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    HomeProductsQuaternary Ammonium HydroxidesTetramethyl Ammonium Hydroxide CAS NO.75-59-2 TMAH TMAOH

    Tetramethyl Ammonium Hydroxide CAS NO.75-59-2 TMAH TMAOH

    Description

    Tetramethyl Ammonium Hydroxide CAS NO. 75-59-2, simply called TMAH or TMAOH. Assay 25% in Water (Industrial Grade & Electronic Grade), 25% in Methanol or 98%min Pentahyrate. Easy to absorb Carbon Dioxide, strongly alkaline, highly corrosive. Widely used in many fields, as the most common Quaternary Ammonium Hydroxide. 25% in Water made by electrolysis with starting materials Trimethylamine and Dimethyl Carbonate. 25% in Methanol made by synthesis with starting materials Tetramethylammonium Chloride. 98% Pentahydrate made by concentrated crystallization after electrolysis.

    • CAS NO.: 75-59-2/10424-65-4
    • Molecular Formula: C₄H₁₂NOH
    • Molecular Weight: 91.15
    • Purity (Content): 25% in Water/Methanol or 98% Pentahydrate
    • Appearance: Colorless transparent liquid or White Crystal
    • Package: 200KG/drum; 1000KG/IBC drum; 24MT/ISO Tank
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    Details

    Tetramethyl Ammonium Hydroxide CAS NO. 75-59-2 TMAH TMAOH, belongs to Quaternary Ammonium Hydroxide, organic strong alkali compounds, in aqueous solution or Methanol solution or 98% Pentahydrate Crystal. Easy to absorb Carbon Dioxide, strongly alkaline, highly corrosive. Alkali strength is comparable to Sodium Hydroxide and Potassium Hydroxide. Made from Quaternary ammonium salts normally via electrolysis or synthesis.

    Specifications

    • Tetramethyl Ammonium Hydroxide 25% in Water Industrial Grade
    AppearanceColorless transparent liquid
    Color (APHA)≤ 10#
    Assay24.50 ~ 25.50%
    Carbonate300 ppm max.
    Chloride 10 ppm max.
    K 1.0 ppm max.
    Na 1.0 ppm max.
    Ca 1.0 ppm max.
    Mg 1.0 ppm max.
    Fe 1.0 ppm max.
    • Tetramethyl Ammonium Hydroxide 25% in Water Electronic Grade
    AppearanceColorless transparent liquid
    Color (APHA)≤ 5
    Assay (%)24.50 ~ 25.50
    Carbonate100 ppm max
    Chloride100 ppb max
    Methanol40 ppm max.
    Li5 ppb max
    Na5 ppb max
    Mg5 ppb max
    Al5 ppb max
    K5 ppb max
    Ca5 ppb max
    Cr5 ppb max
    Mn5 ppb max
    Fe5 ppb max
    Ni5 ppb max
    Co5 ppb max
    Cu5 ppb max
    Zn5 ppb max
    Mo5 ppb max
    Cd5 ppb max
    Pb5 ppb max
    Ag5 ppb max
    • Tetramethyl Ammonium Hydroxide 25% in Methanol
    AppearanceColorless to light yellow liquid
    Color (APHA)≤ 100#
    Assay25% min.
    Inorganic Alkali2% max.
    • Tetramethyl Ammonium Hydroxide Pentahydrate
    AppearanceWhite Crystal
    Assay98% min.
    Carbonate Salt0.5% max.
    Heavy Metal2 ppm max.

    We can also customize Tetramethyl Ammonium Hydroxide Pentahydrate Electronic Grade with lower Metal contents.

    Application

    • Used in synthesis catalyst as rubber anti-aging agent.
    • Used as catalysts for the polymerization of silicone rubber and other silicone products.
    • Used in wet electronic chemicals.
    • Widely used as developer in electronics and semiconductor industry.
    • Used as phase transfer catalysts in organic synthesis chemistry.
    • Used as electronic cleaning agents and Electronic etchants.

    Package

    TMAH 25% in Water 200KG/plastic drum, 4 drums/pallet, total 16mt in 20’FCL
    1000KG/IBC drum, total 20mt (20 IBCs) in 20’FCL
    24000KG/ISO Tank
    TMAH 25% in Methanol 160KG/plastic drum, 4 drums/pallet, total 12.8mt in 20’FCL
    800KG/IBC drum, total 16mt (20 IBCs) in 20’FCL
    TMAH Pentahydrate 25KG/drum, 18 drums/pallet, total 9mt in 20’FCL or 18mt in 40’FCL

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    Developer TMAH Tetramethyl Ammonium Hydroxide Tetramethyl Ammonium Hydroxide 75-59-2 Tetramethyl Ammonium Hydroxide Pentahydrate TMAOH 75-59-2 TMAOH Pentahydrate 10424-65-4

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