Name: China Supplier High Quality Best Price Ethyl 4-dimethylaminobenzoate CAS 10287-53-3
Brand: Wuhan Fortuna Chemical Co., Ltd.

Specifications of Ethyl 4-dimethylaminobenzoate CAS 10287-53-3

Items	Specifications	Results
Appearance	White crystal	Conforms
Assay	≥99.0%	99.82%
Moisture	≤0.1%	0.06%
Residue on ignition	≤0.1%	0.03%

Parameters of Ethyl 4-dimethylaminobenzoate CAS 10287-53-3

Product parameters
Cas number:	10287-53-3
Appearance:	White crystal
Purity:	99%min
Package details:	1kg/foil bag; 25kg/fiber drum
Brand:	Fortunachem

Ethyl 4-dimethylaminobenzoate (often abbreviated as EDMAB or E-DMAB) is an organic ester compound. It is a derivative of benzoic acid, where a dimethylamino group is attached to the benzene ring at the para (4-) position, and an ethyl ester group forms the functional part of the molecule.

It is best known as a synergist and co-initiator in ultraviolet (UV) light-induced polymerization reactions, most notably in UV-curing inks, coatings, and adhesives.

Key Properties and Characteristics

Chemical Formula: C₁₁H₁₅NO₂
CAS Number: 10287-53-3
Appearance: Typically a white to off-white crystalline powder.
Solubility: It is soluble in many organic solvents but has very low solubility in water.
Role: It is not a primary initiator itself but is crucial for amplifying the effect of the initiating species in a photochemical reaction.

How Does It Work? (Mechanism of Action)

EDMAB's primary function is in photochemistry. It is a key component in photoinitiator systems for UV curing. Here’s a simplified breakdown of its role:

The Pair: It is almost always used in combination with a Type II photoinitiator, most commonly Camphorquinone (CQ) in dental resins or other diketones in industrial applications.

Absorption: CQ absorbs light at a specific UV/blue light wavelength (around 468 nm) and enters an excited state.

Electron/Proton Transfer: The excited CQ molecule interacts with EDMAB. EDMAB acts as an electron and hydrogen donor.

Creating Radicals: This interaction generates highly reactive free radical species much more efficiently than CQ could on its own.

Initiation: These free radicals then initiate the polymerization process, causing the liquid resin to harden (cure) into a solid plastic network almost instantly.

In essence, EDMAB synergistically boosts the performance of the photoinitiator, allowing for faster curing speeds, deeper cure-through opaque materials, and lower required energy.

Primary Uses and Applications

1. Dental Composites and Adhesives (Most Prominent Use):
This is one of its most critical applications. It is a standard co-initiator in the vast majority of dental resin-based materials, including:

Tooth-colored fillings (composites)
Dental adhesives
Dental cements
Sealants
The combination of Camphorquinone and EDMAB is the industry benchmark for curing these materials using blue light curing lamps.

2. Industrial UV Curing:

Printing Inks: Used in UV-curable inks for packaging, labels, and commercial printing.
Coatings: Used to cure protective and decorative coatings on wood, paper, plastic, and metal.
Adhesives: Used in instant-cure UV adhesives for electronics, optics, and medical devices.

3. Other Uses:

Organic Synthesis: It serves as a building block (synthon) or catalyst in the synthesis of more complex organic molecules.
Sunscreen Agent: In a very different application, some related derivatives are used in sunscreens due to their ability to absorb UV light, though EDMAB itself is not typically used for this purpose.

Safety and Handling

Handling: As with many fine chemicals, it should be handled with care. Standard practice includes using personal protective equipment (PPE) like gloves and safety glasses to avoid skin and eye contact or inhalation of dust.
Regulation: In dental applications, it is used in very small quantities (typically less than 1% by weight) and is encapsulated within the hardened polymer network, making the final material biocompatible and safe for oral use.

Summary

Aspect	Description
What it is	An organic ester compound, derivative of benzoic acid.
Primary Function	Co-initiator or synergist in UV photopolymerization reactions.
Key Mechanism	Acts as an electron/hydrogen donor to amplify free radical generation when paired with a photoinitiator like Camphorquinone (CQ).
Most Important Use	Dental materials (fillings, adhesives) and industrial UV-curable inks/coatings.
Physical Form	White to off-white crystalline powder.

In short, Ethyl 4-dimethylaminobenzoate (EDMAB) is a critical behind-the-scenes component that enables the fast, efficient, and reliable hardening of plastics, composites, and inks using UV light, with a particularly vital role in modern dentistry.