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. :Store below +30°C.
solubility :Methanol (Sparingly), Water (Slightly)
form :Solution
color :APHA: ≤10
PH :>13 (H2O, 20°C)
Odor :strong ammonia-like odor
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 :Tetramethylammonium hydroxide (75-59-2)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning 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 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 H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501 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. 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.