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2,2,4-Trimethyl-1,3-pentanediol

CAS Number
144-19-4
EC Number
205-619-1
Chemical Formula
C8H18O2
Molecular Weight
146.23 g/mol

Description

2,2,4-Trimethyl-1,3-pentanediol (CAS 144-19-4 ), commonly known as TMPD, is a specialty diol used across coatings, adhesives, and polymer systems. It functions as a coalescing solvent, plasticizer, and rheology modifier. This chemical helps formulators balance film formation, flexibility, and flow properties in finished products. In waterborne architectural and industrial coatings, it acts as a coalescing agent that improves film formation. It performs well at low temperatures without the regulatory burden of conventional glycol ethers. Adhesive and sealant manufacturers incorporate it to enhance flexibility and substrate adhesion in polyurethane and acrylic formulations. In polyester resin synthesis, it serves as a diol monomer that introduces branching to control hardness and flexibility. This ensures compatibility with other resin components during the manufacturing process. Cleaning product formulators use it as a carrier solvent where low volatility is required. It provides good solvency for organic soils in hard-surface and industrial cleaning concentrates for professional use. TMPD is supplied as a white crystalline solid or low-melting flake, with liquid form available in heated bulk supply. Standard commercial grades include technical and coatings-grade material with high purity. The purity is typically at 98% or higher to meet industrial requirements. Packaging options range from drums to bulk isotanks for high-volume coatings and resin producers requiring consistent supply chains. Contact us for supply of 2,2,4-Trimethyl-1,3-pentanediol Request Quote

Other Names (Synonyms)

2,2,4-Trimethylpentane-1,3-diol | 1,3-Pentanediol, 2,2,4-trimethyl- | TMPD (alcohol) | Trimethyl-1,3-Pentanediol | Caswell No. 893 | Nexcoat 795 | UCAR FILMER IBT | TMPD

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point51-52 °C
Boiling Point234 °C @ Press: 737 Torr
Density0.937 g/cm³ @ Temp: 15 °C
Flash Point>230 °F
Appearance(96% pure): White solid. Slightly soluble in water
soluble in alcohol, acetone, ether, and benzene. Combustible.
ColorOff-White
FormSolid
Water Solubility31.5g/L at 20℃
Vapor Pressure0.314Pa at 20℃
Refractive Index1.4513
Log P1.25 at 22℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code2905.39.9000
Storage Class11 - Combustible Solids
WGK (Germany)1