75-59-2
Product Name:
Tetramethylammonium hydroxide
Formula:
C4H13NO
Synonyms:
TMAH solution
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical 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. It is corrosive to metals and tissue. |
|---|---|
| Color/Form | The free base is known only in solution or as a solid pentahydrate, forming colorless, deliquescent needles |
| Odor | Strong ammonia-like |
| Melting Point | 63 °C |
| Density | Specific gravity of solution approximately 1.00 at 24 °C/4 °C |
| Stability/Shelf Life | Stable under recommended storage conditions. /Tetramethylammonium hydroxide pentahydrate/ |
| Decomposition | When heated to decomposition it emits toxic fumes of /nitrogen oxides and ammonia/. |
| Corrosivity | Corrosive |
| Other Experimental Properties | Decomposes to trimethylamine and methanol upon distillation |
| Chemical Classes | Other Classes -> Bases |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H226:Flammable liquids H314:Skin corrosion/irritation H331:Acute toxicity,inhalation H370:Specific target organ toxicity, single exposure H372:Specific target organ toxicity, repeated exposure H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. 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. |
COMPUTED DESCRIPTORS
| Molecular Weight | 91.15 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 91.099714038 g/mol |
| Monoisotopic Mass | 91.099714038 g/mol |
| Topological Polar Surface Area | 1 Ų |
| Heavy Atom Count | 6 |
| Formal Charge | 0 |
| Complexity | 19.1 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 2 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
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. It is corrosive to metals and tissue.