Tetrapropylammonium Hydroxide (10% in Water) TCI T0171

Chemical Identity

CAS No.: 4499-86-9
PubChem: CID 20586·SID 87576165
Formula: C12H29NO
Molecular weight: 203.36 g/mol
Reference databases: ChemSpider·ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: tetrapropylazanium hydroxide
SMILES: CCC[N+](CCC)(CCC)CCC.[OH-]
InChIKey: LPSKDVINWQNWFE-UHFFFAOYSA-M

Rp 955.500,00

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Volume 25mL 100mL

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Tetrapropylammonium Hydroxide (10% in Water) from TCI is an aqueous solution of a quaternary ammonium base. It consists of the tetrapropylammonium cation paired with the hydroxide ion. It is a strong organic base that dissolves completely in water and contains no alkali metal ions. In the laboratory, it is best known as a structure-directing agent in zeolite synthesis. It is also used as a base in organic reactions and as an ion-pair reagent in analytical work, so it covers synthetic, materials, and analytical tasks.

Researchers mainly choose this reagent for the size and shape of the tetrapropylammonium cation. During hydrothermal crystallization, the cation fills the cavities and channels of the forming silicate framework and steers it toward specific topologies. The best-known are MFI-type structures such as ZSM-5, silicalite-1, and titanium silicalite TS-1. Because the solution is free of alkali metals, it gives cleaner synthesis gels without extra metal cations. The 10% aqueous form can also be measured by volume, which is easier than weighing a hygroscopic solid base.

In Indonesia, this solution is widely used in chemical engineering and inorganic chemistry laboratories that study catalysts for vegetable oil processing and biomass conversion. University research groups and institutional laboratories working on porous materials use it to prepare MFI-type zeolites and titanosilicates for catalytic testing. Synthetic and analytical chemistry laboratories also keep it on hand as an alkali-free organic base and as an ion-pair reagent, so one stock reagent can support several kinds of research.

TCI brochures (PDF)

Quaternary Ammonium Salts 2025-11-10 · p. 2
Colloidal Quantum Dot (QD) Research Reagents 2026-05-21 · p. 10

Related TCI products

Zeolite synthesis as a structure-directing agent: the tetrapropylammonium cation fills the framework cavities and channels during hydrothermal crystallization, which directs the formation of MFI-type structures such as ZSM-5.
Preparation of silicalite-1 and titanium silicalite TS-1: the alkali-free solution gives clean synthesis gels, which matters when making pure-silica or titanium-substituted frameworks for catalytic research.
Catalyst research for vegetable oil processing and biomass conversion: Indonesian chemical engineering laboratories use it to make MFI-type porous catalysts that are then studied in these conversion processes.
Strong organic base in synthetic reactions: it dissolves completely in water and contains no alkali metal ions, so it can deprotonate substrates without adding metal cations to the reaction mixture.
Ion-pair reagent in chemical analysis: the quaternary ammonium cation can pair with anionic analytes, which makes the solution useful in analytical methods that rely on ion-pair formation.

Brand	TCI (product code T0171)
CAS number	4499-86-9
Molecular formula	—
Purity	—
Category	Chemistry > Synthetic Reagents > Acids, Bases [Synthetic Reagents]
Pack sizes	as listed on the product page
Physical form	aqueous solution, 10% in water
Storage	keep tightly closed in a cool, well-ventilated place, away from acids

Store Tetrapropylammonium Hydroxide (10% in Water) in its original, tightly closed container in a cool, dry, well-ventilated area. Keep it away from acids and incompatible materials. Because it is a strong base, keep the container sealed when not in use so it does not absorb atmospheric carbon dioxide, which can change the effective concentration over time. Use compatible chemical-resistant containers and avoid leaving the solution in open vessels. Handle it in a fume hood or well-ventilated area, and wear safety goggles, chemical-resistant gloves, and a lab coat. Avoid contact with skin and eyes. If contact occurs, rinse thoroughly with water. Always read the supplier's Safety Data Sheet before use and follow your institution's chemical hygiene and waste disposal procedures.

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