The handbook of soap manufacture

Metadata

Gutenberg ID

21724

Title

The handbook of soap manufacture

Language

en

Book source

Project Gutenberg

Description max 80 words

A comprehensive technical guide to modern soap manufacturing, this handbook details the production of household and toilet soaps using up-to-date factory methods. It bridges practical craftsmanship with scientific theory, covering raw materials, chemical reactions, and industrial processes for soapmakers and analysts.

Summary up to 500 words

Published in 1908, *The Handbook of Soap Manufacture* by W. H. Simmons and H. A. Appleton serves as a definitive guide for the soap industry during a period of rapid scientific advancement. The authors argue that successful competition in the early 20th-century market demands not only practical skill but also a sound theoretical understanding of chemistry. The text systematically defines soap as the combination of fatty acids with metallic bases, primarily sodium or potassium, distinguishing it from other metallic salts like rosinates. It explores the properties of these soaps, including their solubility in alcohol and hot water, their colloidal behavior when cooled, and the phenomenon of hydrolysis, where water decomposes soap into alkali and fatty acids. The handbook delves deeply into the constitution of oils and fats, referencing the pioneering research of Chevreul and Berthelot. It details the mechanisms of saponification and the various methods to accelerate hydrolysis, including the application of heat, electricity, and chemical reagents. A significant portion is dedicated to the action of enzymes, specifically the castor-seed ferment, which splits oils into fatty acids and glycerine. The authors examine the hydrolytic power of various seeds and animal enzymes like steapsin, providing data on yields and reaction conditions. Raw materials, ranging from animal fats and vegetable oils to waste fats and rosin, are analyzed in detail, including their bleaching and treatment. The book provides comprehensive instructions on manufacturing processes, covering both cold and hot methods, saponification under pressure, and the production of specialized varieties such as transparent, mottled, and textile soaps. It also addresses the formulation of perfumes using essential oils and synthetic compounds, as well as the coloring of soaps. Furthermore, the text offers extensive guidance on the manufacture and purification of glycerine, a valuable byproduct, and includes detailed procedures for the analysis of raw materials, soaps, and glycerine. With extensive data on specific gravities, thermometric scales, and saponification equivalents, this work stands as an invaluable resource for works' chemists and analysts seeking to optimize production and quality in a competitive industrial landscape.

LLM editorial rating

4.2/5

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Local file path

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Categories

• Soap