Tetramethylammonium Hydroxide (TMAH) CAS 75-59-2 (25% Aqueous Solution)

Short Description:

Tetramethylammonium Hydroxide (25% Aqueous Solution)

Synonyms: TMAH

CAS: 75-59-2

Assay: 24.5~25.5%

Appearance: Colorless Liquid

Quaternary Ammonium Salts, High Quality

Contact: Dr. Alvin Huang

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Product Detail

Product Tags

75-59-2 - Description:

Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of Tetramethylammonium Hydroxide (TMAH) (CAS: 75-59-2) with high quality, commercial production. We can provide Certificate of Analysis (COA), Safety Data Sheet (SDS), worldwide delivery, small and bulk quantities available, strong after-sale service. Welcome to order. Please contact: alvin@ruifuchem.com

75-59-2 - Chemical Properties:

Chemical Name	Tetramethylammonium Hydroxide (25% Aqueous Solution)
Synonyms	TMAH (25% Aqueous Solution); N,N,N-Trimethylmethanaminium Hydroxide
CAS Number	75-59-2
Stock Status	In Stock, Production Scale Up to Tons
Molecular Formula	(CH3)4NOH
Molecular Weight	91.15
Boling Point	110℃
Flash Point	6℃
Density	1.016 (25% aq.)
Refractive Index (N20/D)	1.378~1.384
Water Solubility	Soluble in Water
Odor	Strong Ammonia-Like Odor
Stability	Stable. Flammable. Incompatible with strong oxidizing agents, strong acids
Hazard Warning	Highly Toxic! Flammable Liquid!
Brand	Ruifu Chemical

75-59-2 - Specifications:

Item	Specifications
Appearance	Colorless Liquid
Assay	24.5~25.5% (Assay by Titration)
Chloride	<500ppm
Potassium (K)	<5ppm
Sodium (Na)	<5ppm
Color	<50APHA
Refractive Index n20/D	1.378~1.384
Infrared Spectrum	Conforms to Structure
Test Standard	Enterprise Standard

Package & Storage:

Package: 25kg/Drum, or according to customer's requirement.

Storage Condition: Store in sealed containers at cool and dry place; Protect from light and moisture.

Advantages:

FAQ:

75-59-2 - Risk and Safety:

Hazard Symbols T - Toxic
C - Corrosive
Risk Codes
R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed.
R34 - Causes burns
Safety Description
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs UN 1835
WGK Germany 1
RTECS PA0875000
FLUKA BRAND F CODES 4.4-10-34
TSCA Yes
HS Code 2923900090
Hazard Class 3
Packing Group II

75-59-2 - Application:

Tetramethylammonium Hydroxide (TMAH) (CAS: 75-59-2) is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate, basic solvent in the development of acidic photoresist in photolithography process, as surfactant in the synthesis of ferrofluid and as a polarographic reagent. It finds application in the production of organic silicon, where it is used for computer silicon wafer surface brightener and cleaning agent. It is also involved in the purification of some metallic elements.