Isobutylamine
Description
Isobutylamine (CAS 78-81-9), also known by its FEMA 4239 designation, is a primary aliphatic amine used as a reactive building block and process chemical across pharmaceutical synthesis and agrochemical manufacturing.
It functions as an intermediate, pH regulator, and corrosion inhibitor depending on the process context. In agrochemical production, it serves as a key intermediate in synthesizing herbicides and pesticides.
Its reactivity with acid chlorides and isocyanates enables the formation of active ingredient structures. Pharmaceutical manufacturers use it as a synthetic intermediate for drug compounds requiring a branched-chain amine moiety.
In rubber and tire processing, it supports polymerization initiation and acts as an accelerator component in vulcanization systems. Water treatment formulators incorporate it for pH buffering and corrosion inhibition.
These applications are critical in industrial cooling and boiler systems. The product is supplied as a clear, low-viscosity liquid in drum and IBC quantities, with bulk tanker options available for high-volume procurement.
Technical grade is the standard commercial offering, with purity levels typically at 99% or higher. Pharmaceutical-grade material meeting relevant compendial specifications is available from select manufacturers.
This material is suitable for regulated synthesis applications and meets high quality standards. Our logistics network ensures reliable delivery of this essential chemical intermediate to global manufacturing facilities.
Physical Properties
| Melting Point | -85 °C |
| Boiling Point | 68-69 °C |
| Density | 0.724 g/cm³ @ Temp: 25 °C |
| Flash Point | 15 °F |
| Appearance | Butyl amines are highly flammable, colorless liquids (n-turns yellow on standing) with ammoniacal or fishlike odors. n-isomer: |
| Color | Clear colorless to slightly yellow |
| Odor | Strong ammoniacal. |
| Form | Liquid |
| Water Solubility | soluble |
| Vapor Pressure | 15.9kPa at 20℃ |
| Refractive Index | n 20/D 1.397(lit.) |
| pH | 12.2 (100g/l, H2O, 20℃) |
| Log P | -0.3 at 25℃ |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29211990 |
| UN Number | 1214 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 1 |
Documentation
Other Names
Valamine|iso-C4H9NH2|I-Butylamine|3-Methyl-2-propylamine|2-Methylpropylamine|2-Methyl-1-Aminopropane|1-Amino-2-methylpropane|IBA
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