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saponify

American  
[suh-pon-uh-fahy] / səˈpɒn əˌfaɪ /

verb (used with object)

saponified, saponifying
  1. to convert (a fat) into soap by treating with an alkali.

  2. to decompose (any ester), forming the corresponding alcohol and acid or salt.


verb (used without object)

saponified, saponifying
  1. to become converted into soap.

saponify British  
/ səˈpɒnɪˌfaɪ /

verb

  1. to undergo or cause to undergo a process in which a fat is converted into a soap by treatment with alkali

  2. to undergo or cause to undergo a reaction in which an ester is hydrolysed to an acid and an alcohol as a result of treatment with an alkali

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of saponify

1815–25; < Latin sāpōn- (stem of sāpō ) soap + -ify


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Sal soda solution 170 " Water 100 " V First saponify 100 parts house grease and 100 parts ordinary grease and make a run soap.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

But to simplify the operation, he preferred to saponify the fat by means of lime.

From The Mysterious Island by Jules Verne

Cotton-seed oil requires weak lyes for saponification, and, being difficult to saponify alone even with prolonged boiling, is generally mixed with animal fat.

From The Handbook of Soap Manufacture by W. H. Simmons

"This is to saponify the oil," I explained.

From The Water Eater by Winston K. Marks

It does not readily saponify, separates quickly, and it is almost impossible to unite when separated.

From Scientific American Supplement, No. 360, November 25, 1882 by Various

Where large quantities of the oil are saponified care must be exercised as the soap formed suddenly rises or puffs up and may boil over.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

The fat is saponified, grained and boiled on strength, as previously described.

From The Handbook of Soap Manufacture by W. H. Simmons

Example.—1.4367 grammes crude glycerine, after treatment with acetic anhydride, and neutralising, was saponified with 25 c.c. of a 10 per cent. caustic soda solution.

From The Handbook of Soap Manufacture by W. H. Simmons

The intermediate layer is difficult to treat satisfactorily; it is generally washed twice with water, the washings being added to glycerine water, and the fatty mixture saponified and the resultant soap utilised.

From The Handbook of Soap Manufacture by W. H. Simmons

It is saponified by alkalies, with reproduction of soluble gum.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" by Various

It was necessary to separate the glycerine from this fat by saponifying it.

From The Mysterious Island by Stephen W. White

He states that it is made by saponifying mutton fat with lime, and then separating the fatty acids from the soap thus formed, by means of a mineral acid.

From The Art of Perfumery And Methods of Obtaining the Odors of Plants by George William Septimus Piesse

Thus, if we use caustic alkali as our saponifying agent for a fat or oil, we obtain the sodium or potassium salt of the higher fatty acids or soap and the alcohol, glycerine.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

It was then necessary to separate the glycerine from the fat by saponifying it.

From The Mysterious Island by Jules Verne

Where the glycerine is obtained from spent lye by saponifying the fats or oils with caustic alkali.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

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