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Specifications
|
Appearance |
Colorless/ slightly Yellow Liquid |
|
Content |
97.0% min |
|
Specific Gravity (D20/20) |
0.830-0.842 |
|
Refractive Index (ND20) |
1.435-1.445 |
Transport Information
|
Parameter |
Specification |
|
UN Number |
2347 |
|
Class |
3 |
|
Packing Group |
II |
|
H.S. Code |
3824999999316 |
|
Stability & Reactivity |
The product is chemically stable under standard ambient conditions. |
|
Storage |
Keep container tightly closed in a dry and well-ventilated place. Keep away from heat and sources of ignition. Handle and store under inert gas. Air and moisture sensitive. |
|
Condition to Avoid |
Warming |
|
Package |
Overview
Isobutylmercaptan丨CAS 513-44-0, also known as isobutyl thiol, is a colorless to pale yellow liquid with a strong, unpleasant odor typical of thiols. It belongs to the class of organosulfur compounds characterized by the presence of a thiol (-SH) group attached to an isobutyl group (a branched four-carbon alkyl chain). It is highly volatile and flammable.
Applications
Chemical Intermediate
Used as a building block in the synthesis of agrochemicals, pharmaceuticals, and specialty chemicals. Its reactive thiol group allows it to form disulfides, thioethers, and other sulfur-containing derivatives.
Odorant and Tracer
Due to its strong odor, it can be used as an odorant additive for natural gas leak detection or other industrial gases where trace sulfur compounds are required for safety monitoring.
Rubber and Polymer Industry
Serves as a chain transfer agent or modifier in polymerization reactions, particularly in the production of synthetic rubber, to control molecular weight and branching.
Corrosion Inhibitors and Additives
Incorporated in lubricant and fuel additives to improve anti-wear and corrosion resistance properties by interacting with metal surfaces.
Flavor and Fragrance Industry (Limited)
Though generally considered unpleasant-smelling, in extremely low concentrations, certain thiols can contribute to flavor profiles; however, isobutylmercaptan is more commonly associated with off-flavors or undesirable odors.
Benefits
High Reactivity
The thiol group is nucleophilic and reactive, allowing for versatile chemical transformations.
Effective Odorant
Its strong scent makes it ideal for safety applications like leak detection.
Polymer Modification
Can finely tune polymer characteristics when used as a chain transfer agent.
Versatile Intermediate
Enables synthesis of diverse sulfur-containing compounds with applications in multiple industries.
