Tetramethylammonium hydroxide pentahydrate (TMAH )
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Post Date:
Aug 26,2017
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Expiry Date:
Aug 26,2018
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Detailed Description:
Cas No. :10424-65-4
Property
It can absorb CO2 in the air rapidly, it forms carbonate which is organic strong Alkali with strong corrosivity, it will be hygroscopic when exposure to air for long time, so it should store with good seal, decomposition temperature is 135 ° C.
Specification
Appearance: White needle-like or crystalline powder
Assay: 98%min
Carbonate:0.5%max
Non-volatile matter:0.1%max
Chloride: 0.05%max
Application
1.In the organic silicones, it is used as the catalyst of Dimethyl silicone oil, benzyl methyl silicon oil, organic silicon diffusion pump oil, solvent-free silicon molding plastics, silicon rubber for organic silicone resin.
Use Tetramethylammonium hydroxide as catalyst, the advantage is when heating after reaction, it can be decomposed into gas, this gas doesn’t remain in the product.
2. In the analysis, it is used as polarographic reagent.
3. In the product’s purification, it is used as ash-free alkali for precipitating lots of metal elements.
4. It is usually used as brightener cleaner and touch cutting agent for computer silicon wafer surface during the production of silicon wafer.
Package:250g/bottle, 10kg/ carton .
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CAS Registry Number:
10424-65-4
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Synonyms:
;Tetramethylammonium hydroxide pentahydrate;N,N,N-trimethylmethanaminium hydroxide;N,N,N-trimethylmethanaminium hydroxide hydrate (1:1:5);
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Molecular Formula:
C4H23NO6
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Molecular Weight:
181.2285
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Molecular Structure:
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Hazard Symbols:
T:Toxic;
C:Corrosive;
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Risk Codes:
R20/21/22:;
R24/25:;
R34:;
R44:;
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Safety Description:
S26:;
S36/37/39:;
S45:;
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