Potassium permanganate

high hazard

Also: permanganate, Condy’s crystals

WaterFirst aid

A purple oxidizer still used to pretreat some water (iron, hydrogen sulfide) and as a dilute soak in old protocols. It stains everything and will ignite glycerin on contact. Store it like it wants to burn the shelf.

Shelf life: Indefinite dry
Container: Amber glass, own bin, OXIDIZER label
Grade: Technical or USP crystals. Know the percent.

What it does

▸Water pre-treatment for iron / odor in some field systems, followed by real disinfection
▸Very dilute soaks in some traditional skin protocols — commercial products are safer

Store

▸Alone. Amber glass. Away from every organic liquid in this book.

Hazards

▸Glycerin + permanganate can self-ignite at room temperature.
▸Concentrated solutions burn skin and stain it brown-black.
▸Keep off oils, waxes, camphor, and jelly.

Never mix

Glycerin Petroleum jelly Camphor Beeswax Paraffin wax Ethanol Isopropyl alcohol 70%Hydrogen peroxide 3%

Gear

Gloves · Goggles · Old clothes

In the field

If you do not already have a reason and a written dilution, skip this compound. Bleach and boiling cover drinking water for almost every den.

Source

Water-treatment and laboratory suppliers. Not a grocery item — that is a clue about the risk.