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20932 Tetramethylammonium hydroxide, 25% w/w aq. soln., Electronic Grade, 99.9999% (metals basis)

CAS Number
75-59-2
Synonyms

Stock No. Size Price ($) Quantity Availability
20932-AK 250ml 39.80
20932-K2 1L 120.00
20932-LV 1gal 302.00
20932-LU *4x1gal 1068.00
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Tetramethylammonium hydroxide, 25% w/w aq. soln., Electronic Grade, 99.9999% (metals basis)

MDL
MFCD00008280
EINECS
200-882-9

Chemical Properties

Formula
C4H13NO
Formula Weight
91.15
Form
Liquid
Boiling Point
ca 102°
Density
1.016
Refractive Index
1.3840
Storage & Sensitivity
Air Sensitive. Store under Nitrogen. Ambient temperatures.
Solubility
Miscible with water.

Applications

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.

Notes

Air sensitive. Incompatible with strong oxidizing agents, strong acids, aluminum, alkali metals, strong oxidizing agents, acids, acid chlorides, acid anhydrides and halogens.

Literature References

Whang, L. M.; Hu, T. H.; Liu, P. W. G.; Hung, Y. C.; Fukushima, T.; Wu, Y. J.; Chang, S. H. Molecular analysis of methanogens involved in methanogenic degradation of tetramethylammonium hydroxide in full-scale bioreactors. Appl. Microbiol. Biotechnol. 2015, 99 (3), 1485-1497.

Yin, X.; Li, Z.; Wang, S.; Chu, N.; Yang, J.; Wang, J. Hydrothermal synthesis of hierarchical zeolite T aggregates using tetramethylammonium hydroxide as single template. Microporous Mesoporous Mater. 2015, 201, 247-257.

GHS Hazard and Precautionary Statements

Hazard Statements: H301-H310-H314-H370-H372

Toxic if swallowed. Fatal in contact with skin. Causes severe skin burns and eye damage. Causes damage to organs. Causes damage to organs through prolonged or repeated exposure.

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

Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Merck
14,9224
Beilstein
3558708
Hazard Class
8
Packing Group
II
Harmonized Tariff Code
2923.90
TSCA
Yes
RTECS
PA0875000

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