2,2,4-Trimethyl-1,3-pentanediol (TMPD Glycol) CAS 144-19-4

Chemical Name: 2,2,4-Trimethyl-1,3-pentanediol
CAS No.: 144-19-4
Molecular Formula: C₈H₁₈O₂
Molecular Weight: 146.23
Look:White crystalline solid / off-white crystal

2,2,4-Trimethyl-1,3-pentanediol, abbreviated as TMPD, CAS 144-19-4, is a specialty aliphatic asymmetrical diol with sterically hindered hydroxyl groups. Compared with conventional diols like NPG, its unique branched molecular structure brings superior film-forming ability, moderate hydroxyl activity, low volatility and outstanding resin compatibility.

It is widely used globally as coalescing agent, resin monomer, plasticizer and additive in waterborne coatings, printing inks, polyester polymers, synthetic lubricants and adhesives industry.

Item	Standard Parameter
CAS No.	144-19-4
IUPAC Name	2,2,4-Trimethyl-1,3-pentanediol
Common Alias	TMPD, TMPD Glycol, 1,3-Dihydroxy-2,2,4-trimethylpentane
Molecular Formula	C₈H₁₈O₂
Molecular Weight	146.23
EINECS / EC No.	205-619-1
Purity (GC)	≥97% / ≥98%
Characteristic	Asymmetrical diol structure, sterically hindered hydroxyl groups, low volatility, good compatibility with resins

Water-Based Coatings (Core Application)
Waterborne architectural latex paint, industrial water-based anti-corrosion coating, wood water paint, metal water baking paint; used as coalescing solvent to optimize film flatness and toughness
Polyester & Polyurethane Resins
Synthesize saturated polyester resin, alkyd resin, polyester polyol for PU adhesives & sealants; adjust resin hardness, flexibility and hydrolysis resistance
Printing Inks & Coatings Additives
Solvent for offset printing ink, gravure ink, improve ink leveling, anti-blocking property
Synthetic Lubricants & Fine Chemicals
Raw material for high-temperature resistant synthetic ester lubricants, plasticizer, insect repellent intermediates
Other Areas
Household cleaning formulations, cosmetic solvent auxiliary, food contact compliant additives (FDA approved)

Excellent coalescing performance: Perfect film-forming auxiliary for latex paint, reduce minimum film forming temperature (MFFT) effectively
Steric hindrance structure: Slow esterification reaction rate, stable synthesis process, less yellowing for cured resin
Low volatility & low odor: Less VOC emission, compliant with environmental paint standards
Great compatibility: Miscible with most alkyd resin, PU resin, acrylic emulsion systems
Stable batch quality: Low impurity content, consistent film texture for downstream production

Standard Packing: 25kg woven bag with inner PE plastic liner
Bulk Option: 500kg / 1000kg IBC tote tank
Storage: Sealed store in cool, dry & ventilated warehouse, avoid high temperature and damp environment to prevent caking
Hazard Classification: Low irritant chemical, non-flammable, safe ocean & land transportatio

Q1: What is the CAS number of TMPD glycol?
A1: The official CAS number is 144-19-4, full chemical name: 2,2,4-Trimethyl-1,3-pentanediol, short name TMPD.

Q2: Is TMPD soluble in water?
A2: Slightly soluble in water; freely soluble in ethanol, acetone, benzene, ether and all aromatic organic solvents.

Q3: Will TMPD turn yellow during resin synthesis?
A3: Its sterically hindered hydroxyl structure greatly inhibits yellowing, better anti-yellowing performance than ordinary straight-chain diols.

Q4: What is the main usage of TMPD CAS 144-19-4?
A4: Mostly used as coalescing agent for water-based latex paint; also monomer for polyester resin, printing ink solvent, synthetic lubricant raw material.

Q5: Delivery cycle?
A5: Spot goods deliver within 7-10 working days; mass customized orders 15-20 working days