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Propanediol, 2-(hydroxymethyl)-2-methyl- is a compact trifunctional aliphatic polyol commonly known as trimethylolethane.
Propanediol, 2-(hydroxymethyl)-2-methyl- contains three reactive primary hydroxyl groups attached around a quaternary central carbon atom.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used principally as a building block for alkyd resins, saturated polyesters, coatings, polyurethane intermediates, esters, plasticizers, lubricants, and specialty crosslinking systems.
CAS Number: 77-85-0
EC Number: 201-063-9
Molecular Formula: C5H12O3
Molecular Weight: 120.15 g/mol
Synonyms: Propanediol, 2-(hydroxymethyl)-2-methyl-, 1,3-Propanediol, 2-(hydroxymethyl)-2-methyl-, Trimethylolethane, Trimethylol Ethane, TME, 1,1,1-Trimethylolethane, 1,1,1-Tris(hydroxymethyl)ethane, 1,1,1-Tris(hydroxymethyl)ethane, Tris(hydroxymethyl)ethane, Ethane 1,1,1-Tris(hydroxymethyl)-, 2-(Hydroxymethyl)-2-methylpropane-1,3-diol, 2-(Hydroxymethyl)-2-methyl-1,3-propanediol, 2-Methyl-2-(hydroxymethyl)-1,3-propanediol, 2-Methyl-2-hydroxymethylpropane-1,3-diol, 2-Methyl-2-(hydroxymethyl)propanediol, 2,2-Bis(hydroxymethyl)-1-propanol, 2,2-Di(hydroxymethyl)propanol, 1,1,1-Trimethanolethane, 1,1,1-Tris(methylol)ethane, Methyltrimethanolmethane, Methyltrimethylolmethane, Ethylidynetrimethanol, Methriol, Metriol, Trimet, TRIMET TME, Pentaglycerine, Pentaglycerol, Isopentanetriol, Neopentyl-Type Triol, Trifunctional Polyol, Aliphatic Triol, Primary-Hydroxyl Triol, Resin-Grade Trimethylolethane, Coating-Grade Trimethylolethane, High-Purity Trimethylolethane, CAS 77-85-0, EC 201-063-9, PubChem CID 6502, UNII 5D10NYN23W, RTECS TY7137500, DTXSID2026444
APPLICATIONS
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a trifunctional polyol in synthetic-resin manufacture.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce branching into polyester and alkyd structures.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to increase the functional-group density of reactive resin systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used where three primary hydroxyl groups are required from a low-molecular-weight building block.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in alkyd-resin synthesis.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to prepare short-, medium-, and long-oil alkyd intermediates.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to modify resin branching, molecular weight, and hydroxyl functionality.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to balance film hardness, flexibility, drying behavior, and solvent resistance.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in saturated polyester-resin synthesis.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to produce branched polyester structures.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce terminal hydroxyl groups for subsequent crosslinking.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after acid value, hydroxyl value, viscosity, and molecular-weight distribution have been optimized.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in leather-finish formulations.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a resin-building component for flexible surface finishes.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used where adhesion and controlled crosslinking are required.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after flex resistance, rub resistance, feel, and color stability have been evaluated.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in powder-coating polyester research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce controlled branching into solid polyester binders.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to adjust melt viscosity and reactive functionality.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after extrusion stability, storage stability, flow, and cure response have been tested.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in hydroxyl-functional polyester resins.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to prepare resins crosslinked with suitable isocyanates or amino resins.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to control the number of reactive hydroxyl groups in the finished polymer.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after equivalent ratios and cure conditions have been established.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in carboxyl-functional polyester development.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in formulations crosslinked with epoxy-functional curing agents.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence branching without introducing secondary hydroxyl groups.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after gelation risk and resin-processability have been assessed.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyurethane intermediates.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a low-molecular-weight triol in selected polyurethane systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to increase branching and crosslink density.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used only after hydroxyl-to-isocyanate stoichiometry has been calculated correctly.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyurethane coatings.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a component of polyester-polyol or chain-branching systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to modify hardness, chemical resistance, and film durability.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after pot life, cure speed, flexibility, and residual-isocyanate testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyurethane adhesives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce trifunctionality into reactive adhesive polymers.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to modify cohesive strength and heat resistance.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after bond strength, open time, flexibility, and substrate compatibility have been validated.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in sealant and elastomer research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a branching component in selected reactive-polymer systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used at controlled levels to avoid excessive brittleness.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after tensile, elongation, tear, compression-set, and aging tests.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in amino-resin-crosslinked coatings.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to prepare hydroxyl-functional binders cured with melamine or related resins.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence cure density and solvent resistance.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after bake temperature, catalyst level, and formaldehyde emissions have been assessed.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyester-amide and hybrid-resin research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a multifunctional alcohol in condensation-polymerization processes.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to adjust branching and terminal functionality.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after gel-point calculations and reaction monitoring have been established.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyester plasticizer manufacture.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to prepare branched esters with mono- and polycarboxylic acids.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence molecular weight, permanence, and compatibility.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after migration, volatility, extraction, and low-temperature tests.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to manufacture trimethylolethane esters.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to prepare complete triesters and partially esterified derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used with fatty acids, aromatic acids, and other suitable carboxylic acids.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after esterification conversion and residual hydroxyl and acid values have been measured.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in synthetic-lubricant ester research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as the polyol core of selected branched ester lubricants.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to produce fluids with low volatility and useful lubricity.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after viscosity, pour point, oxidation, hydrolysis, and seal compatibility testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in reactive-diluent and crosslinker synthesis.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to manufacture acrylate, methacrylate, allyl, carbonate, and other functional derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce three potential reactive arms into specialty monomers.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after residual monomer, functionality, viscosity, and cure response have been controlled.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in radiation-curable monomer research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a precursor to multifunctional acrylate and methacrylate derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to support rapid crosslinking in UV- or electron-beam-curable formulations.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after skin-sensitization hazards of the resulting acrylate derivatives have been assessed.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in printing-ink resin development.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in alkyd, polyester, and reactive-monomer intermediates for inks.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence cure, gloss, hardness, and chemical resistance.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after pigment wetting, printability, blocking, and adhesion testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in varnish and overprint-coating intermediates.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to produce branched resins with controlled film-forming behavior.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used where high gloss and resistance are required.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after substrate, curing, odor, and migration requirements have been reviewed.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in titanium-dioxide surface treatment.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in selected processes intended to modify pigment-surface behavior.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to support pigment dispersibility and compatibility in suitable systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after pigment color, gloss, viscosity, and weathering performance have been tested.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in pigment-dispersion research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a precursor to surface-active or resin-compatible derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in coatings, inks, and plastics requiring uniform pigment distribution.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after dispersion stability and color-development testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in paper-coating resin manufacture.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polymer intermediates for specialty coated papers.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence binder strength, water resistance, and surface durability.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after printability, coating holdout, blocking, and recycling considerations.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in fabricated-metal product coatings.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in resins applied to machinery, appliances, components, and industrial equipment.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used where chemical and environmental durability are required.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after cure, corrosion, adhesion, impact, and humidity testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in specialty plastics manufacture.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a branching or crosslinking building block in selected polymer systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce three hydroxyl-derived linkages.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after process temperature, gelation, mechanical properties, and extractables have been evaluated.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polycarbonate and carbonate-derivative research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to introduce branched carbonate structures.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a precursor to specialty cyclic and polymeric carbonate materials.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after residual catalyst, thermal stability, and molecular structure have been characterized.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in epoxy-resin modifier research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a precursor to glycidyl-ether and other epoxy-functional derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to produce multifunctional intermediates for thermosetting systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after epoxide value, hydrolyzable chlorine, viscosity, and cure behavior have been controlled.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in adhesive-resin development.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polyester, polyurethane, and thermosetting adhesive intermediates.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to adjust branching, cohesion, and thermal resistance.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after peel, shear, creep, aging, and substrate tests.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in composite-resin development.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in branched polyester and thermosetting-resin intermediates.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to influence crosslink density and dimensional stability.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after fiber wetting, cure shrinkage, heat distortion, and mechanical testing.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in polymer-modification research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to compare compact triol structures with glycerol, trimethylolpropane, and pentaerythritol.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to examine how branching affects viscosity, glass-transition temperature, and durability.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used under controlled equivalent ratios and reaction conditions.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in thermoset-network research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to study gelation and network formation in multifunctional systems.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to vary junction density in model polymer networks.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after conversion, swelling, modulus, and network-defect measurements.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in phase-transition research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a model hydrogen-bonded molecular crystal.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to study solid–solid transitions and orientational disorder.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in calorimetry, crystallography, spectroscopy, and thermodynamic measurements.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a laboratory reagent.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in esterification, etherification, urethane, carbonate, and condensation studies.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used as a reference trifunctional alcohol.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used at the purity required by the analytical or synthetic procedure.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in chromatographic and spectroscopic research.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used to characterize polyol purity and reaction conversion.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in infrared, nuclear-magnetic-resonance, mass-spectrometry, and thermal-analysis studies.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used with suitable standards and validated analytical methods.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in quality-control laboratories.
Propanediol, 2-(hydroxymethyl)-2-methyl- is tested for identity, assay, melting range, water, color, and ash.
Propanediol, 2-(hydroxymethyl)-2-methyl- is evaluated for residual aldehydes, formates, salts, and process impurities where relevant.
Propanediol, 2-(hydroxymethyl)-2-methyl- is released according to the agreed specification and certificate of analysis.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used in commercial manufacturing after incoming-material verification.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after purity, water content, appearance, and melting behavior have been checked.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used after its contribution to hydroxyl equivalents has been calculated.
Propanediol, 2-(hydroxymethyl)-2-methyl- is used according to the current technical data sheet and regional safety data sheet.
DESCRIPTION
Propanediol, 2-(hydroxymethyl)-2-methyl- is commonly known as trimethylolethane.
Propanediol, 2-(hydroxymethyl)-2-methyl- is a saturated aliphatic triol.
Propanediol, 2-(hydroxymethyl)-2-methyl- contains three primary hydroxymethyl groups.
Propanediol, 2-(hydroxymethyl)-2-methyl- contains one methyl substituent attached to its central carbon atom.
Propanediol, 2-(hydroxymethyl)-2-methyl- has the molecular formula C5H12O3.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a molecular weight of approximately 120.15 g/mol.
Propanediol, 2-(hydroxymethyl)-2-methyl- has CAS number 77-85-0.
Propanediol, 2-(hydroxymethyl)-2-methyl- has EC number 201-063-9.
Propanediol, 2-(hydroxymethyl)-2-methyl- has PubChem CID 6502.
Propanediol, 2-(hydroxymethyl)-2-methyl- has UNII 5D10NYN23W.
Propanediol, 2-(hydroxymethyl)-2-methyl- has the InChIKey QXJQHYBHAIHNGG-UHFFFAOYSA-N.
Propanediol, 2-(hydroxymethyl)-2-methyl- has the simplified structural representation CC(CO)(CO)CO.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a neopentyl-type molecular structure.
Propanediol, 2-(hydroxymethyl)-2-methyl- central carbon atom is bonded to one methyl group and three hydroxymethyl groups.
Propanediol, 2-(hydroxymethyl)-2-methyl- has no hydrogen atom attached directly to its central carbon.
Propanediol, 2-(hydroxymethyl)-2-methyl- compact structure helps distinguish it from glycerol and linear triols.
Propanediol, 2-(hydroxymethyl)-2-methyl- is closely related structurally to trimethylolpropane.
Propanediol, 2-(hydroxymethyl)-2-methyl- contains a methyl group where trimethylolpropane contains an ethyl group.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a lower molecular weight than trimethylolpropane.
Propanediol, 2-(hydroxymethyl)-2-methyl- provides a higher theoretical hydroxyl concentration by mass than trimethylolpropane.
Propanediol, 2-(hydroxymethyl)-2-methyl- has three equivalent primary hydroxyl groups in its ideal molecular structure.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a theoretical hydroxyl functionality of three.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a theoretical hydroxyl equivalent weight of approximately 40.05 g per equivalent.
Propanediol, 2-(hydroxymethyl)-2-methyl- has a theoretical hydroxyl number near 1,400 mg KOH/g when calculated as pure material.
Propanediol, 2-(hydroxymethyl)-2-methyl- is normally supplied as a white crystalline solid or powder.
Propanediol, 2-(hydroxymethyl)-2-methyl- is generally odorless or nearly odorless.
Propanediol, 2-(hydroxymethyl)-2-methyl- appearance can vary with particle size, purity, moisture, and storage conditions.
Propanediol, 2-(hydroxymethyl)-2-methyl- should not be identified by appearance alone.
Propanediol, 2-(hydroxymethyl)-2-methyl- is highly soluble in water.
Propanediol, 2-(hydroxymethyl)-2-methyl- has reported water solubility near 600 g/L at 20°C.
Propanediol, 2-(hydroxymethyl)-2-methyl- is soluble in alcohol.
Propanediol, 2-(hydroxymethyl)-2-methyl- is reported as insoluble or poorly soluble in benzene and ether.
Propanediol, 2-(hydroxymethyl)-2-methyl- strong water solubility results from its three hydroxyl groups.
Propanediol, 2-(hydroxymethyl)-2-methyl- forms extensive hydrogen-bonding interactions.
Propanediol, 2-(hydroxymethyl)-2-methyl- may absorb atmospheric moisture to a grade-dependent extent.
Propanediol, 2-(hydroxymethyl)-2-methyl- should be protected from uncontrolled humidity during storage.
Propanediol, 2-(hydroxymethyl)-2-methyl- reacts readily with carboxylic acids.
Propanediol, 2-(hydroxymethyl)-2-methyl- can form monoesters, diesters, and triesters.
Propanediol, 2-(hydroxymethyl)-2-methyl- can be incorporated into polyester chains and branched networks.
Propanediol, 2-(hydroxymethyl)-2-methyl- esterification releases water that must be removed or controlled during resin manufacture.
Propanediol, 2-(hydroxymethyl)-2-methyl- reacts with isocyanates to form urethane linkages.
Propanediol, 2-(hydroxymethyl)-2-methyl- can function as a branching or crosslinking polyol in polyurethane chemistry.
Propanediol, 2-(hydroxymethyl)-2-methyl- reaction rate depends on catalyst, temperature, solvent, and isocyanate structure.
Propanediol, 2-(hydroxymethyl)-2-methyl- use requires accurate moisture and equivalent control.
Propanediol, 2-(hydroxymethyl)-2-methyl- can be etherified or alkoxylated.
Propanediol, 2-(hydroxymethyl)-2-methyl- can be converted into glycidyl, allyl, acrylate, methacrylate, carbonate, and other derivatives.
Propanediol, 2-(hydroxymethyl)-2-methyl- derivative functionality depends on the degree of substitution.
Propanediol, 2-(hydroxymethyl)-2-methyl- derivative hazards can differ substantially from those of the parent triol.
Propanediol, 2-(hydroxymethyl)-2-methyl- technical grades may contain water, formate salts, residual aldehydes, and related polyols.
Propanediol, 2-(hydroxymethyl)-2-methyl- high-purity grades impose tighter limits on color and inorganic residues.
Propanediol, 2-(hydroxymethyl)-2-methyl- laboratory grades may specify purity by gas chromatography.
Propanediol, 2-(hydroxymethyl)-2-methyl- TCI lists a reagent product with minimum purity of 98%.
Propanediol, 2-(hydroxymethyl)-2-methyl- is not currently shown by PubChem with a primary GHS hazard classification.
Propanediol, 2-(hydroxymethyl)-2-methyl- does not have a universally harmonized hazard profile applicable to every commercial grade.
Propanediol, 2-(hydroxymethyl)-2-methyl- supplier classifications and precautionary language can vary.
Propanediol, 2-(hydroxymethyl)-2-methyl- current regional SDS should control workplace labeling and protective measures.
Propanediol, 2-(hydroxymethyl)-2-methyl- has shown relatively low acute oral toxicity in an OECD-type screening record.
Propanediol, 2-(hydroxymethyl)-2-methyl- reported rat oral LD50 was greater than 2,000 mg/kg in the cited screening summary.
Propanediol, 2-(hydroxymethyl)-2-methyl- low acute toxicity does not eliminate risks from dust or prolonged exposure.
Propanediol, 2-(hydroxymethyl)-2-methyl- should be handled using normal industrial hygiene precautions.
Propanediol, 2-(hydroxymethyl)-2-methyl- dust may mechanically irritate the eyes and respiratory tract.
Propanediol, 2-(hydroxymethyl)-2-methyl- prolonged or repeated skin contact should be avoided.
Propanediol, 2-(hydroxymethyl)-2-methyl- heated material can cause thermal burns.
Propanediol, 2-(hydroxymethyl)-2-methyl- decomposition fumes should not be inhaled.
Propanediol, 2-(hydroxymethyl)-2-methyl- is an organic combustible solid despite its high melting point.
Propanediol, 2-(hydroxymethyl)-2-methyl- fine airborne dust can present a combustible-dust concern under unfavorable conditions.
Propanediol, 2-(hydroxymethyl)-2-methyl- combustion can generate carbon monoxide, carbon dioxide, and irritating smoke.
Propanediol, 2-(hydroxymethyl)-2-methyl- should be kept away from strong oxidizers and uncontrolled ignition sources.
Propanediol, 2-(hydroxymethyl)-2-methyl- is primarily an industrial and laboratory chemical intermediate.
Propanediol, 2-(hydroxymethyl)-2-methyl- is not automatically suitable for food, cosmetic, pharmaceutical, or medical use.
Propanediol, 2-(hydroxymethyl)-2-methyl- regulated uses require an appropriate grade and supporting documentation.
Propanediol, 2-(hydroxymethyl)-2-methyl- grade selection must be based on the intended application and destination jurisdiction.
PROPERTIES
Chemical Name: 2-(Hydroxymethyl)-2-methylpropane-1,3-diol
Index Name: 1,3-Propanediol, 2-(hydroxymethyl)-2-methyl-
Common Name: Trimethylolethane
Common Abbreviation: TME
Chemical Family: Aliphatic polyols
Functional Class: Trifunctional primary alcohol
CAS Number: 77-85-0
EC Number: 201-063-9
PubChem CID: 6502
UNII: 5D10NYN23W
RTECS Number: TY7137500
DSSTox Identifier: DTXSID2026444
InChIKey: QXJQHYBHAIHNGG-UHFFFAOYSA-N
Molecular Formula: C5H12O3
Molecular Weight: 120.15 g/mol
Condensed Structural Formula: CH3C(CH2OH)3
SMILES: CC(CO)(CO)CO
Hydroxyl Functionality: 3
Hydroxyl Type: Three primary hydroxyl groups
Theoretical Hydroxyl Equivalent Weight: Approximately 40.05 g/eq
Theoretical Hydroxyl Number: Approximately 1,400 mg KOH/g
Physical State: Solid
Typical Appearance: White crystalline solid, crystals, flakes, or powder
Odor: Odorless or nearly odorless
Representative Purity: Common reagent and industrial grades are approximately 98% or higher
Representative Melting Range: Approximately 197–203°C
NIST Fusion Temperature Range: Approximately 470–474 K
Representative Solid–Solid Transition: Approximately 81–85°C
Representative Reduced-Pressure Boiling Point: Approximately 137°C at 15 mmHg
Water Solubility: Highly soluble
Representative Water Solubility: Approximately 600 g/L at 20°C
Alcohol Solubility: Soluble
Benzene Solubility: Insoluble or very limited
Ether Solubility: Insoluble or very limited
Volatility at Room Temperature: Very low
Vapor Exposure Potential: Low except during heating or dust-generating operations
Primary Chemical Reactions: Esterification, etherification, urethane formation, carbonate formation, and condensation polymerization
Primary Industrial Function: Polyol building block and branching monomer
Primary Resin Applications: Alkyds, saturated polyesters, polyurethane intermediates, and specialty thermosetting resins
Primary Coating Applications: Architectural, automotive, industrial, wood, leather, powder, and protective coatings
Primary Derivative Applications: Esters, plasticizers, lubricant intermediates, reactive monomers, surfactants, and epoxy-functional derivatives
Pigment Application: Selected titanium-dioxide surface-treatment processes
PubChem Primary Hazard Summary: Not classified
Acute Oral Toxicity Screening: Reported LD50 greater than 2,000 mg/kg in rats
Dust Hazard: Possible mechanical irritation and combustible-dust risk
Combustibility: Combustible organic solid
Thermal-Decomposition Products: Carbon monoxide, carbon dioxide, and irritating fumes
Incompatible Materials: Strong oxidizing agents and strongly reactive chemicals
Transport Status: Commonly not regulated as dangerous goods, but verify the exact supplier SDS
Food Suitability: Not established for general food use
Cosmetic Suitability: Grade and regulatory support required
Pharmaceutical Suitability: Grade and regulatory support required
Storage Conditions: Cool, dry, well-ventilated storage
Storage Container: Tightly closed, moisture-resistant, compatible packaging
Storage Protection: Protect from moisture, contamination, excessive heat, and oxidizers
Shelf Life: Grade, purity, packaging, and manufacturer dependent
Regulatory Suitability: Application, grade, purity, exposure scenario, and jurisdiction dependent
FIRST AID
Inhalation:
Move the affected person to fresh air after substantial dust or decomposition-fume exposure.
Obtain medical attention if coughing, throat irritation, or breathing discomfort persists.
Skin Contact:
Remove contaminated clothing and wash the affected skin thoroughly with soap and water.
Obtain medical advice if irritation develops or continues.
Eye Contact:
Rinse cautiously with clean water for at least 15 minutes.
Remove contact lenses if easy to do and obtain medical evaluation if discomfort or redness persists.
Ingestion:
Rinse the mouth and give water if the person is conscious.
Obtain medical advice after substantial accidental ingestion or if symptoms develop.
Thermal Contact:
Cool skin exposed to molten or heated product with clean running water.
Do not remove solidified material forcibly from the skin and obtain medical attention for burns.
Note to Physicians:
Treat symptomatically and provide supportive care.
Consult the current supplier safety data sheet for grade-specific information.
HANDLING AND STORAGE
Handling:
Avoid generating or inhaling dust.
Avoid unnecessary skin and eye contact and prevent contamination of clothing.
Engineering Controls:
Provide general ventilation and local dust extraction at weighing, charging, milling, and packaging points.
Provide local exhaust where the material is melted or processed at elevated temperature.
Personal Protection:
Wear suitable protective gloves, safety glasses, and work clothing.
Use particulate respiratory protection when dust cannot be controlled adequately.
Storage:
Store in tightly closed compatible containers in a cool, dry, and well-ventilated area.
Protect the material from atmospheric moisture, contamination, strong oxidizers, and excessive heat.
Spill and Leak Procedures:
Collect spilled solid mechanically while minimizing airborne dust.
Place the recovered material in a clean, labeled container for reuse or disposal.
Fire Precautions:
Avoid accumulation of fine dust on equipment and building surfaces.
Use extinguishing media appropriate to the surrounding fire and wear respiratory protection where decomposition fumes may occur.
Handling Precautions:
Account for the solid–solid transition and high melting point when designing heated processing equipment.
Prevent local overheating during melting or resin charging.
Follow the current technical data sheet, certificate of analysis, regional safety data sheet, and applicable industrial regulations.
