The IUPAC name of Tetrabutylphosphonium bromide is tetrabutylphosphanium bromide. With the CAS registry number 3115-68-2, it is also named as Phosphonium, tetrabutyl-, bromide. The product's categories are Phosphonium Salts; Quaternary phosphonium salts; Ammonium, Phosphonium, Sulfonium Salts (Ionic Liquids); Ionic Liquids; Phosphonium Compounds; Synthetic Organic Chemistry; Phosphonium Salts; Greener Alternatives: Catalysis; Phase Transfer Catalysts, and the other registry number is 34283-24-4. Besides, it is white to cream crystalline powder, which should be closed in a cool and dry place. In addition, it is soluble in methanol, acetone, toluene.

The other characteristics of this product can be summarized as: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 1; (3)Rotatable Bond Count: 12; (4)Exact Mass: 338.1738; (5)MonoIsotopic Mass: 338.1738; (6)Topological Polar Surface Area: 0; (7)Heavy Atom Count: 18; (8)Formal Charge: 0; (9)Complexity: 116; (10)Melting point: 99-104 °C; (11)Flash point: 290 °C; (12)Water solubility: 70 g/100 mL; (13)EINECS: 221-487-8.

Uses of Tetrabutylphosphonium bromide: it can react with 2-Methylsulfanyl-5,6,7,8-tetrahydro-4H-[1,2,4]triazolo[5,1-b]quinazolin-9-one to get Tetrabutyl-phosphonium; 2-methylsulfanyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[5,1-b]quinazolin-9-olate.



This reaction needs aq. NaOH and CHCl₃ at temperature of 20 °C for 5 min. The yield is 93 %.

When you are using this chemical, please be cautious about it as the following: it is harmful by inhalation, in contact with skin and if swallowed and toxic in contact with skin. And it is also irritating to eyes, respiratory system and skin. You should wear suitable protective clothing, gloves and eye/face protection when use it. After contact with skin, wash immediately with plenty of soap-suds. Moreover, in case of contact with eyes, rinse immediately with plenty of water and seek medical advice. And in case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

People can use the following data to convert to the molecule structure.
(1)SMILES:[Br-].CCCC[P+](CCCC)(CCCC)CCCC
(2)InChI:InChI=1/C16H36P.BrH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H/q+1;/p-1
(3)InChIKey:RKHXQBLJXBGEKF-REWHXWOFAQ
(4)Std. InChI:InChI=1S/C16H36P.BrH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;/h5-16H2,1-4H3;1H/q+1;/p-1
(5)Std. InChIKey:RKHXQBLJXBGEKF-UHFFFAOYSA-M

The toxicity data is as follows: