Dibutyl maleate

CAS: 105-76-0

Overview

Dibutyl maleate (CAS 105-76-0 ), commonly abbreviated as DBM, is a reactive diester monomer used across polymer chemistry and surface coating formulations. Known commercially as Staflex DBM and RC Comonomer DBM, it functions primarily as a reactive plasticizer.

It serves as a copolymerizable building block in resin systems. In acrylic and vinyl polymer production, DBM is incorporated as a comonomer to modify flexibility, adhesion, and film-forming properties in emulsion polymerization systems.

Printing inks and packaging coatings use it to improve substrate adhesion and control the mechanical properties of the cured film. In PVC and synthetic rubber compounding, it acts as a reactive plasticizer that bonds into the polymer matrix.

This bonding prevents the substance from migrating out over time, which is a critical advantage for long-life flexible articles. Personal care formulators have also evaluated DBM as an emollient ester component in skin-conditioning systems.

Dibutyl maleate is supplied as a clear liquid in standard industrial packaging including drums and IBCs. Technical grade is the primary commercial specification, with purity levels typically at 99% or above.

Bulk quantities are available for industrial polymer and coatings manufacturers. Smaller pack sizes are also offered for laboratory and formulation development use to meet diverse industrial requirements.

Physical Properties

Melting Point	-85 °C
Boiling Point	140-145 °C @ Press: 2-3 Torr
Density	0.9900 g/cm³ @ Temp: 20 °C; Press: 759.8 Torr
Flash Point	>230 °F
Appearance	CLEAR COLOURLESS TO SLIGHTLY YELLOWISH LIQUID
Color	Clear colorless to light yellow
Form	Liquid
Water Solubility	insoluble
Vapor Pressure	0.0027 hPa (20 °C)
Refractive Index	n 20/D 1.445(lit.)
Log P	3.39 at 25℃

Safety & Handling

Warning GHS07 GHS08 Hazard Statements H315 Causes skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H335 May cause respiratory irritation H373 May causes damage to organs through prolonged or repeated exposure H402 Harmful to aquatic life Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29171990
Storage Class	10 - Combustible liquids
WGK (Germany)	1

Other Names

Industries

Printing & Packaging Plastics & Polymers Food & Nutrition Personal Care & Cosmetics