chemistry

Victor Dessaignes

Victor Dessaignes 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 Victor Dessaignes rather than just read about it. In short: Victor Dessaignes (31 December 1800 – 4 January 1885) was a French lawyer, physician and chemist. Dessaignes conducted experiments on organic acids and was involved in the synthesis of hippuric acid.

Key takeaways

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

Reference excerpt

Victor Dessaignes (31 December 1800 – 4 January 1885) was a French lawyer, physician and chemist. Dessaignes conducted experiments on organic acids and was involved in the synthesis of hippuric acid. He was also involved in characterizing and naming malonic acid, the synthesis of asparagine from ammonium dimalate, conversion between optical isomers of tartaric acid, fumaric acid in mushrooms and the synthesis of several amides.

Life and work Dessaignes was born in Vendôme, the third son of Jean-Philibert Dessaignes (1762–1832) and Emilie-Françoise Renou. He studied at the college de Vendee that his father had helped develop in Vendôme and went on to study law, admitted to the bar in 1821. He however did not practice and began studies in medicine, graduating in 1835. Unable to handle the sight of blood, he did not practice medicine and moved to chemistry. Dessaignes conducted experiments on organic compounds. Hippuric acid had been produced by Justus von Liebig from horse urine in 1829 and it had then been found that human urine had more hippuric acid upon ingesting benzoic acid. Dessaignes was able to react benzoylchloride with zinc salt of glycine to produce hippuric acid in 1873. In 1858 he extracted malic acid from the rhubarb plant and oxidized it to produce malonic acid. Dessaigne's 1835 doctoral thesis dissertation was titled "Les Corps Analogues par leurs Propriétés Chimiques se Ressemblent-ils par les Modifications qu'ils Impriment aux Organes des Animaux Vivants?" Between 1836 and 1838 he taught anatomy and physiology at Vendôme at a school run by Père Duchesne. Dessaignes married a cousin Victorine-Sophie Renou, sister of Émilien Renou, who had a fall on ice and died shortly after the birth of their son who became a professor of medicine. Dessaignes received the 1860 Jecker prize and was made chevalier of the Legion of Honor in 1863. He died from a respiratory tract infection.

References

Worked examples

Example 1 — a first encounter with Victor Dessaignes

Start with the simplest possible case. Write down what Victor Dessaignes 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 Victor Dessaignes 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 Victor Dessaignes 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 Victor Dessaignes

In research: Victor Dessaignes 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 Victor Dessaignes 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: Victor Dessaignes is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1800 births, 1885 deaths, French chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Victor Dessaignes 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Victor Dessaignes” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Victor Dessaignes in 20 minutes

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

Frequently asked questions

What is Victor Dessaignes in simple terms?

Why does Victor Dessaignes 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 Victor Dessaignes?

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 Victor Dessaignes.