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Salt, Hydrate or Free Base? Reading the Parenthetical on an API Specification

What the salt, hydrate or polymorph named on an API specification actually changes - counter-ion choice, hydration stoic···
Mild Surfactant Systems: What to Check Before You Reformulate Away From SLS and SLES

How to specify a mild, sulfate-free surfactant system: head-group chemistry, amphoteric and glucoside behaviour, amidoam···
Pesticide Technical Material: What to Check Before You Compare Prices

A practical guide to buying pesticide technical material and agrochemical intermediates: mode of action groups, assay an···
Same Formula, Different Smell: How Isomers Decide What an Aroma Chemical Does

A 99% assay can still describe two different materials. The isomer and enantiomer numbers that decide how an aroma chemi···
Reading a Pigment Specification: What a Colour Index Number Does and Does Not Tell You

A Colour Index name fixes the molecule and nothing else. The eight lines that decide whether a pigment, dye or vat colou···
Reading a Probiotic Specification: Strain Identity, CFU Count and the Viability Question

A probiotic quotation describes a strain, a count and a survival claim. Which of the three numbers actually binds a supp···
Standardised Botanical Extracts Compared: Milk Thistle, Ginkgo, Rhodiola, Ashwagandha, Grape Seed and Elderberry

A botanical extract is bought on a number, not a plant. Why the marker, the assay method and the plant part decide wheth···
Chelating Agents Compared: EDTA Acid, Tetrasodium EDTA, CaNa2-EDTA, NaFeEDTA, DTPA and Glucoheptonate

A few tens of milligrams of dissolved metal per litre is enough to wreck a formulation. It yellows a shampoo, catalyses ···
Rubber Additives Explained: Accelerator, Blowing Agent, Antiozonant and Slip Agent

An accelerator sets cure time, a blowing agent decides cell structure, an antiozonant governs ageing and a slip agent wo···
DOTP, DOA, DOP and DBA: Choosing a PVC Plasticizer by Performance, Not by Price Alone

DOTP, DOA, DOP and DBA are all quoted as PVC plasticizers, yet they differ in flash point, density, cold flex and regula···

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