1,4-Butanediol dimethacrylate Property

Melting point:

−117 °C(lit.)

Boiling point:

132-134 °C/4 mmHg (lit.)

Density 

1.023 g/mL at 25 °C (lit.)

vapor density 

2.09 (vs air)

vapor pressure 

430 mm Hg ( 25 °C)

refractive index 

n20/D 1.456(lit.)

Flash point:

38 °F

storage temp. 

2-8°C

solubility 

Chloroform (Sparingly), Methanol (Slightly)

pka

9.8(at 25℃)

form 

Liquid

color 

Clear colorless to slightly yellow

Water Solubility 

243mg/L at 20℃

Merck 

14,9710

BRN 

956566

LogP

3.1 at 20℃

CAS DataBase Reference

2082-81-7(CAS DataBase Reference)

NIST Chemistry Reference

1,4-Butylene glycol dimethacrylate(2082-81-7)

EPA Substance Registry System

1,4-Butanediol dimethacrylate (2082-81-7)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38-43

Safety Statements 

3-16-26-29-39-36/37/39

RIDADR 

UN 2924 3/PG 2

WGK Germany 

2

RTECS 

PA0350000

F 

9-34

TSCA 

TSCA listed

HazardClass 

3

PackingGroup 

I

HS Code 

29161400

Hazardous Substances Data

2082-81-7(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

1,4-Butanediol dimethacrylate Chemical Properties,Usage,Production

Description

Sensitization to 1,4-butanediol dimethacrylate (BUDMA) was reported in dental technieians, with cross reactivity to methylmethacrylate.

Chemical Properties

1,4-Butanediol dimethacrylate has a clear liquid appearance and is used as a cross-linking methacrylic monomer of polymers. They are present in dental composite materials, sealants, and inks. 1,4-Butanediol dimethacrylate is a non flammable liquid, with a low volatility and a moderatesolubility in water.

Uses

cross-linking methacrylic monomer for use in dental-composite materials, sealants, prostheses, etc.

Application

1,4-Butanediol dimethacrylate is an important crosslinking agent, which can be used as a crosslinking agent for rubber and plastics, a modifier for rubber and synthetic resins, an adhesive for acrylic sheets, and a plasticizer for glass fibers. It is widely used in injection moldings, rubber, optical plastics, adhesives, dental materials, wire and cable coatings, etc. At present, the preparation of 1,4-butanediol dimethacrylate is usually carried out by a reactive distillation ester exchange process in the presence of a catalyst and an inhibitor. The purpose of adding a catalyst and an inhibitor is to accelerate the reaction process and prevent polymerization during the reaction and distillation under the action of light and heat.

Synthesis

Methyl methacrylate and 1,4-butanediol are taken as raw materials. The following steps conclude: reacting the methyl methacrylate with the 1,4-butanediol to prepare the product of 1,4-butanediol dimethacrylate with the purity of over 99.0 percent by adopting a reaction distillation ester exchange process in the presence of a catalyst and a polymerization inhibitor, wherein the catalyst is an organic tin catalyst. The polymerization inhibitor is a composite polymerization inhibitor.