The Triphenylvinylphosphonium bromide ,its cas register number is 5044-52-0.It also can be called as Phosphonium,ethenyltriphenyl-, bromide (1:1) and the IUPAC name about this chemicals is Ethenyl(triphenyl)phosphanium bromide .It belongs to the following product categories, such as Phosphonium Compounds, Synthetic Organic Chemistry, Wittig & Horner-Emmons Reaction, Wittig Reaction and so on.

The Triphenylvinylphosphonium bromide is a white to beige fine crystalline powder. It is a dangerous chemical, because it irritating to eyes, respiratory system and skin. In the using process, please be more careful, you need avoid contact with skin and eyes and do not breathe dust.

If you want to store this chemical, please keep containers tightly sealed, and store in cool, dry place in tightly closed containers, also ensure good ventilation/exhaustion at the workplace. There are some first aid measures: (1)Inhalation: supply fresh air, if required, provide artificial respiration and keep patient warm. (2)Skin contact: seek immediate medical advice and instantly wash with water, soap and rinse thoroughly.

There are some first aid measures: After inhalation, please supply fresh air. If required, provide artificial respiration, and keep patient warm, also consult doctor if symptoms persist; After skincontact, please seek immediate medical advice, then instantly wash with water and soap and rinse thoroughly; After eye contact, please seek immediate medical advice, and rinse opened eye for several minutes under running water. Then consult doctor; After swallowing, please seek immediate medical advice.

This chemical can be described computed from structure:
(1)Canonical SMILES: C=C[P+](C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3.[Br-]
(2)InChI: InChI=1S/C20H18P.BrH/c1-2-21(18-12-6-3-7-13-18,19-14-8-4-9-15-19)20-16-10-5-11-17-20;/h2-17H,1H2;1H/q+1;/p-1
(3)InChIKey: VRAYVWUMBAJVGH-UHFFFAOYSA-M