Description

Crotyl Mercaptan is a versatile organosulfur compound characterized by its reactive mercaptan group and unsaturated butenyl chain. This unique structure makes it a valuable intermediate and chain transfer agent in the synthesis of specialty polymers and fine chemicals. It is primarily utilized by manufacturers in the polymer, agrochemical, and pharmaceutical industries seeking to modify molecular weight or introduce sulfur functionality.

Application

• Polymer Industry: Acts as a highly effective chain transfer agent (CTA) or modifier in free-radical polymerization processes to control polymer molecular weight and architecture.
• Fine Chemical Synthesis: Serves as a key building block for introducing the thiol functional group into more complex molecules for pharmaceuticals and agrochemicals.
• Lubricant & Fuel Additives: Used in the formulation of extreme pressure (EP) additives and antioxidants due to its sulfur content.
• Rubber Vulcanization: Functions as a vulcanizing agent or accelerator precursor in the production of synthetic rubbers.
• Flavor & Fragrance Intermediates: Employed in the synthesis of certain sulfur-containing aroma compounds.
• Research & Development: Utilized in academic and industrial R&D for studying thiol-ene click chemistry and other organic transformations.

Basic Information

Product Name	Crotyl Mercaptan
CAS No.	5954-72-3
Molecular Formula	C4H8S
Molecular Weight	88.17 g/mol
Synonyms	2-Butene-1-thiol; (E)-2-Buten-1-thiol; trans-2-Buten-1-thiol; Crotylthiol; 1-Mercapto-2-butene; 2-Butenyl mercaptan; Crotyl alcohol, thio-
EINECS	227-729-9

Quality Control

Our Crotyl Mercaptan is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets exacting standards for industrial and research applications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Due to its mercaptan nature and potential volatility, it should be kept separate from strong oxidizing agents and bases. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Isomer Ratio (trans/cis)	Reported on COA
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.90 - 0.95
Refractive Index (20°C)	1.480 - 1.490

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.