Tetramethylammonium hydroxide, 25% w/w aq. soln., Electronic Grade, 99.9999% (metals basis), Thermo Scientific Chemicals

Product Code	Brand	Quantity
11347987	Thermo Scientific Alfa Aesar 020932.AK	250 mL
11357987	Thermo Scientific Alfa Aesar 020932.K2	1 L

Description

Tetramethylammonium hydroxide is used to produce tetramethyl-ammonium azide. It is used as an anisotropic etchant of silicon, 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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

• CAS: 75-59-2
• Molecular Weight (g/mol): 91.154
• InChI Key: WGTYBPLFGIVFAS-UHFFFAOYSA-M
• PubChem CID: 60966
• SMILES: C[N+](C)(C)C.[OH-]

• Molecular Formula: C4H13NO
• MDL Number: MFCD00008280
• Synonym: tetramethylammonium hydroxide, tmah, hydroxyde de tetramethylammonium, nmw-w, nmd 3, tetramethyl ammonium hydroxide, unii-5gkp7317q2, ammonium, tetramethyl-, hydroxide, methanaminium, n,n,n-trimethyl-, hydroxide, tetramethylammoniumhydroxide
• IUPAC Name: tetramethylazanium;hydroxide

Specifications

• CAS: 75-59-2
• Density: 1.016 g/mL
• Molecular Formula: C4H13NO
• Refractive Index: 1.384
• UN Number: UN1835
• Sensitivity: Air Sensitive
• Synonym: tetramethylammonium hydroxide, tmah, hydroxyde de tetramethylammonium, nmw-w, nmd 3, tetramethyl ammonium hydroxide, unii-5gkp7317q2, ammonium, tetramethyl-, hydroxide, methanaminium, n,n,n-trimethyl-, hydroxide, tetramethylammoniumhydroxide
• InChI Key: WGTYBPLFGIVFAS-UHFFFAOYSA-M
• IUPAC Name: tetramethylazanium;hydroxide
• PubChem CID: 60966
• Percent Purity: 99.9999%
• Concentration or Composition (by Analyte or Components): 25% w/w aq. soln.
• Assay: (metals basis)

• Color: Colorless to Yellow
• Boiling Point: ∼102°C
• Linear Formula: (CH₃)₄NOH
• MDL Number: MFCD00008280
• Beilstein: 3558708
• Merck Index: 14,9224
• Solubility Information: Miscible with water.
• SMILES: C[N+](C)(C)C.[OH-]
• Molecular Weight (g/mol): 91.154
• Formula Weight: 91.15
• Grade: Electronic
• Physical Form: Liquid
• Chemical Name or Material: Tetramethylammonium hydroxide

Safety and Handling

GHS H Statement
H300-H310-H370-H372-H314
Fatal if swallowed.
Fatal in contact with skin.
Causes damage to organs.
Causes damage to organs through prolonged or repeated exposure.
Causes severe skin burns and eye damage.

P260-P264b-P270-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P501c

H301-H310-H314-H370-H372

missing translation for 'dotInformation' : Transport Hazard Class: 8; Packing Group: II; Proper Shipping Name: TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION

missing translation for 'einecsNumber' : 200-882-9

missing translation for 'rtecsNumber' : PA0875000

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures; Store under Nitrogen

Product Identifier

• Tetramethylammonium hydroxide, 25% w/w aqueous soluion, Electronic Grade

Signal Word

• Danger

Hazard Category

• Acute toxicity Category 2
• Specific target organ toxicity after single exposure Category 1
• Specific target organ toxicity Category 1
• Skin corrosion/irritation Category 1 B
• Serious eye damage/eye irritation Category 1
• LONG-TERM AQUATIC HAZARD Chronic 2

Hazard Statement

• H300 + H310-Fatal if swallowed or in contact with skin.
• H314-Causes severe skin burns and eye damage.
• H370-Causes damage to organs.
• H411-Toxic to aquatic life with long lasting effects.

Precautionary Statement

• P260-Do not breathe dust/fume/gas/mist/vapours/spray.
• P301+P310-IF SWALLOWED: Immediately call a POISON CENTER/doctor /
• P303+P361+P353-IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/ shower.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P405-Store locked up.
• P501-Dispose of contents/container to in accordance with local/regional/national/international regulations..

RUO – Research Use Only