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Methyl isobutyl ketone

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Methyl isobutyl ketone Specification

Molecular Weight
100.16 g/mol

Storage Instructions
Store in a cool, well-ventilated place away from sources of ignition

Odour
Mild, sweet, acetone-like

Appearance
Clear, colorless liquid

Solubility
Slightly soluble in water, miscible with most organic solvents

Density
0.805 Gram per cubic centimeter(g/cm3)

Ph Level
Neutral

Chemical Name
Methyl isobutyl ketone

Other Names
Hexone, 4-Methyl-2-pentanone, MIBK

Classification
Ketone solvent

CAS No
108-10-1

Type
Industrial Chemical

Application
Used in surface coatings, adhesives, paints, varnishes, and as an extraction solvent

Application Method
Used directly as a solvent or chemical intermediate

Raw Material
Acetone, Isopropanol

Physical State
Liquid

Usage
Industrial applications, solvent extraction, paint and coating formulations

Shelf Life
24 Months

Purity(%)
98% min

Drying Time
Rapid

Best Before
2 Years from packaging

Ecological Information
Toxic to aquatic life with long lasting effects

Transport Information
Proper shipping name: Methyl isobutyl ketone

Boiling Point
116C

HS Code
29141300

Melting Point
-80C

Compatibility
Incompatible with acids, strong oxidizers

Flash Point
14C (closed cup)

Vapor Pressure
16.5 mm Hg at 20C

Stability
Stable under recommended storage conditions

Regulatory Status
REACH registered, OSHA regulated

Hazard Class
Flammable liquid, Class 3

Auto-Ignition Temperature
460C

Packing Group
II

Respiratory Protection
Use with adequate ventilation; use respiratory protection in confined areas

Refractive Index (n20/D)
1.3961.399

Water Content
0.1% max

UN Number
UN1245

Evaporation Rate
1.6 (butyl acetate=1)

About Methyl isobutyl ketone

Methyl isobutyl ketone (MIBK) is the organic compound with the formula (CH3)2CHCH2C(O)CH3. This colourless liquid, a ketone, is used as a solvent for gums, resins, paints, varnishes, lacquers, and nitrocellulose.

MIBK is used as a solvent for nitrocellulose, lacquers, and certain polymers and resins.
Precursor to 6PPD

Another major use is as a precursor to N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylene diamine (6PPD), an antiozonant used in tires. 6PPD is prepared by reductive coupling of MIBK with 4-aminodiphenylamine.
Solvent and niche applications

Unlike the other common ketone solvents, acetone and MEK, MIBK has quite low solubility in water, making it useful for liquid-liquid extraction. It has a similar polarity to ethyl acetate, but greater stability towards aqueous acid and base. It can be used to extract gold, silver and other precious metals from cyanide solutions, such as those found at gold mines, to determine the levels of those dissolved metals. Diisobutyl ketone (DIBK), a related lipophilic ketone, is also used for this purpose. Methyl isobutyl ketone is also used as a denaturing agent for denatured alcohol. When mixed with water or isopropyl alcohol MIBK serves as a developer for PMMA electron beam lithography resist. MIBK is used as a solvent for CS in the preparation of the CS spray used currently by British police forces.

Key Physical and Chemical Characteristics

MIBK is a colorless liquid with a molecular weight of 100.16 g/mol and a density of 0.805 g/cm. It has a boiling point of 116C, a rapid evaporation rate, and a refractive index between 1.3961.399. Its solubility in water is low, but it is miscible with many organic solvents. MIBK demonstrates stability under standard storage conditions and retains effectiveness for up to 24 months.

Safe Storage and Handling Practices

Due to its classification as a flammable liquid (Hazard Class 3), MIBK must be stored in cool, well-ventilated areas away from ignition sources. Always use proper respiratory protection in confined spaces and ensure good ventilation during handling. Packed under UN1245 and regulated by REACH and OSHA, adherence to safety protocols is essential to avoid hazards such as fire or toxic exposure.

Industrial Applications and Benefits

MIBK is extensively used in surface coatings, adhesives, and paint formulations for its excellent solvent power and rapid drying capability. It is also used as an extraction solvent and as an intermediate in chemical processes. Its low water content and reliable purity make it a preferred choice in industries requiring consistent, high-performance solvents.

FAQs of Methyl isobutyl ketone:

Q: How is Methyl isobutyl ketone typically used in industrial settings?

A: Methyl isobutyl ketone (MIBK) is predominantly used as a solvent in surface coatings, paints, varnishes, and adhesives due to its effective solvency and rapid evaporation properties. It is also employed as an extraction solvent and chemical intermediate in various industrial processes.

Q: What safety precautions are necessary when handling MIBK?

A: When handling MIBK, it is crucial to store it in a cool, well-ventilated place away from heat or ignition sources, as it is a flammable liquid. Use respiratory protection in confined spaces and ensure adequate ventilation to minimize inhalation risks. Always follow OSHA and REACH guidelines for safe handling.

Q: Where should MIBK be stored to maintain stability and safety?

A: MIBK should be stored in containers tightly sealed and placed in cool, ventilated areas away from direct sunlight, sources of ignition, acids, and strong oxidizers. Proper storage ensures stability and helps maintain the products effectiveness for up to 24 months.

Q: What are the main benefits of using MIBK as a solvent?

A: MIBK stands out for its high purity, rapid drying time, and ability to dissolve a wide range of organic materials. Its effectiveness in producing smooth, consistent finishes in paints and coatings, along with a low water content, makes it a favored choice in industrial applications.

Q: How should MIBK be transported, and what are the key regulatory details?

A: MIBK is shipped under the proper shipping name "Methyl isobutyl ketone," UN1245, Hazard Class 3, Packing Group II. Distributors and suppliers must comply with local and international transport regulations, and individuals should refer to the HS Code 29141300 when importing or exporting.

Q: When does MIBK reach its best before date, and what is its shelf life?

A: MIBK has a shelf life of 24 months and is best used within two years from the packaging date. Proper storage under recommended conditions ensures the product maintains its quality and performance during its shelf life.

Q: What ecological impact does MIBK have, and what precautions should be considered?

A: MIBK is toxic to aquatic life with long-lasting effects, so care should be taken to avoid spills or disposal into the environment. Compliance with ecological safety standards and prompt spill management are vital to minimize environmental impact.

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