Solvents - Oxygenated Available — Bulk Only

Methyl Isobutyl Carbinol (MIBC, 4-Methyl-2-Pentanol)

CAS 108-11-2 · Formula C6H14O · MW 102.17 g/mol

The workhorse frother of sulfide and coal flotation circuits. It is used as a frother in the froth flotation of copper ores, coal, and tar sands, and as a solvent for dyes, oils, gums, resins, waxes, and cellulose esters.

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UN Number
UN 2053
Hazard Class
Class 3
HS Code
2905.19
At a Glance
Material Family
Solvents - Oxygenated
Record Type
Pure compound
Primary Role
Solvency
Functional Roles
4-METHYLPENTAN-2-OL
PERFUMING
Applications & Use Cases
  • Flotation frother: Generates stable froth in flotation of copper sulfide ores, coal, and tar sands.
  • Solvent: Dissolves dyes, oils, gums, resins, waxes, and cellulose esters.
  • Lubricant-additive feedstock: Used in producing anti-wear and corrosion-inhibitor additives.
  • Intermediate: Feedstock for plasticizers, lacquers, and brake fluids.
Physical Properties
Melting Point
< -90 °C
Boiling Point
132 °C at 760 mmHg
Density
0.807 at 20 °C
Solubility
2 %
Vapor Pressure
3 mmHg
Flash Point
41 °C
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 3 placard
UN / DOT NumberUN 2053
Hazard Class / DivisionClass 3
Packing GroupIII
Proper Shipping NameMethyl isobutyl carbinol

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2905 . 19
Chapter 29
Organic chemicals
Heading 29.05
Internationally harmonized (WCO HS)
Subheading 2905.19
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
108-11-2
Molecular Formula
C6H14O
Molecular Weight
102.17 g/mol
IUPAC Name
4-methylpentan-2-ol
INCI Name
4-METHYLPENTAN-2-OL
PubChem CID
InChI Key
WVYWICLMDOOCFB-UHFFFAOYSA-N
Synonyms & Trade Names
4-METHYL-2-PENTANOL 4-Methylpentan-2-ol Isobutylmethylcarbinol 2-Pentanol, 4-methyl- Methyl isobutyl carbinol 2-Methyl-4-pentanol Methylisobutylcarbinol MIBC Isobutylmethylmethanol 1,3-Dimethylbutanol 3-MIC 4-Methylpentanol-2 MAOH Metilamil alcohol Methylisobutyl carbinol dl-Methylisobutylcarbinol 4-Methyl-2-amyl alcohol Alcool methyl amylique 4-Methyl-2-pentyl alcohol
Full Description

Methyl isobutyl carbinol (MIBC, 4-methyl-2-pentanol; CAS 108-11-2) is a branched C6 secondary alcohol. It is used as a frother in the froth flotation of copper ores, coal, and tar sands, and as a solvent for dyes, oils, gums, resins, waxes, and cellulose esters. It also serves as an intermediate in the manufacture of lubricant additives, plasticizers, and lacquers.

Frequently Asked Questions

What is MIBC (methyl isobutyl carbinol)?

MIBC, or methyl isobutyl carbinol (4-methyl-2-pentanol, CAS 108-11-2, C6H14O), is a branched C6 secondary alcohol in the oxygenated-solvents family. It is used primarily as a flotation frother and as a solvent for oils, resins, and cellulose esters.

What is MIBC used for in mining?

MIBC is a widely used frother in froth flotation, generating a stable, well-controlled froth in the flotation of copper sulfide ores, coal, and tar sands. The branched secondary-alcohol structure gives it the bubble-stabilizing behavior valued in mineral processing.

What else is MIBC used for besides flotation?

Beyond mining, MIBC is a solvent for dyes, oils, gums, resins, waxes, and cellulose esters, and an intermediate in the manufacture of lubricant additives, plasticizers, lacquers, and brake fluids. It is supplied to both mineral-processing and chemical-manufacturing customers.

Is MIBC an alcohol?

Yes. MIBC is 4-methyl-2-pentanol, a branched secondary aliphatic alcohol (the term carbinol is an older name for an alcohol). Its single hydroxyl group on a six-carbon branched chain underlies both its frothing and solvent properties.

What is the UN number for shipping bulk MIBC?

MIBC ships under UN 2053 (Methyl isobutyl carbinol) as a flammable liquid; consult the SDS for the proper shipping name, packing group, and DOT/IMDG details. RawSource supplies it in bulk drums and totes/IBCs, with a CoA and SDS per shipment; submit a bulk quote for pricing and MOQ.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.