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Chemistry
New in Chemistry (page 14 of 23)
Jan 30, 2008 | 06:52 AM CST
Patent vs. Trademark vs. Copyright
Industry expert Tony O'Lenick distinguishes between patents, which protect inventions; trademarks--symbols to indicate the source of goods; and copyrights that protect original works of authorship.
Jan 14, 2008 | 05:25 PM CST
Molecular Weight of Compound vs. Polymer
Compounds generally have one molecular weight but polymers are different; their molecular weight usually is a bell-shaped curve of a distribution of molecular weights.
Jan 04, 2008 | 10:25 AM CST
Formulating Focus: The Influence of Emollients on Skin Penetration
By: J.W. Wiechers, PhD, JW Solutions
This column will discuss ways in which ingredients can positively affect the partition coefficient of the active between the formula and the skin. By carefully selecting the emollients used in a formulation, formulators can increase the delivery and clinical efficacy of a formulation without increasing the level of the active ingredient.
Jan 04, 2008 | 10:20 AM CST
Technically Speaking: From Enzymes to Fragrance Ingredient Testing: A Literature Overview
By: C. Fox, Independent Consultant
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Dec 18, 2007 | 05:09 PM CST
Degree of Polymerization vs. Degree of Crosslinking
Industry expert Tony O'Lenick explains that both degree of polymerization and degree of crosslinking are terms that apply to polymers but they define very different attributes.
Dec 04, 2007 | 01:11 PM CST
Drug-likeness vs. Lipinski’s Rule of Five
Tony O'Lenick discusses the difference between drug-likeness and Lipinski's Rule of Five.
Dec 03, 2007 | 03:18 PM CST
Technically Speaking—Thioredoxin and Other Topics
By: Charles Fox, Independent Consultant
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Nov 02, 2007 | 11:33 AM CDT
Technically Speaking: Topical Botulinum Toxin, FOITS to Measure Anti-wrinkle, and More
By: Charles Fox, Independent Consultant
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Oct 24, 2007 | 02:08 PM CDT
Happy Belated Mole Day!
All chemists know what a mole is, but most do not know that there is an actual holiday celebrating the mole—and it was yesterday...
Oct 23, 2007 | 04:13 PM CDT
Solubility vs. Partition Coefficient
Getting back to the basics, Tony O'Lenick takes a look at the difference between solubility and partition coefficient.