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Tetramethylammoniumhydroxid

Tetramethylammonium hydroxide Struktur
75-59-2
CAS-Nr.
75-59-2
Bezeichnung:
Tetramethylammoniumhydroxid
Englisch Name:
Tetramethylammonium hydroxide
Synonyma:
TMAH;TetramethyL;Developer;N,N,N-TRIMETHYLMETHANAMINIUM HYDROXIDE;TETRAMETHYLAMMONIUM HYDROXIDE SOL., 6% IN PROPYLENEGLYCOL;nmd3;nmw-w;TMNOH;ocg945;AZ-726
CBNumber:
CB2854236
Summenformel:
C4H13NO
Molgewicht:
91.15
MOL-Datei:
75-59-2.mol

Tetramethylammoniumhydroxid Eigenschaften

Schmelzpunkt:
°C
Siedepunkt:
110 °C
Dichte
0.866 g/mL at 25 °C
Dampfdruck
17.5 mm Hg ( 20 °C)
Brechungsindex
n20/D 1.384
Flammpunkt:
80 °F
storage temp. 
Store below +30°C.
L?slichkeit
Methanol (Sparingly), Water (Slightly)
Aggregatzustand
Solution
Farbe
APHA: ≤10
PH
>13 (H2O, 20°C)
Geruch (Odor)
strong ammonia-like odor
Wasserl?slichkeit
Soluble in water.
Sensitive 
Air Sensitive
Merck 
14,9224
BRN 
3558708
Stabilit?t:
Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.
InChIKey
WGTYBPLFGIVFAS-UHFFFAOYSA-M
CAS Datenbank
75-59-2(CAS DataBase Reference)
EPA chemische Informationen
Tetramethylammonium hydroxide (75-59-2)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher C,T,F,T+,Xn
R-S?tze: 24/25-34-20/21/22-39/23/24/25-23/24/25-10-21/22-25-21-11-67-36-52-48/24-27/28-23-35-36/38
S-S?tze: 45-36/37/39-26-16-36/37-28
RIDADR  UN 3286 3/PG 2
WGK Germany  1
RTECS-Nr. PA0875000
4.4-10-34
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29239000
Giftige Stoffe Daten 75-59-2(Hazardous Substances Data)
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H226 Flüssigkeit und Dampf entzündbar. Entzündbare Flüssigkeiten Kategorie 3 Warnung
H314 Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. ?tzwirkung auf die Haut Kategorie 1B Achtung GHS hazard pictogramssrc="/GHS05.jpg" width="20" height="20" /> P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H331 Giftig bei Einatmen. Akute Toxizit?t inhalativ Kategorie 3 Achtung GHS hazard pictogramssrc="/GHS06.jpg" width="20" height="20" /> P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H370 Sch?digt die Organe. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 1 Achtung GHS hazard pictogramssrc="/GHS08.jpg" width="20" height="20" /> P260, P264, P270, P307+P311, P321,P405, P501
H372 Sch?digt bei Hautkontakt und Verschlucken die Organe bei l?ngerer oder wiederholter Exposition. Spezifische Zielorgan-Toxizit?t (wiederholte Exposition) Kategorie 1 Achtung GHS hazard pictogramssrc="/GHS08.jpg" width="20" height="20" /> P260, P264, P270, P314, P501
H412 Sch?dlich für Wasserorganismen, mit langfristiger Wirkung. Langfristig (chronisch) gew?ssergef?hrdend Kategorie 3 P273, P501
Sicherheit
P210 Von Hitze, hei?en Oberfl?chen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P273 Freisetzung in die Umwelt vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P303+P361+P353 BEI BERüHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

Tetramethylammoniumhydroxid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R24/25:Giftig bei Berührung mit der Haut und beim Verschlucken.
R34:Verursacht Ver?tzungen.
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R10:Entzündlich.
R21/22:Gesundheitssch?dlich bei Berührung mit der Haut und beim Verschlucken.
R25:Giftig beim Verschlucken.
R21:Gesundheitssch?dlich bei Berührung mit der Haut.
R11:Leichtentzündlich.
R67:D?mpfe k?nnen Schl?frigkeit und Benommenheit verursachen.
R36:Reizt die Augen.

S-S?tze Betriebsanweisung:

S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.

Beschreibung

Tetramethylammonium hydroxide is a solid in the hydrated form or a colorless liquid with a strong ammonia-like odor. It is soluble in water, and corrosive to metals and tissue.

Chemische Eigenschaften

colourless to yellow liquid

Verwenden

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.

Allgemeine Beschreibung

Tetramethylammonium hydroxide is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate.

Reaktivit?t anzeigen

Tetramethylammonium hydroxide acts like a base. Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). They neutralize acids exothermically to form salts plus water. When soluble in water they give solutions having a pH greater than 7.0. Mixing these materials with water can generate troublesome amounts of heat as the base is dissolved or diluted. Bases react with certain metals (such as aluminum and zinc) to form oxides or hydroxides of the metal and generate gaseous hydrogen. Bases may initiate polymerization reactions in polymerizable organic compounds, especially epoxides). They may generate flammable and/or toxic gases with ammonium salts, nitrides, halogenated organics, various metals, peroxides, and hydroperoxides. Materials of this group often serve as catalysts.

Hazard

Strong irritant to skin and tissue.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Brandgefahr

Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

Sicherheitsprofil

Poison by subcutaneous route. A powerful caustic. A corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of NOx and NH3.

l?uterung methode

It is freed from chloride ions by passage through an ion-exchange column (e.g. Amberlite IRA-400, prepared in its OH-form by passing 2M NaOH until the effluent is free from chloride ions, then washed with distilled H2O until neutral). A modification, to obtain carbonate-free hydroxide, uses the method of Davies and Nancollas [Nature 165 237 1950]. [Beilstein 4 IV 145.]

Einzelnachweise

1.https://en.wikipedia.org/wiki/Tetramethylammonium_hydroxide#Uses
2.http://sacheminc.com/other-chemicals/tetramethylammonium-hydroxide-tmah/
3.https://www.fs.usda.gov/treesearch/pubs/15506
4.https://www.concordia.ca/content/dam/concordia/services/safety/docs/EHS-DOC-020_TMAHGuidelines.pdf
5.http://www.is0513.com/ChemicalProductProperty_EN_CB2854236.htm

Tetramethylammoniumhydroxid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Tetramethylammoniumhydroxid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

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75-59-2(Tetramethylammoniumhydroxid)Verwandte Suche:


  • TETRAMETHYLAMMONIUM HYDROXIDE
  • Tetramethylammoniumhydroxide,25%soln.inmethanol
  • Tetramethylammoniumhydroxide,25%w/wAqueousSolution,99.5%(metalsbasis)
  • TETRAMETHYLAMMONIUM HYDROXIDEOL
  • Tetramethylammonium hydroxide, 10% in water
  • Tetramethylammonium hydroxide, 25 wt% in methanol
  • Tetramethylammonium hydroxide, 25% in water
  • TETRAMETHYLAMMONIUM HYDROXIDE, SOLUTION 1.0 Mol/L in WATER, REAGENT (ACS)
  • TETRAMETHYLAMMONIUM HYDROXIDE, SOLUTION 25% in METHANOL
  • TETRAMETHYLAMMONIUMION
  • TRITONNE
  • Tetramethylammoniumhydroxid (25%ige wssrige Lsung)
  • TETRAMETHYLAMMONIUM HYDROXIDE: 25% AQUEOUS SOLUTION
  • TETRAMETHYLAMMONIUM HYDROXIDE, 25% SOLUTION, SEMICONDUCTOR GRADE
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION IN METHANOL 25%
  • Tetramethylammonium hydroxide, 25 wt. % in water
  • Tetramethylammonium hydroxide, 25% w/w in methanol
  • Tetramethylammonium hydroxide, 25% w/w aq. soln., Electronic Grade, 99.9999% (metals basis)
  • Tetramethylammonium Hydroxide (10% in Methanol)
  • Tetramethylammonium Hydroxide (10% in Methanol) [for Photoresist Research]
  • Tetramethylammonium Hydroxide (ca. 25% in Water)
  • TETRAMETHYLAMMONIUM HYDROXIDE 25% in methanol pure
  • TETRAMETHYLAMMONIUM HYDROXIDE 0.1N in isopropanol/methanol extrapure
  • TETRAMETHYLAMMONIUM HYDROXIDE 10% aqueous solution pure
  • Tetramethylammonium hydroxide, 2.38% w/w aq. soln., Electronic Grade, 99.9999% (metals basis)
  • 25% AQUEOUS SOLUTION
  • Tetramethylammonium hydroxide, 25% w/w aq. soln.
  • TetraMethylaMMoniuM Hydroxide Solution, 25 wt. % in H2O
  • tetraMethylazaniuM oxidanide
  • TetraMethylaMMoniuM hydroxide ,0% [25% solution in water]
  • TetraMethylaMMoniuM hydroxide, 10% in water 100GR
  • Tetramethylammonium hydroxide, 10% w/w Aq. Soln, Electronic Grade, 99.9999% (metals basis)
  • TetraMethylaMMoniuM Hydroxide 20% in Water
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION 1
  • TetraMethylaMMoniuM hydroxide, aqueous solution (TMAH)
  • hydroxydedetetramethylammonium
  • megapositcd14
  • Methanaminium,N,N,N-trimethyl-,hydroxide
  • n,n,n-trimethyl-methanaminiuhydroxide
  • TETRAME-AMMONIUMHYDROXIDE/H20
  • Tetramethyl ammonium
  • Tetramethylaminonium hydroxide
  • TETRAMETHYLAMMONIUM HYDROXIDE, 10 WT. % SOLUTION IN WATER
  • TETRAMETHYLAMMONIUM HYDROXIDE, 1.0M SOLN . IN H2O, A.C.S. REAGENT
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION, ~10% IN WATER
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION, ~25% IN WATER
  • Tetramethylammonium hydroxide solution 25 %
  • TETRAMETHYLAMMONIUM HYDROXIDE CONC., FOR IPC, PGE W. 6 VIALS
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION, ~1 M IN WATER
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION, ~10% IN METHANOL
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION S
  • TETRAMETHYLAMMONIUM HYDROXIDE SOL, ~25% IN METHANOL (~2.2 M)
  • 0,1 MOL TETRAMETHYLAMMONIUM HYDROXIDE FI XANAL
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION, ~1.0 M IN WATER
  • TETRAMETHYLAMMONIUM HYDROXIDE SOLUTION 0 ,1 MOL/L IN 2-PROPANOL/ METHANOL
  • TETRAMETHYLAMMONIUM HYDROXIDE, 25 WT. % SOLUTION IN METHANOL
  • TETRAMETHYLAMMONIUM BROMIDE 98+% &
  • TETRAMETHYLAMMONIUM HYDROXIDE 25% (W/W) SOLUTION IN
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