Vinyl sulfone

Description

1. Product Overview
Vinyl sulfone (Divinyl sulfone) is a high-purity, bifunctional organic intermediate characterized by its exceptional reactivity toward nucleophiles, particularly thiol and amine groups. Its primary industrial use lies in advanced polymer synthesis, bioconjugation, and as a critical crosslinking agent for specialty chemicals. The key value proposition is enabling stable, selective, and rapid chemical bonding under mild conditions—reducing process steps and energy input. With growing demand for precision materials in life sciences and high-performance coatings, vinyl sulfone is strategically positioned as an enabling molecule for next-generation functional materials.

2. Key Specifications & Technical Characteristics

• Chemical composition: Divinyl sulfone (C₄H₆O₂S), CAS 1115-15-7

• Purity grade: ≥99.0% (GC, anhydrous grade available for sensitive applications)

• Physical form: Clear to pale yellow liquid

• Physical characteristics: Low viscosity (approx. 2–4 cP at 25°C), density ~1.18 g/cm³, boiling point 92–94°C at 10 mmHg

• Reactivity profile: Stable when dry; reacts exothermically with water, bases, and nucleophiles

• Packaging options: 1 L, 25 L (HDPE jerricans), 200 L (epoxy-lined steel drums), and 1000 L IBCs

• Shelf life: 12 months when stored under inert gas (N₂) at 2–8°C, away from moisture and light

3. Core Industrial Applications

• Life sciences & bioconjugation: Covalent immobilization of antibodies, peptides, or enzymes onto hydrogels or sensor surfaces—outperforms NHS-ester chemistry due to higher stability of vinyl sulfone–thiol bonds in physiological conditions.

• Specialty polymers & coatings: Crosslinking agent for waterborne polyurethanes and epoxy-acrylate hybrids; delivers superior hydrolytic stability compared to isocyanate-based systems, reducing VOC emissions.

• Water treatment membranes: Functionalization of polyethersulfone (PES) and polysulfone membranes to enhance antifouling properties—enables 40% longer service intervals versus unmodified membranes.

• Adhesives & sealants: Fast-cure additive for two-part structural adhesives; lowers curing temperature by 15–20°C compared to amine-based alternatives.

4. Competitive Advantages

• Quality consistency: Batch-to-batch purity variation <0.2% via validated GC-MS and Karl Fischer moisture testing; each shipment includes CoA.

• Supply reliability: Dual-sourced manufacturing (Asia and Europe) with 50 MT buffer stock held in regional hubs (Rotterdam, Houston, Shanghai).

• Logistics capability: UN 2810 (toxic liquid) compliant packaging; temperature-controlled shipping options available for sensitive grades.

• Price competitiveness: Contract pricing from 5 MT/year locks in <2% annual escalation for multi-year agreements.

• Sustainability & safety: Non-bioaccumulative; alternative to genotoxic crosslinkers (e.g., divinylbenzene) in specific applications; REACH and TSCA registered.

• Technical support: Dedicated application scientists for scale-up troubleshooting and stability study documentation.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 5 kg (sample qualification), 200 kg (standard lot)

• BULK 20MT loading capacity: 20 MT per 20-ft ISO tank container (liquid) or 16 MT per 20-ft general-purpose container (in 200 kg drums, 80 drums per container)