# Stanislao Cannizzaro

> Italian chemist (1826-1910)

**Wikidata**: [Q128759](https://www.wikidata.org/wiki/Q128759)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Stanislao_Cannizzaro)  
**Source**: https://4ort.xyz/entity/stanislao-cannizzaro

## Summary
Stanislao Cannizzaro was an Italian chemist renowned for his formulation of the Cannizzaro reaction, a fundamental organic chemistry process. Born in 1826, he made significant contributions to atomic theory and chemical education, serving as a university professor and member of prestigious scientific academies.

## Biography
- **Born:** July 13, 1826
- **Nationality:** Italian (Kingdom of Italy)
- **Education:** Studied at the University of Palermo and the University of Pisa
- **Known for:** Cannizzaro reaction, advocacy for atomic theory
- **Employer(s):** University of Palermo, University of Genoa, Sapienza University of Rome
- **Field(s):** Chemistry, organic chemistry

## Contributions
- **Cannizzaro Reaction (1853):** Discovered the base-induced disproportionation of aldehydes, a cornerstone of organic synthesis.
- **Atomic Theory Advocacy:** Promoted the distinction between atoms and molecules, clarifying Avogadro's hypotheses.
- **Academic Leadership:** Taught at multiple Italian universities, shaping chemical education and research.
- **Professional Memberships:** Elected to the Royal Society, Saint Petersburg Academy of Sciences, and Accademia Nazionale dei Lincei, among others.

## FAQs
### Q: What is Stanislao Cannizzaro best known for?
A: Cannizzaro is best known for discovering the Cannizzaro reaction in 1853, a key process in organic chemistry, and for his work in clarifying atomic theory.

### Q: Where did Cannizzaro work?
A: He held academic positions at the University of Palermo, University of Genoa, and Sapienza University of Rome, and was affiliated with institutions like the Royal Society and Accademia Nazionale dei Lincei.

### Q: What awards did Cannizzaro receive?
A: He was awarded the Copley Medal and the Faraday Lectureship Prize, recognizing his contributions to chemistry.

### Q: How did Cannizzaro influence atomic theory?
A: Cannizzaro helped resolve confusion around atomic weights by distinguishing atoms from molecules, building on Avogadro's work and advancing modern chemistry.

## Why They Matter
Stanislao Cannizzaro's formulation of the Cannizzaro reaction provided a critical tool for organic synthesis, enabling advancements in pharmaceuticals and materials science. His clarification of atomic theory resolved longstanding debates, establishing foundational principles for modern chemistry. As an educator and academic leader, he trained generations of chemists and elevated Italy's scientific reputation through his international collaborations and academy memberships.

## Notable For
- **Cannizzaro Reaction:** A landmark discovery in organic chemistry (1853).
- **Atomic Theory Clarification:** Distinguished atoms and molecules, advancing chemical understanding.
- **Copley Medal (1878):** Prestigious award from the Royal Society for outstanding scientific achievement.
- **Faraday Lectureship Prize:** Recognized for exceptional contributions to chemistry.
- **Academy Memberships:** Elected to the Royal Society, Saint Petersburg Academy of Sciences, and Accademia Nazionale dei Lincei.

## Body
### Early Life and Education
Stanislao Cannizzaro was born on July 13, 1826, in Palermo, Kingdom of Italy. He pursued his education at the University of Palermo and later at the University of Pisa, laying the groundwork for his career in chemistry.

### Career and Academic Roles
Cannizzaro held teaching positions at several Italian universities, including the University of Palermo, University of Genoa, and Sapienza University of Rome. His academic roles allowed him to influence chemical education and conduct research that shaped the field.

### Scientific Contributions
- **Cannizzaro Reaction (1853):** This discovery, involving the base-induced disproportionation of aldehydes into alcohols and carboxylic acids, became a fundamental tool in organic synthesis.
- **Atomic Theory Advocacy:** Cannizzaro distinguished between atoms and molecules, resolving ambiguities in atomic weight determination and supporting Avogadro's hypothesis. This work was pivotal in establishing modern atomic theory.

### Professional Recognition and Memberships
Cannizzaro's contributions earned him election to prestigious academies, including the Royal Society (1878), Saint Petersburg Academy of Sciences, and Accademia Nazionale dei Lincei. He received the Copley Medal (1878) and the Faraday Lectureship Prize, highlighting his international recognition.

### Legacy
Cannizzaro's reaction remains a staple in organic chemistry education and industrial processes. His theoretical work provided clarity to atomic theory, enabling subsequent advancements in chemistry. As an educator and academy member, he fostered collaboration and elevated Italy's scientific standing, ensuring his legacy as a foundational figure in modern chemistry.

## References

1. Great Soviet Encyclopedia (1969–1978)
2. www.accademiadellescienze.it
3. BnF authorities
4. Integrated Authority File
5. [Award winners : Copley Medal. Royal Society](https://docs.google.com/spreadsheets/d/1dsunM9ukGLgaW3HdG9cvJ_QKd7pWjGI0qi_fCb1ROD4/pubhtml?gid=1336391689&single=true)
6. Complete List of Royal Society Fellows 1660-2007
7. International Standard Name Identifier
8. Virtual International Authority File
9. CiNii Research
10. OPAC SBN
11. Encyclopædia Britannica Online
12. SNAC
13. Brockhaus Enzyklopädie
14. Gran Enciclopèdia Catalana
15. Proleksis Encyclopedia
16. Croatian Encyclopedia
17. La France savante
18. Freebase Data Dumps. 2013
19. [Source](http://digitale.beic.it/primo_library/libweb/action/search.do?fn=search&vid=BEIC&vl%283134987UI0%29=creator&vl%28freeText0%29=Cannizzaro%20Stanislao)
20. nobelprize.org
21. [BnF authorities](http://data.bnf.fr/ark:/12148/cb12560268q)
22. CONOR.SI
23. CERL Thesaurus
24. Dizionario Biografico degli Italiani
25. Treccani's Enciclopedia on line
26. Enciclopedia Treccani
27. FactGrid