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Tetrabutylammonium hydroxide solution

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1.0 M in methanol

Linear Formula:
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1.0 M in methanol

refractive index

n20/D 1.3775


0.83 g/mL at 25 °C

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General description

Tetrabutylammonium hydroxide is a quaternary ammonium salt mainly used as a strong base and phase-transfer catalyst.
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Tetrabutylammonium hydroxide solution (1M in methanol) may be used as a base to synthesize ring methyl and methylene deuteriated porphyrins and metalloporphyrins. It may also be used as an initiator of graft polymerization between pivalolactone and poly(ethylene-co-vinyl acetate-co-methacrylic acid).


1 L in Sure/Seal™
100, 4×100, 250, 800 mL in Sure/Seal™

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Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 1

Storage Class Code

3 - Flammable liquids

WGK Germany


Flash Point(F)

51.8 °F - closed cup

Flash Point(C)

11 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Rapid base-catalyzed deuterium exchange at the ring-adjacent methyl and methylene positions of octaalkyl and natural-derivative porphyrins and metalloporphyrins.
Godziela GM, et al.
Inorganic Chemistry, 25(23), 4286-4288 (1986)
Tetrabutylammonium Hydroxide
Bos ME
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2001)
Block and Graft Copolymers of Pivalolactone. 3. Grafts on Ethylene Copolymers
Sundet SA
Macromolecules, 11(1), 146-149 (1978)
Construction of 3, 5-substituted 1, 2, 4-oxadiazole rings triggered by tetrabutylammonium hydroxide: a highly efficient and fluoride-free ring closure reaction of O-acylamidoximes.
Otaka H, et al.
Tetrahedron Letters, 55(5), 979-981 (2014)
B B Y Lau et al.
Bioresource technology, 197, 252-259 (2015-09-08)
Aqueous solutions of tetrabutylphosphonium hydroxide have been evaluated as pretreatment media for rice husks, prior to sulphuric acid hydrolysis or cellulase enzymatic hydrolysis. Varying the water:tetrabutylphosphonium hydroxide ratio varied the rate of delignification, as well as silica, lignin and cellulose...

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