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Tetramethylammonium hydroxide

Tetramethylammonium hydroxide
Tetramethylammonium hydroxide structure
CAS No.
75-59-2
Chemical Name:
Tetramethylammonium hydroxide
Synonyms
TMAH;nmd3;nmw-w;TMNOH;ocg945;AZ-726;TRITONNE;Developer;AR-300-49;AZ-300MIF
CBNumber:
CB2854236
Molecular Formula:
C4H13NO
Formula Weight:
91.15
MOL File:
75-59-2.mol

Tetramethylammonium hydroxide Properties

Melting point:
°C
Boiling point:
110 °C
Density 
0.866 g/mL at 25 °C
vapor pressure 
17.5 mm Hg ( 20 °C)
refractive index 
n20/D 1.384
Flash point:
80 °F
storage temp. 
2-8°C
form 
Solution
color 
APHA: ≤10
PH
>13 (H2O, 20°C)
Water Solubility 
Soluble in water.
Sensitive 
Air Sensitive
Merck 
14,9224
BRN 
3558708
Stability:
Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.
InChIKey
WGTYBPLFGIVFAS-UHFFFAOYSA-M
CAS DataBase Reference
75-59-2(CAS DataBase Reference)
EPA Substance Registry System
Methanaminium, N,N,N-trimethyl-, hydroxide(75-59-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  C,T,F,T+,Xn
Risk Statements  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
Safety Statements  45-36/37/39-26-16-36/37-28
RIDADR  UN 3286 3/PG 2
WGK Germany  1
RTECS  PA0875000
4.4-10-34
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29239000
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H310 Fatal in contact with skin Acute toxicity,dermal Category 1, 2 Danger P262, P264, P270, P280, P302+P350,P310, P322, P361, P363, P405, P501
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P302+P350 IF ON SKIN: Gently wash with plenty of soap and water.
P303+P361+P353 IF ON SKIN (or hair): Remove/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. Continuerinsing.
P405 Store locked up.

Tetramethylammonium hydroxide price More Price(37)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 328251 Tetramethylammonium hydroxide solution 10 wt. % in H2O 75-59-2 250ml $52.7 2018-11-13 Buy
Sigma-Aldrich 328251 Tetramethylammonium hydroxide solution 10 wt. % in H2O 75-59-2 1l $153 2018-11-13 Buy
TCI Chemical T0138 Tetramethylammonium Hydroxide (10% in Water) 75-59-2 25mL $16 2018-11-22 Buy
TCI Chemical T0138 Tetramethylammonium Hydroxide (10% in Water) 75-59-2 100mL $30 2018-11-22 Buy
Alfa Aesar 020932 Tetramethylammonium hydroxide, 25% w/w aq. soln., Electronic Grade 99.9999% (metals basis) 75-59-2 250ml $38.3 2018-11-20 Buy

Tetramethylammonium hydroxide Chemical Properties,Uses,Production

Chemical Properties

colourless to yellow liquid

Hazard

Strong irritant to skin and tissue.

Safety Profile

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.

Purification Methods

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.]

Description

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.

Uses

Industry Application Role/benefit
Organic silicon Production of dimethyl silicone oil, organic silicon resin, silicon rubber, etc. Catalyst/removed easily; no pollution to the products
Chemical analysis Polarography experiment Polarographic reagent
Thermochemolysis to study fungal degradation of wood Analytical reagent
Chemical purification Removal of metal elements Ash free alkali/source of base; make the metal elements precipitated
Electron Production of computer silicon chip Brightening agent; anisotropic etching agent; cleaning agent; photoresist developer
Printing of circuit board Cleaning agent
Semiconductor manufacturing Chemical stripper
Others Synthesis of ferrofluid Surfactant/ inhibit nanoparticle aggregation
Synthesis of zeolite Structure directing agent
 

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.

Fire Hazard

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.

Reactivity Profile

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.

References

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.chemicalbook.com/ChemicalProductProperty_EN_CB2854236.htm

Tetramethylammonium hydroxide Preparation Products And Raw materials

Raw materials

Preparation Products


Tetramethylammonium hydroxide Suppliers

Global( 213)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22043 58
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0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20786 55
Mainchem Co., Ltd.
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+86-0592-6210733 sales@mainchem.com CHINA 32651 55
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24118 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254
peter@hubeijusheng.com CHINA 20243 58
career henan chemical co
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Wuhan Kemi-Works Chemical Co., Ltd 86-27-85736489
86-27-85736485 info@kemiworks.net; sales@kemiworks.com China 547 57
Shanghai Aladdin Bio-Chem Technology Co.,LTD 021-20337333/400-620-6333
021-50323701 sale@aladdin-e.com China 25106 65
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
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Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40395 62

View Lastest Price from Tetramethylammonium hydroxide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-04-04 Tetramethylammonium hydroxide
75-59-2
US $6.00 / kg 1kg High quality Professional Factory Ms Ella chemwill_asia@126.com www.chemwill.com Chemwill Asia Co.,Ltd.
2018-12-21 Tetramethylammonium hydroxide
75-59-2
US $1.00 / kg 1g 99% 100KG career henan chemical co

Tetramethylammonium hydroxide Spectrum


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