Refining of tall oil pitch | Zendy

Erä V. | Zendy; Noronen K. | Zendy; Holmbom B. | Zendy

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Refining of tall oil pitch

Author(s) -

Erä V.,

Noronen K.,

Holmbom B.

Publication year - 1979

Publication title -

journal of the american oil chemists' society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.512

H-Index - 117

eISSN - 1558-9331

pISSN - 0003-021X

DOI - 10.1007/bf02674150

Subject(s) - unsaponifiable , chemistry , hexane , chromatography , fraction (chemistry) , adsorption , extraction (chemistry) , refining (metallurgy) , sterol , composition (language) , organic chemistry , cholesterol , biochemistry , linguistics , philosophy

Six grades of tall oil pitch (TOP) were subjected to extraction by n‐hexane and subsequent adsorption by SiO 2 ‐activated carbon blend. Treated pitch samples contained 32.9–48.4% free acids, 24.2–35.0% esterified acids, and 25.0–36% unsaponifiable neutral compounds. Each of the above fractions was analyzed by high resolution gas chromatography. The portion insoluble in n‐hexane contained 83.9% free acids, 10.6% esterified acids, and 5.5% unsaponifiable neutral compounds, indicating enrichment of the acidic compounds in this fraction. The decolorizing effect was observed in all treated TOP grades.

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