सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण

दुनिया का सबसे व्यापक रूप से उपयोग किया जाने वाला दर्दनिवारक

Pharmaceutical & Drug Manufacturing Global Industrial Scale $1.3 billion

अवलोकन

Aspirin (acetylsalicylic acid) is manufactured through the acetylation of salicylic acid with acetic anhydride. First synthesized by Felix Hoffmann at Bayer in 1897, aspirin remains one of the most consumed medications worldwide. The industrial process uses batch reactors with precise temperature control to achieve high yields and pharmaceutical-grade purity. Annual consumption exceeds 40,000 tons globally, used as an analgesic, antipyretic, anti-inflammatory, and antiplatelet agent.

रासायनिक प्रक्रिया

Salicylic acid reacts with acetic anhydride in the presence of an acid catalyst (phosphoric or sulfuric acid) at 85-90 degrees C. The product is purified by recrystallization from ethanol-water mixtures.

C₇H₆O₃ + (CH₃CO)₂O → C₉H₈O₄ + CH₃COOH

कच्चा माल

  • Salicylic acid (C₇H₆O₃) — Kolbe-Schmitt reaction from phenol (Reactant)
  • Acetic anhydride ((CH₃CO)₂O) — Ketene process (Acetylating agent)
  • Phosphoric acid (H₃PO₄) — Wet process from phosphate rock (Catalyst)

अंतिम उत्पाद

  • Acetylsalicylic acid (C₉H₈O₄) — Analgesic and antiplatelet drug (USP grade, >99.5% purity)
  • Acetic acid (CH₃COOH) — Recycled or sold as byproduct (Recovered by distillation)
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Environmental Impact

The synthesis generates acetic acid as a byproduct, which is typically recovered and recycled. Solvent use in recrystallization contributes to VOC emissions, though modern plants use closed-loop solvent recovery. Overall environmental footprint is moderate compared to more complex pharmaceuticals.

सुरक्षा संबंधी विचार

हालिया नवाचार

Continuous flow synthesis methods have been developed to replace traditional batch processing, offering better heat transfer, reduced reaction times, and improved safety.
Green chemistry approaches using ionic liquid catalysts are being explored to eliminate acid waste.

उत्पादन पैमाना

44000

टन/वर्ष

$1.3 billion

बाज़ार मूल्य

%(name)s में और Pharmaceutical & Drug Manufacturing

आइबुप्रोफेन संश्लेषण — BHC हरित प्रक्रिया

Global Industrial Scale

एमोक्सिसिलिन अर्ध-सिंथेटिक उत्पादन

Global Industrial Scale

किण्वन द्वारा पेनिसिलिन G उत्पादन

Global Industrial Scale

पुनर्संयोजक मानव इंसुलिन उत्पादन

Global Industrial Scale

पेरासिटामोल (एसिटामिनोफेन) संश्लेषण

Global Industrial Scale

प्रोटॉन पंप अवरोधकों के लिए ओमेप्राज़ोल संश्लेषण

Global Industrial Scale

मेटफॉर्मिन हाइड्रोक्लोराइड संश्लेषण

Global Industrial Scale

Frequently Asked Questions

What industry uses सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण?
सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण is used in the pharmaceutical & drug manufacturing sector at global industrial scale scale.
What process is involved in सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण?
Salicylic acid reacts with acetic anhydride in the presence of an acid catalyst (phosphoric or sulfuric acid) at 85-90 degrees C. The product is purified by recrystallization from ethanol-water mixtures.
What is the economic significance of सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण?
सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण has a market value of $1.3 billion and annual production of 44,000 tons.
What is the environmental impact of सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण?
The synthesis generates acetic acid as a byproduct, which is typically recovered and recycled. Solvent use in recrystallization contributes to VOC emissions, though modern plants use closed-loop solvent recovery. Overall environmental footprint is moderate compared to more complex pharmaceuticals.
What raw materials are used in सैलिसिलिक अम्ल के एसिटाइलेशन द्वारा एस्पिरिन संश्लेषण?
The main raw materials include: Salicylic acid (C₇H₆O₃), Acetic anhydride ((CH₃CO)₂O), Phosphoric acid (H₃PO₄).