Model CAS 98-54-4 -Para Tertiary Butyl Phenol (PTBP)

Appearance: White crystalline solid

Odour: Distinct Phenolic odour

Chemical formula: C10H14O

Molar mass: 150.221 g·mol−1

Density: 0.908 g/cm3 (20 °C)

Melting point:    100 °C (212 °F; 373 K)

Boiling point: 237 °C (459 °F; 510 K)

Solubility in water:  0.6 g/L (20 °C

PTBP chemical is usually prepared by the reaction of phenols and isobutylene. It is prepared by incorporating a gaseous of isomer butenes into phenols in the presence of an acid-activated clay as a catalyst. In the process of manufacturing 4-tert, butyl phenols from isobutene and phenols there involve a reaction of the liquid form of phenol with an acid-activated catalyst. Another commonly used method of preparation of PTBP chemicals is by using phenol and tert-butanol in water.

The major application of CAS 98-58-4 is the production of epoxy, polycarbonate resins and curing agents. The chemical is also used in the production of phenolic resins. Another application of this compound is in the production of para-tertiary 

butyl phenol-formaldehyde resin. 4-tertiary butyl phenol is monofunctional and hence in polymer science terms, PTBP chemical is a chain stopper sometimes also called end capper.

 The PTBP chemical has an OH group and hence, it may be reacted with epichlorohydrin and caustic soda to produce the glycidyl ether which can be used in epoxy resin chemistry. PTBP chemical has also found its use as a plasticizer

Para-tert butyl phenol is often used as an intermediate in the production of perfumery ingredients PTBCHA ( para-tert-Butyl Cyclohexyl Acetate) and PTBCH. Para-tert butyl phenol is used as a raw material in the making of printing ink resins, coating resins, wood laminate resins, wire enamels, adhesives and insulating varnishes. It is also used as a molecular weight modifier in the manufacture of polycarbonates.