chemistry

Piroctone olamine

Piroctone olamine is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Piroctone olamine rather than just read about it. In short: Piroctone olamine (INN; also known as piroctone ethanolamine) is an organic compound used as an antimicrobial active in anti-dandruff and anti-seborrhoeic dermatitis scalp products. It is the ethanolamine salt of piroctone, a hydroxamic acid derivative.

Key takeaways

Piroctone olamine belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Piroctone olamine to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Piroctone olamine from memory before moving on to harder problems.

Reference excerpt

Piroctone olamine (INN; also known as piroctone ethanolamine) is an organic compound used as an antimicrobial active in anti-dandruff and anti-seborrhoeic dermatitis scalp products. It is the ethanolamine salt of piroctone, a hydroxamic acid derivative. It is described as a white to slightly yellowish-white crystalline powder with a mild characteristic odour, very slightly soluble in water and freely soluble in ethanol, chloroform, and ether. It has been marketed by Clariant under the trade name Octopirox. According to later published sources, piroctone olamine was first synthesized in 1979 by Schwarzkopf-Henkel in Germany.

Uses Piroctone olamine is widely used in anti-dandruff shampoos and other scalp-care products. It has also been used in topical preparations for fungal infections and has been studied in formulations for seborrhoeic dermatitis. In KEGG it is classified as an antiseborrheic drug.

Mechanism of action Piroctone olamine is generally described as an antifungal active associated with suppression of scalp microorganisms, especially species of Malassezia linked to dandruff and seborrhoeic dermatitis. Proposed mechanisms in the literature include inhibition of ergosterol synthesis and, alternatively, penetration of the fungal cell membrane followed by chelation of iron ions, with interference in mitochondrial energy metabolism. The exact mechanism of action has not been fully established.

Regulation In the European Union, piroctone olamine is listed in Annex V of Regulation (EC) No 1223/2009 as an allowed preservative in cosmetic products, with a maximum concentration of 1.0% in rinse-off products and 0.5% in other products. The former Scientific Committee on Cosmetic Products and Non-Food Products Intended for Consumers (SCCNFP) also reviewed the safety of piroctone olamine and its monoethanolamine salt for non-preservative uses in leave-on facial products.

References

Illustrations

Worked examples

Example 1 — a first encounter with Piroctone olamine

Start with the simplest possible case. Write down what Piroctone olamine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Piroctone olamine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Piroctone olamine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Piroctone olamine

In research: Piroctone olamine appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Piroctone olamine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Piroctone olamine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2-Pyridones, Antifungals, Cosmetics chemicals, so understanding it makes those chapters shorter.
In everyday life: Look for Piroctone olamine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Piroctone olamine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Piroctone olamine means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Piroctone olamine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Piroctone olamine in simple terms?

Why does Piroctone olamine matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Piroctone olamine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Piroctone olamine.