for herbicides. It is used in the production of acetone (isopropanoloxidation) and its derivatives, and other chemicals (such as isopropyl acetate, isopropylamine, diisopropyl ether, isopropylxanthate, fatty acid esters, herbicidal esters and aluminum isopropoxide). Other uses are: coolant, coupling agent, dehydration agent, preservative, heat-exchanging medium and windscreen concentrates. It is also used in household and personal care products and medicines.

 

    • Process solvent:
    • Extraction and purification of natural products (plant and animal oils and fats, gum, resin, waxes, dyes, flavorings, alkaloids, vitamins, seaweed and algae)
    • Carrier in the production of food products
    • Purification, crystallization, precipitation of organic chemicals
    • Synthetic polymers (such as phenolic varnishes and nitrocellulose varnishes)
    • Coating and paint solvent (cement, primers, paints and inks)
    • Cleaning and drying agent
    • Production of electronic parts, metals and photographic films and  paper, used in glass cleaners, liquid soaps, detergents and aerosols
    • Medical products, embrocation creams and massage solutions
    • As a solvent in preparates applied daily
    • Cosmetics: hair tonics, perfumes, skin lotions, hair dye rinsers and permanent curl lotions, skin cleansers, deodorants, nail polishers, shampoo.
    • Cleaners: waxes, varnishes, paints, ant-freeze, shoe and sock sprays, bug repellents, hair sprays, deodorants, air-freshener
    • As aerosolsolvent
    • Medical and veterinary products: antiseptics, food fungicides, first aid and medical vapor sprays, skin soothing (pain relievers), veterinary wound sprays, home and garden insecticides.

     

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