Triisopropanolamine (TIPA) CAS 122-20-3

What is Triisopropanolamine (TIPA)?

Triisopropanolamine is the fully substituted member of the isopropanolamine family — a tertiary amine carrying three hydroxypropyl arms, N[CH₂CH(OH)CH₃]₃. It is the propylene oxide counterpart of triethanolamine, and in its dominant market the two are complements rather than alternatives.

It is a white crystalline solid melting at about 45 °C, supplied as flakes or as an 85% aqueous solution. Like TEA it is strongly hygroscopic, highly water-soluble, and has no N-H bond at all — so it cannot form a carbamate and has no role in bulk acid gas absorption.

What TIPA does have is an unusually specific and valuable effect in cement. Added to a grinding aid at very low dosage, it improves the later strength development of the hardened cement — the 7-day and 28-day figures that structural specifications are written against — by complexing the iron-bearing phases and promoting their hydration. TEA, by contrast, is the better grinding efficiency aid and favours early strength. Most commercial packages therefore contain both.

Beyond cement, TIPA is used in metalworking fluids, corrosion inhibitors, surfactants and as a non-volatile base and chelant in a range of industrial formulations.

Why triisopropanolamine specifically

• Late strength development in cement. Promotes hydration of the iron-bearing ferrite phase, which contributes most to 7-day and 28-day strength — a different and complementary effect to TEA's.
• No N-H bond. A tertiary amine, so it cannot form a carbamate, cannot be nitrosated directly, and acts as a base and chelant rather than as a reactive building block.
• Strong metal complexation. The nitrogen plus three secondary hydroxyls chelate transition metals effectively, which is the mechanism behind both the cement effect and its use as a sequestrant.
• Non-volatile and persistent. It stays where it is put, which suits formulations where a volatile base would flash off.

How TIPA is Manufactured

Triisopropanolamine is made alongside MIPA and DIPA by reacting propylene oxide with ammonia. A plant configured for TIPA runs the lowest ammonia ratio of the three.

• Propoxylation of ammonia. Aqueous ammonia is reacted with propylene oxide. Each isopropanolamine formed competes for the next molecule of propylene oxide, so with a low ammonia ratio the reaction runs onward to the tri product.
• Ratio control. TIPA is favoured by a low ammonia-to-propylene-oxide ratio. Because the distribution is set by stoichiometry rather than catalyst selectivity, producers swing between the three products rather than making one exclusively.
• Separation. Ammonia is stripped and recycled, water removed, and the three isopropanolamines separated by vacuum distillation. TIPA is the highest-boiling and therefore the most thermally stressed.
• Flaking and solution preparation. The TIPA cut is flaked or prilled, or dissolved to make the 85% aqueous solution that most cement additive producers use.

Typical Commercial Specification

Figures below are representative of commercial flake grade. The 85% solution, cement-additive and low-colour grades are available — send us the specification you work to and we will quote against it.

Physical & Chemical Properties

Reactivity in practice

No N-H, three secondary hydroxyls, and a strongly chelating nitrogen. Its chemistry is complexation and base action rather than substitution:

• Metal complexation. Chelates iron, copper and other transition metals through the nitrogen lone pair and the three hydroxyls — the mechanism behind both its cement effect and its sequestrant use.
• Salt formation. Neutralises acids to give soluble salts, and fatty acids to give low-foaming soaps used in industrial fluids.
• Esterification at the hydroxyls. The three secondary alcohols esterify and alkoxylate, though more slowly than the primary hydroxyls of TEA.
• pH buffering. A weak, entirely non-volatile base that sets and holds pH without evaporating from the formulation.

TIPA vs TEA, DIPA and MIPA

The isopropanolamines are the propylene oxide counterparts of the ethanolamines, and the comparison that matters most to a buyer runs across that divide rather than within the family. Swapping ethylene oxide for propylene oxide adds a methyl group to each arm, which makes the molecule bulkier, more oil-compatible, less prone to foaming — and turns the secondary hydroxyl into a slower, more selective reaction partner.

Stated plainly: the extra methyl group on each arm makes the isopropanolamines less foaming and more oil-tolerant than the ethanolamines, which is why metalworking fluid formulators favour MIPA over MEA. In cement, TIPA and TEA do genuinely different jobs — TEA improves grinding efficiency and early strength, TIPA improves late strength by complexing the iron phases — which is why commercial grinding aid packages routinely contain both rather than choosing one. They are complements more often than substitutes.

Industries We Supply TIPA To

The same molecule leaves our warehouse for very different factories, though one dominates. What changes between them is the form — flake or 85% solution — the grade, and the documentation each sector expects.

Where TIPA is Used

TIPA is overwhelmingly a cement chemical, with a useful set of secondary markets. These are the end uses our customers buy it for.

In cement strength enhancement

This is TIPA's defining use and the reason it commands a premium over the other alkanolamines. Portland cement contains several mineral phases, and they hydrate at different rates — the silicates drive most of the strength, while the iron-bearing ferrite phase hydrates slowly and contributes relatively little. TIPA complexes iron and accelerates the hydration of that phase, which releases strength that would otherwise develop very late or not at all. The effect shows up in the 7-day and 28-day compressive strength figures that structural specifications are written against. For a cement producer, a small dosage that lifts 28-day strength can allow a higher proportion of supplementary cementitious material in the mix, which is both a cost and a carbon saving.

TIPA versus TEA in grinding aids

These two are routinely compared and routinely used together, because they do different jobs. TEA is the better grinding efficiency aid — it adsorbs onto fresh fracture surfaces and prevents agglomeration, improving mill throughput — and it tends to favour early strength. TIPA contributes less to grinding and more to late strength through its iron-complexing effect. A commercial grinding aid package will often contain both, tuned to the clinker chemistry and to whether the producer is chasing throughput, early strength, late strength or the ability to extend with slag or fly ash. Substituting one for the other changes the performance profile rather than reducing cost neutrally.

In metalworking fluids

TIPA provides alkalinity reserve and emulsification in water-based cutting and grinding fluids. Its particular attraction is that it is a tertiary amine with no N-H bond, so it cannot be nitrosated directly — a meaningful advantage in a sector that moved away from diethanolamine for exactly that reason. It is also non-volatile, so the alkalinity reserve persists in a recirculating system rather than being lost over time.

As a chelant and non-volatile base

The nitrogen and three hydroxyls make TIPA an effective complexing agent for transition metals, used as a sequestrant in cleaning formulations and industrial processes. Its complete non-volatility means it stays in a formulation rather than evaporating, which is an advantage where persistent alkalinity or sustained metal control is wanted and a drawback where the base is meant to flash off during cure.

Quality Control & Testing

Every lot is released against a batch-specific Certificate of Analysis. The methods behind the numbers are standard across the industry, and we are happy to share them or to work to your own in-house test protocol.

• Amine value — titration. This is the figure cement additive producers formulate against, and it should be agreed before assay is discussed.
• Isopropanolamine distribution — gas chromatography quantifying DIPA and MIPA carry-over. Consistency between deliveries matters more here than absolute purity.
• Colour — APHA / Hazen on melted material. TIPA is the highest-boiling of the family and therefore the most thermally stressed in manufacture, so colour varies more between producers than it does for MIPA.
• Water content — Karl Fischer titration on flake grade, which is strongly hygroscopic.
• Melting point — a fast check for water or cross-contamination before any instrument confirms it.
• Iron — relevant because TIPA complexes iron, and an iron-loaded lot has less complexing capacity available for the cement phases.

Common Process Problems & Likely Causes

When TIPA misbehaves in a plant, the cause is usually one of a short list of things. This table is the shortcut our technical desk works through before anyone opens a complaint file.

Packaging, Storage & Shipping

• Flake packing. 25 kg net in multi-wall paper bags with a polyethylene liner, or in HDPE-lined fibre drums. Moisture-barrier packaging matters, since TIPA is strongly hygroscopic.
• Solution grade. 85% aqueous solution in 1000 L IBCs and bulk tanks — what most cement additive producers actually buy, because it avoids melting entirely.
• Bulk packing. Heated road tankers and heated ISO tank containers for continuous users.
• Melting and handling. TIPA is solid below about 45 °C. Drum heaters, hot rooms or heated storage are normal, and lines need tracing and lagging. Heat gently and evenly — local overheating darkens the product permanently.
• Materials of construction. Stainless steel or suitable lined vessels. Carbon steel is used in some service but corrodes more readily when the amine is hot or loaded with acid gas. Avoid copper, brass, bronze and aluminium.
• Oxygen exclusion. The ethanolamines oxidise and darken on air contact, particularly when warm. Nitrogen blanketing is standard for colour-sensitive grades and for any heated storage.
• Shelf life. Typically 12 months in unopened original packing under those conditions. Beyond that, re-test rather than assume.
• Transport classification. Triisopropanolamine is generally not classified as dangerous goods for transport, though it may be classified for supply. Confirm against the current SDS for your destination and mode.
• Container loading. Palletised and shrink-wrapped for FCL; LCL consolidation available by volume.

Hazards & Safe Handling

Triisopropanolamine is among the gentler alkanolamines to handle, but it should still be handled by trained personnel under a proper risk assessment. The classifications below are indicative — the current SDS supplied with your consignment is the governing document.

• Dust control. Handling flake generates dust, which is the principal exposure route with this product. Enclosed transfer and local exhaust at charging points are the standard controls, and are a practical argument for the solution grade.
• Hot and molten material. Melting and heated storage introduce thermal burn risk and raise mist exposure. Treat heated handling as a separate operation with its own controls.
• PPE. Chemical-resistant gloves, eye protection and, where flake dust is generated, appropriate respiratory protection.
• Exposure control. Vapour pressure is negligible at ambient, so vapour inhalation is not a meaningful route. Dust, skin and eye contact are what to control.
• Incompatibilities. Strong oxidising agents, strong acids, acid chlorides, and copper, brass, bronze and aluminium equipment.
• Spill response. Collect solid mechanically without raising dust; contain and absorb melted material with inert material. Collect in a labelled closed container. Do not wash to drain.
• Environment. Harmful to aquatic life. Do not allow to enter drains, surface water or groundwater. Dispose through a licensed chemical waste contractor.
• First aid. Remove contaminated clothing, wash skin with plenty of water, flush eyes for at least 15 minutes, and seek medical attention with the SDS to hand if irritation persists.

Regulatory & Compliance Notes

Triisopropanolamine is an established industrial chemical and is listed on the major national chemical inventories. Because obligations differ by territory, volume and use, the notes below are orientation rather than legal advice — confirm your own position with your regulatory adviser before importing.

• Inventory status. Listed on the principal chemical inventories in the major importing regions. Ask us for the inventory confirmation relevant to your destination country.
• Import registration. Several territories require the importer to hold a registration or notification before a consignment lands. Start that process early — it is the most common cause of delay at destination.
• Hazard communication. Supplied with an SDS compliant with the format applicable to your region, and labelled in line with the GHS classification for the product.
• Cement additive declarations. Where TIPA is used in a grinding aid or admixture, the finished product may need declaration or approval under construction product rules at destination, and in some markets grinding aid dosage in cement is itself limited. That attaches to the additive rather than the raw material, but plan the documentation into the project.
• Nitrosamine position. As a tertiary amine with no N-H, TIPA cannot be nitrosated directly, which is one reason formulators select it over secondary alkanolamines. That advantage depends on DIPA carry-over being controlled where the finished product falls under a nitrosamine scheme.
• Transport. Generally not classified as dangerous goods for transport, though it may be classified for supply. Confirm against the current SDS for your destination and mode.

We Supply TIPA Worldwide

Chelora Chemicals is a supplier and export partner, not a single-plant trader. We ship Triisopropanolamine (TIPA) from India to customers across Asia, Europe, the Middle East, Africa, and North and South America, handling the export documentation, dangerous-goods paperwork and freight so the material arrives ready to use.

• Incoterms. EXW, FOB, CIF, CFR and DAP quoted to suit your purchasing terms and freight arrangements.
• Ports. Regular shipments through Nhava Sheva (JNPT) and Mundra, with other Indian ports arranged where it suits the routing.
• Documentation. Commercial invoice, packing list, certificate of origin, COA, SDS and dangerous-goods declaration issued as a complete set.
• Flexible volumes. A single drum for laboratory qualification, through LCL consolidations, up to repeat full loads on a supply contract.
• Supply continuity. Because we are independent of any one producer, a plant turnaround or a shipping disruption at one source does not have to become your stock-out.

Buying TIPA from Chelora

We are an independent sourcing and supply partner. For TIPA that means treating consistency as the product. At the dosages used in cement, a producer cannot distinguish a quality shift from a clinker variation until the 28-day results arrive — so documented batch-to-batch consistency is worth more here than a marginally better headline assay.

• Documentation on every lot. Batch-specific COA including amine value and full distribution, current SDS and TDS.
• Both forms. Flake and 85% aqueous solution, matched to how your plant handles material.
• Samples before commitment. Trial quantities for mill or formulation trials ahead of a commercial order.
• Quantities. From a single 25 kg bag through to heated bulk tank loads on contract supply.
• Export experience. Full documentation, packing and labelling handled for sea and road freight to any destination.
• Related intermediates. TEA, MIPA, DIPA, MEA and the wider cement additive amine range from one supplier.

How ordering works

• Send the enquiry. Product, grade or specification, quantity, destination port and the Incoterm you buy on. If you have a spec sheet, attach it — it saves a round trip.
• We quote. Price, lead time, packing and a sample COA, normally within one working day.
• Sample and qualify. For first orders or critical applications, we send a trial quantity so your lab can sign off before you commit.
• Confirm the order. Proforma invoice issued; payment terms agreed against the volume and the relationship.
• Production and QC. Material allocated and released against a batch-specific COA, with a pre-shipment sample where the application calls for it.
• Ship and document. Packed, labelled and loaded with the full export and dangerous-goods document set, and tracked through to arrival.

Related Alkanolamines & Cement Additives

Buyers of TIPA usually source several of these alongside it — cement grinding aid packages in particular rarely use one alkanolamine alone. Consolidating them on one order cuts freight cost and gives you a single point of contact for documentation.