Alkylphenols physical properties

Of course, the physical properties of alkylphenols are comparable to phenol. The properties are strongly influenced by the type of alkyl substituent and its position on the ring. Alkylphenols, like phenol, are typically soflds at 25°C. Their form is affected by the size and configuration of the alkyl group, its position on the ring, and purity. They appear colorless, or white, to a pale yellow when pure (Table 1). 

Purification. The method used to recover the desired alkylphenol product from the reactor output is highly dependent on the downstream use of the product and the physical properties of the alkylphenol. The downstream uses vary enormously some require no refining of the alkylphenol feedstock others require very high purity materials. Physical property differences affect both the basic type of process used for recovery and the operating conditions used within that process. 

The design of these distillation systems and the operating conditions used depend on the physical properties of the alkylphenols involved and on the product requirements. Essentially all alkylphenol distillation systems operate under vacuum, but the actual pressures maintained vary considerably. Vacuum operation allows reasonable reboder temperatures (200—350°C) so that thermal dealkylation reactions of the alkylphenols are slow. 

Typical physical properties and assays of the commercially most important alkylphenols in terms of worldwide volume were given in Table 1. 

The TRYCOL Ethoxylated Alkylphenols have chemical and physical properties similar to the TRYCOL Ethoxylated Alcohols. They are used as dispersants, solubilizers, coupling agents, wetting agents, leveling agents and dyeing assistants. 

Table 4 Chemical and physical properties of poly-rer-alkylphenol disulfides...

The physical properties and health and safety data for the alkylphenols that are most often used to produce detergents are found in Tables 3.2 and 3.3. 

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