Alcohols & Glycols
REACH
Isobutanol
CAS Number
78-83-1
EC Number
201-148-0
FEMA Number
FEMA 2179
Abbreviation
IBA
What is Isobutanol?
Isobutanol (CAS 78-83-1), also known as IBA, is a short-chain aliphatic alcohol.
Where is Isobutanol used?
- Coatings and resins: reactive solvent and intermediate for isobutyl acrylate and methacrylate esters
- Adhesives and polymers: feed for adhesive and polymer formulations
- Food and beverage: FEMA 2179 flavoring agent adding fruity top notes to confectionery and baked goods
- Personal care: solvent carrier in fragrance compounds and aerosol formulations
- Plasticizers and resins: building block for isobutyl esters
- It supports cross-linking chemistry in alkyd and amino resin systems.
Good to know: Technical grade is the primary commercial form; food-grade material meets FCC specifications for flavor applications.
Commercial specifications
- Purity typically 99% and above
- Bulk quantities: drums, IBCs, isotanks
Other Names (Synonyms)
Methyl-2 propanol-1|Isopropyl carbitol|Isomerism:it shows meta isomerism with ethers|Isobutyl alcohol|iso-C4H9OH|i-Butyl alcohol|i-Butanol|Alcool isobutylique|IBA
What are the physical properties of Isobutanol?
Melting Point -108 °C
Boiling Point 108 °C
Density 0.8018 g/cm³ @ Temp: 24 °C
Flash Point 82 °F
Appearance colourless oily liquid
Color APHA: ≤10
Odor Slightly suffocating; nonresidual alcoholi
Form Solid
Water Solubility 95 g/L (20 ºC)
Vapor Pressure 8 mm Hg ( 20 °C)
Refractive Index n 20/D 1.396(lit.)
pH 7 (80g/l, H2O, 20℃)
Log P 1 at 25℃
How is Isobutanol classified and handled safely? Learn More
Danger
GHS02· Flammable GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H226 Flammable liquid and vapor
H303 May be harmful if swallowed
H305 May be harmful if swallowed and enters airways
H313 May be harmful in contact with skin
Precautionary Statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.
Which trade and regulatory codes apply to Isobutanol?
HS Code 29051990
UN Number 1212
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 1