chemistry

Ximenynic acid

Ximenynic acid 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 Ximenynic acid rather than just read about it. In short: Ximenynic acid is trans-11-octadecen-9-ynoic acid, a long-chain acetylenic fatty acid. Discovery It was discovered in the fruit kernels of three species of South American plants in the genus Ximenia, after which it is named. and found to have the formula C18H30O2.

Key takeaways

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

Reference excerpt

Ximenynic acid is trans-11-octadecen-9-ynoic acid, a long-chain acetylenic fatty acid.

Discovery It was discovered in the fruit kernels of three species of South American plants in the genus Ximenia, after which it is named. and found to have the formula C18H30O2.

Natural occurrence It can be extracted from the fruit kernels of the Santalum obtusifolium (Sandalwood) and the Australian sandalwood Santalum spicatum It is also found in seed oil of other plants in the Santalaceae family, including the native cherry Exocarpos cupressiformis and sweet quandong Santalum acuminatum.

Patents It was the subject of a 2003 European patent (for use in food). The patent application was deemed withdrawn in August 2012.

Uses It is used in some skincare products.

Worked examples

Example 1 — a first encounter with Ximenynic acid

Start with the simplest possible case. Write down what Ximenynic acid 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 Ximenynic acid 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 Ximenynic acid 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 Ximenynic acid

In research: Ximenynic acid 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 Ximenynic acid 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: Ximenynic acid is common in secondary-school and first-year university syllabi. It links to neighbouring topics Conjugated enynes, Fatty acids, so understanding it makes those chapters shorter.
In everyday life: Look for Ximenynic acid 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 Ximenynic acid in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ximenynic acid 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 Ximenynic acid out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ximenynic acid in simple terms?

Ximenynic acid is trans-11-octadecen-9-ynoic acid, a long-chain acetylenic fatty acid. Discovery It was discovered in the fruit kernels of three species of South American plants in the genus Ximenia, after which it is named. and found to have the formula C18H30O2.

Why does Ximenynic acid 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 Ximenynic acid?

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 Ximenynic acid.