What is unsaponifiable matters?
Answer / s v l n kumar
Un saponifiable matter (U.S.M) are the higher aliphatic alcohols, sterols, pigments and hydrocarbons. These substances frequently found dissolved in fatty acids (oils) which cannot be saponified by caustic (NaOH/KOH) treatment performed by AOCS method.
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During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.
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