Tetramethylammonium sulfate , with the CAS register number 14190-16-0 , has the systematic name of
bis(N,N,N-trimethylmethanaminium) sulfate . It is also known to us as BIS(TETRAMETHYLAMMONIUM) SULFATE ,tetramethylammonium sulphate (2:1) ,TETRAMETHYLAMMONIUM SULFATE, FOR IPC ,2(Tetramethylammonium)·sulfate;2[Tetramethylammonium]·sulfate;Bistetramethylaminium·sulfuric acid bisanion , and Tetramethylammonium sulphate .

Some characteristics of this kind of chemical are as below: (1)ACD/BCF (pH 5.5):  1  ; (2)ACD/BCF (pH 7.4):  1  ; (3)ACD/KOC (pH 5.5):  1  ; (4)ACD/KOC (pH 7.4):  1  ; (5)#H bond acceptors:  6  ; (6)#H bond donors:  2  ; (7)Polar Surface Area:  88.64.

Being an irritant  chemicals to eyes, respiratory system and skin, it may cause inflammation to the skin or other mucous membranes. So while contacting with this kind of chemical, remember to wear suitable protective clothing. And if in case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, if you need more safety information, you could also refer to the WGK Germany  3.

Its relevant category are as listing: catalyst, quaternary ammonium salt, cationicsurfaceactiveagent, Ammonium Polyhalides ,Quaternary Ammonium Compounds. As for its usage, it could be used in the chemical reagent and intermediate.

You could obtain the molecular structure by converting the below data information:
SMILES: C[N+](C)(C)C.[O-]S([O-])(=O)=O.C[N+](C)(C)C
InChI: InChI=1/2C4H12N.H2O4S/c3*1-5(2,3)4/h2*1-4H3;(H2,1,2,3,4)/q2*+1;/p-2
InChIKey: KJFVITRRNTVAPC-NUQVWONBAZ

As to its market information, there are many suppliers around the world, such as TCI (Shanghai) Development Co., Ltd. with the packing of 25G,5G and Energy Chemical with the packing of 10g,500g,1kg.