Tetrabutylammonium Hydroxide

Tetrabutylammonium Hydroxide

CAS No.: 2052-49-5
Molecular Formula: C16H37NO
Molecular Weight: 259.47
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product description
At room temperature, it is a white crystalline powder with a fine crystal structure. It is hygroscopic and readily deliquesces into a paste when exposed to air. Due to the extremely strong hygroscopicity of pure products, they are mostly supplied in the form of aqueous solutions or alcohol solutions (such as methanol and ethanol solutions) in industry, with concentrations typically ranging from 10% to 50%.


Chemical Properties

PropertyValue

Melting Point

27-30 °C(lit.)

Boiling Point

100 °C

Density

0.995

Vapor Density

1 (vs air)

Vapor Pressure

2.3 kPa (@ 20°C)

Refractive Index

1.4

Fp

7°C

Storage Temp.

Store below +30°C.

Solubility

Miscible with organic solvents.

Form

Solution

Color

APHA: ≤30

Specific Gravity

0.8586

Odor

Odorless

PH

14 (20°C in H2O)

PH Range

14

Explosive limit

5.5-36.5% (v/v) Methanol)

Water Solubility

Soluble in water, methanol.

Sensitive

Air Sensitive/Hygroscopic

BRN

3571228

Exposure limits

ACGIH: TWA 200 ppm; STEL 250 ppm (Skin)OSHA: TWA 200 ppm(260 mg/m3)NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3)

Stability:

Volatile

InChIKey

VDZOOKBUILJEDG-UHFFFAOYSA-M

LogP

1.517 at 25℃

CAS DataBase Reference

2052-49-5(CAS DataBase Reference)

EPA Substance Registry System

1-Butanaminium, N,N,N-tributyl-, hydroxide (2052-49-5)


Safety Information

PropertyValue
Hazard SymbolsC, T, F, Xn
Hazard Class Codes34-36/38-23/24/25-11-67-39/23/24/25-36-65-63-38-48/20-35-20/21/22-10-68/20/21/22
Safety Descriptions7-16-26-36/37/39-45-36/37-62-27
UN Dangerous Goods NumberUN 3267 8/PG 2
WGK Germany1
RTECS NumberBS5425000
F9-34
Hazard NoteHighly Flammable / Toxic / Corrosive / Air Sensitive / Hygroscopic
TSCATSCA listed
Hazard Class3
Packing groupII
HS Code29239000
Storage Class8A - Combustible, corrosive substances
Hazard Class (category)Serious damage, Category 1
Skin corrosion, Category 1


Product Usage
Tetrabutylammonium Hydroxide is a strong alkaline quaternary ammonium salt, appearing as a colorless and transparent liquid. It is easily soluble in water and ethanol, with strong alkalinity, good solubility and phase transfer catalytic performance, and no obvious irritation. Its core application is in the field of organic synthesis, serving as a phase transfer catalyst to accelerate the reaction between aqueous and organic phases, improving reaction efficiency and product purity. It can also be used as an alkaline catalyst for drug synthesis and spice preparation. In addition, it is used in the synthesis of organosilicon materials, acid-base titration analysis, and cleaning in the semiconductor industry, being an essential key raw material in fine chemical, pharmaceutical and electronic fields.

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Inventory 2-3 working days New manufacturing 7-10 working days

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1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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