Di(trimethylol propane)

Synonym(s):2,2′-Oxybis(methylene)bis(2-ethyl-1,3-propanediol)

CAS NO.：23235-61-2
Empirical Formula: C12H26O5
Molecular Weight: 250.33
MDL number: MFCD00192117
EINECS: 245-509-0
SAFETY DATA SHEET (SDS)
Update Date: 2025-01-27 09:38:02

What is Di(trimethylol propane)?

Description

Di(trimethylol propane), Di-TMP, 2,2-[oxybis(methylene)]-bis(2-ethyl)-1,3-propanediol is a colorless and crystalline substance (mp 112 – 114 ℃), only slightly soluble in water at ambient temperature (2.6 g/100 g at 25 ℃).It is a byproduct of 2-ethyl-2-hydroxymethyl-1,3-propanediol (TMP) production and can be isolated from the residue of the TMP distillation step. Newer investigations show that ditrimethylolpropane can be prepared in high yield and selectivity by the reaction of TMP, formaldehyde, and 2-ethylacrolein.

The Uses of Di(trimethylol propane)

Di(trimethylolpropane) can be used for the synthesis of lipase catalyzed hyperbranched polymers. It can also be used in the formation of biodegradable polymers for drug delivery applications.

What are the applications of Application

Di-trimethylolpropane is mainly used for production of acrylic monomers and oligomers for radiation-curable coatings and inks, including lithography, ink jet, and flexography inks. Di-TMP tetraacrylate has a very high reactivity, low skin irritation, and gives coatings with good scratch and chemical resistance, hence it also find uses in hard coats for electronics. Di-TMP is used as costabilizer in some lead-free PVC stabilizers based on calcium – zinc. Minor uses are in coating resins and synthetic lubricants.

Synthesis Reference(s)

Canadian Journal of Chemistry, 53, p. 1103, 1975 DOI: 10.1139/v75-154

General Description

Di(trimethylolpropane) is a monomeric unit with primary hydroxyl groups, that can be used as a tetrafunctional core molecule.

Flammability and Explosibility

Not classified

Properties of Di(trimethylol propane)

Melting point:	108-111 °C(lit.)
Boiling point:	215 °C4 mm Hg(lit.)
Density	1.0187 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.4560 (estimate)
solubility	soluble in Methanol
form	powder to crystal
pka	13.90±0.10(Predicted)
color	White to Almost white
Water Solubility	21g/L at 20℃
BRN	1860782
EPA Substance Registry System	1,3-Propanediol, 2,2'-[oxybis(methylene)]bis[2-ethyl- (23235-61-2)

Safety information for Di(trimethylol propane)

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.