4-Vinylaniline CAS 1520-21-4 is supplied as a reactive aromatic amine monomer and specialty intermediate for controlled industrial use. It is suitable for polymer-related synthesis, resin modification, and selected coating or adhesive systems where a vinyl-functional aromatic amine is required. Supply form, inhibitor status, and documentation may vary according to grade and application.
4-Vinylanilin CAS 1520-21-4
- CAS: 1520-21-4
- Synonyms: 4-Aminostyrene 4-Ethenylaniline p-Aminostyrene Benzenamine, 4-ethenyl-
- Einecs: 216-185-8
- Molecular Formula: C8H9N
- Grade: Chemical intermediate grade
Product Description
Typical Specification
| Item | Typical Specification |
|---|---|
| Product Name | 4-Vinylaniline |
| Synonym | 4-Aminostyrene |
| CAS No. | 1520-21-4 |
| Product Type | Chemical Intermediate |
| Molecular Formula | C8H9N |
| Molecular Weight | 119.16-119.17 |
| Appearance | White to brown powder, lump, or clear liquid depending on handling temperature and condition |
| Assay | Typically 97.0% min to 98.0% min |
| Storage | Low temperature, protected from light, air, and heat |
| Handling | Commonly stored under inert gas |
Public supplier listings show purity as 97% in one commercial listing and >98.0% (titration) with GC min. 95.0% in another major catalog entry. Final release standards should follow the actual batch specification supplied for the order.
Reference Information
| Item | Reference Information |
|---|---|
| Melting Point | About 21-23°C |
| Solubility | Soluble in benzene, methanol, and acetone |
| Physical State at 20°C | Solid |
| Storage Temperature Reference | Frozen below 0°C in one supplier listing |
| Sensitivity | Light sensitive, air sensitive, heat sensitive |
For reference only, not used as batch release specification. These values are drawn from catalog and reference listings and should not replace actual batch COA data.
Key Features
- Defined vinyl-substituted aromatic amine intermediate for synthesis use.
- Commonly recognized under the interchangeable names 4-Vinylaniline and 4-Aminostyrene.
- Commercially listed in high-purity grades, commonly around 97% to >98.0% depending on method.
- Suitable for reactive intermediate positioning in synthesis and materials development. This is a conservative inference from supplier presentation and cited use context.
- Requires controlled storage and handling, including protection from light, air, and heat.
Applications
- Organic synthesis requiring a vinyl-functional aromatic amine intermediate. This is directly supported by its supplier positioning as a specialty synthesis chemical.
- Fine chemical and intermediate development where a reactive aromatic amine scaffold is needed. This is a grounded inference from the structure and supply context.
- Materials and polymer-related development, including use as a reactant in preparation of functional polymer systems. One listing specifically notes use in preparation of fluorescent PMMA-latex colloids, and patent literature references poly(4-vinylaniline)-related material applications.
- Laboratory synthesis and route scouting for downstream transformation or functional monomer evaluation. This is a conservative intermediate-stage use statement based on the cited catalog context.
- Process development for specialty aromatic intermediates where controlled reactivity and defined substitution pattern are important. This is an inference from the compound class and supply profile.
Packaging and Storage
Public catalog listings show this material supplied in small packs, such as 5 g and 25 g, which is consistent with development-scale and specialty intermediate sourcing. Broader project-based packing can be discussed according to order scale and handling requirements, but that should be stated conservatively unless you have fixed in-house standards.
For storage, catalog references indicate frozen storage below 0°C, use of inert gas, and protection from light, air, and heat. Another market source also lists refrigerated storage at 0-6°C. Practical storage language on the page should follow the batch SDS and actual warehouse conditions.
FAQ - Technical & Supply Chain
-
Q:
What is 4-Vinylaniline CAS 1520-21-4?
A: 4-Vinylaniline is an aromatic amine with a vinyl substituent at the para position. It has the molecular formula C8H9N and is also known as 4-Aminostyrene or p-Aminostyrene. -
Q:
What are the main applications of 4-Aminostyrene CAS 1520-21-4?
A: It is mainly used as a reactive intermediate and monomer in organic synthesis and materials development. Typical uses include functional styrenic polymers, polyaniline-related conductive systems, surface modification studies, and specialty aromatic building blocks. -
Q:
Why can 4-Vinylaniline appear as a solid or a liquid?
A: Its melting point is near room temperature, commonly around 21-24 C, so the physical form can change with handling and storage temperature. Commercial material may therefore be described as a powder, lump, or clear liquid depending on conditions. -
Q:
What are typical specifications for 4-Vinylaniline?
A: Catalog grades are commonly listed at about 97% to greater than 98% assay, depending on the analytical method. Reference data include a molecular weight of about 119.16, a boiling point around 213-214 C, and solubility in benzene, methanol, and acetone. -
Q:
How should 4-Vinylaniline CAS 1520-21-4 be stored?
A: Store it tightly closed in a cool, dark, well-ventilated area and protect it from light, air, and heat. Many suppliers recommend frozen storage below 0 C or refrigerated storage at 0-6 C, often under inert gas to reduce degradation and unwanted polymerization.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
Send the CAS number, grade, quantity, packing preference and destination.
Sample & Supply
Support is available for samples, trial orders, bulk and repeat supply.
Storage & Shipping
Product-specific conditions are confirmed before order.
