IUPAC Name:   Tetramethylazanium hydroxide pentahydrate 
Synonyms:  Methanaminium N,N,N-trimethyl- hydroxide pentahydrate ; Tetramethyl ammoniumhydroxid pentahydrate ; Tetramethylammonium Hydroxide-D135 D2O ; Tetramethylammonium hydroxide ; Tetramethylammonium hydroxide pentahydrate97% 
The Molecular Formula of  Tetramethylammonium Hydroxide Pentahydrate (CAS NO.10424-65-4):C₄H₂₃NO₆ 
The Molecular Weight of   Tetramethylammonium Hydroxide Pentahydrate (CAS NO.10424-65-4):181.2285 g/mol
The Molecular Structure of   Tetramethylammonium Hydroxide Pentahydrate (CAS NO.10424-65-4):
Melting Point:202-204 ºC
Appearance:moist white crystals with an amine odour
Polarizability: 10^-24cm³ 

   Tetramethylammonium Hydroxide Pentahydrate (CAS NO.10424-65-4) can be used as ganglionic stimulant.

Hazard Codes: T,C
Risk Statements: 23/24/25-34-44-20/21/22
 R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R34:Causes burns. 
R44:Risk of explosion if heated under confinement. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
Safety Statements: 26-36/37/39-45 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
RIDADR: UN 3423 8/PG 2
WGK Germany: 1
RTECS: PA0875000 
F: 3-34 
HazardClass: 8 
PackingGroup: II