How toxic is TMAH?

TMAH is extremely corrosive to skin, eyes, and mucous membranes and will cause serious burns to eyes, and skin on contact. In addition to causing chemical burns, TMAH can cause systemic neurotoxicity leading to respiratory failure by ganglion block that occurs through skin absorption.

What is TMAH used for?

It is used as a basic solvent in the development of acidic photoresist in the photolithography process, and is highly effective in stripping photoresist. TMAH has some phase transfer catalyst properties, and is used as a surfactant in the synthesis of ferrofluid, to inhibit nanoparticle aggregation.

Is tetramethylammonium hydroxide a surfactant?

TMAH has some phase transfer catalyst properties. It is also used as a surfactant in the synthesis of ferrofluids and to inhibit nanoparticle aggregation. TMAH is one of the most common reagents used in thermochemolysis, an analytical technique involving both pyrolysis and chemical derivatization of analytes.

Is ammonium hydroxide corrosive?

Ammonium hydroxide has a corrosive reaction with galvanized surfaces, copper, brass, bronze, aluminum alloys, mercury, gold and silver. HAZARDOUS DECOMPOSITION PRODUCTS: Ammonia will be liberated if heated. Hydrogen will be released on heating ammonia above 450 oC (842 oF).

What is difference between ammonia and ammonium hydroxide?

Ammonium hydroxide is household ammonia in water. One of their major differences is that ammonia does not have water content while ammonium hydroxide has water. Ammonium hydroxide has water that is why the other terms for it is ammonia with water, ammonia liquor etc.

Is surfactant toxic?

Surfactants can be split into two well-separated classes: toxic and mild. Ionic surfactants can be mild; non-ionic surfactants can be toxic.

Is ammonium hydroxide poisonous?

Ammonium hydroxide is poisonous.

What are the health risks of mercury exposure?

High exposure to inorganic mercury may result in damage to the gastrointestinal tract, the nervous system, and the kidneys. Both inorganic and organic mercury are absorbed through the gastrointestinal tract and affect other systems through this route.

Is methylmercury harmful to humans?

Methylmercury, however, is a powerful neurotoxin, and people exposed to high levels may experience adverse health effects. If you are concerned about your exposure to methylmercury, you should consult your physician.

Is TMAH a hazard?

Physical Hazards When heated to decomposition, TMAH emits toxic fumes of NOx and ammonia. Approvals Approvals A Hazard Control Plan  is recommended for procedures involving TMAH over 5%, and one may be required by EHRS under certain circumstances. Contact EHRS for assistance with your hazard assessment.

What is the most toxic form of mercury?

Organic compounds of mercury such as methylmercury are considered the most toxic forms of the element. Exposures to very small amounts of these compounds in concentrated forms can result in devastating neurological damage and death.