Kolkata Chemical: The Pioneering Force of Phosphoric Acid in India

Kolkata Chemical: The Pioneering Force of Phosphoric Acid in India

Kolkata, the ‘City of Joy’, a place deeply intertwined with India’s historical and cultural roots. It’s here that Kolkata Chemical, an industry titan in the realm of phosphoric acid production, has birthed and blossomed. With its robust ethos, unwavering dedication, and unparalleled prowess, Kolkata Chemical has etched a name for itself, not just in the city’s industrial landscape, but also on the global stage.

CAS Number (CAS NO)

To start with the basics, phosphoric acid is recognized universally by its CAS Number: 7664-38-2.


This pivotal chemical compound is identified by the simple yet significant formula H₃PO₄.

Product Description

Phosphoric acid is a mineral acid. With its colourless and odourless attributes, this chemical marvel exhibits a synergetic blend of strength and adaptability.

Usage & Application

Phosphoric acid (H₃PO₄) is a versatile and important chemical compound with a wide range of applications across various sectors due to its acidity, reactivity, and unique properties. This report delves into the applications and uses of phosphoric acid in different sectors, highlighting its properties, production methods, and advantages in each application.

1. Fertilizer Industry: Phosphoric acid is a crucial component in the production of phosphorus-containing fertilizers, which are essential for plant growth and development.

  • Phosphate Fertilizers: Phosphoric acid is a key ingredient in the production of phosphate fertilizers, such as monoammonium phosphate (MAP) and diammonium phosphate (DAP), providing plants with essential phosphorus nutrients.

2. Food and Beverage Industry: Phosphoric acid has applications in the food and beverage sector, particularly in the production of carbonated beverages.

  • Acidulant: It is used as an acidulant in soft drinks and other carbonated beverages to provide tartness and acidity.
  • Food Additive: Phosphoric acid is used as an additive to adjust pH, enhance flavor, and prevent discoloration in various food products.

3. Pharmaceutical Industry: Phosphoric acid has limited applications in the pharmaceutical sector.

  • Medicine Preparation: It is used as an ingredient in certain medicines and oral solutions, particularly for its buffering and acidifying properties.

4. Water Treatment: Phosphoric acid is used in water treatment processes for pH adjustment and corrosion control.

  • Corrosion Inhibition: It is used to control the pH and prevent corrosion in water distribution systems and industrial equipment.

5. Metal Cleaning and Etching: Phosphoric acid is used for cleaning and etching metal surfaces in various industries.

  • Metal Etching: It is employed for etching and cleaning metal surfaces in industries such as electronics, automotive, and aerospace.

6. Dental and Oral Care: Phosphoric acid has applications in dental treatments.

  • Tooth Cleaning: It is used in dental treatments to clean and prepare tooth surfaces before bonding dental materials.

7. Chemical Manufacturing: Phosphoric acid serves as a reactant in various chemical synthesis reactions.

  • Phosphate Salts: It is used to produce a variety of phosphate salts used in industries such as food, agriculture, and pharmaceuticals.
  • Catalysis: Phosphoric acid can serve as a catalyst in certain chemical reactions.

8. Leather Industry: Phosphoric acid is used in leather processing for its acidity and reactivity.

  • Leather Tanning: It is used in the tanning process to adjust pH and enhance the penetration of tanning agents.

9. Electronics Industry: Phosphoric acid has applications in the electronics sector.

  • Semiconductor Manufacturing: It is used for cleaning and etching semiconductor surfaces and for removing metal oxides.

10. Agriculture: Phosphoric acid can be used in agriculture for specific purposes.

  • Soil pH Adjustment: It can be used to adjust soil pH in certain cases where acidic conditions are required.

11. Flame Retardants: Phosphoric acid derivatives are used as flame retardants.

  • Flame Retardant Additives: Some phosphoric acid derivatives are used as flame retardant additives in materials like plastics and textiles.

12. Chemical Analysis and Laboratories: Phosphoric acid is used in laboratories for various analytical purposes.

  • Digestion: It is used for sample digestion in analytical chemistry to prepare samples for testing.
  • Buffering Agent: Phosphoric acid can act as a buffer in certain analytical methods.

phosphoric acid’s acidity, reactivity, and unique properties make it a versatile compound with applications in multiple sectors. Its uses span from fertilizer production and food and beverage processing to pharmaceuticals, water treatment, metal cleaning, dental care, chemical manufacturing, leather processing, electronics, agriculture, flame retardants, and chemical analysis. While its diverse applications underscore its importance, its strong acidic nature necessitates careful handling and usage in various industries. As industries continue to evolve and prioritize safety, efficiency, and environmental concerns, the applications of phosphoric acid are expected to expand, reinforcing its role as a foundational component in modern manufacturing, agriculture, and technology.

Product Parameters

Grade Standard: With a spectrum that spans from technical to food-grade, Kolkata Chemical caters to a multitude of industries.

Certification: Accredited with multiple global certifications, underlining its world-class quality.

Purity: Customizable purity levels, typically oscillating between 75% to 85%.

Appearance: A pristine, transparent liquid is emblematic of its pure essence.


Kolkata Chemical’s phosphoric acid is synonymous with impeccable quality, adhering to the loftiest international benchmarks.

Our Advantages

  1. Global Footprint: With a presence spanning cities like Dubai, Istanbul, London, New York, and Tokyo, Kolkata Chemical’s reach is truly international.
  2. Technological Vanguard: Harnessing contemporary technology for unparalleled product quality.
  3. Sustainability Pioneers: Emphasizing green processes for a sustainable tomorrow.
  4. Customer-Centric Paradigm: Bespoke solutions, tailoring to the unique requisites of every client.

Production Capacity

With an infrastructure that is a confluence of tradition and technology, Kolkata Chemical can effortlessly meet surging demands, irrespective of their magnitude.

Quality Control

Every drop of phosphoric acid undergoes a stringent quality check, mirroring the company’s unwavering commitment to excellence.


Kolkata Chemical celebrates the diversity of demands, offering tailored phosphoric acid variations befitting precise industry needs.

Company Info

Strategically positioned in the heart of Kolkata, the company’s sprawling facility stands as a testament to innovation, passion, and relentless pursuit of excellence.


The essence of its top-tier quality is retained through state-of-the-art packaging, ensuring the product remains untainted during its journey.

Physical Properties

Ensuring consistency batch after batch, the physical characteristics like density, viscosity, and pH are maintained at optimal levels.


Adequate storage systems are in place to retain the longevity and efficacy of the phosphoric acid, ensuring it remains undiluted in its potency.

Quality Inspection

From raw material procurement to the final product dispatch, every stage is punctuated by rigorous quality assessments.

Plant Area

Nestled in Kolkata’s industrial expanse, the sprawling plant area is a fusion of cutting-edge machinery and seasoned expertise.

Terms of Payment & Quotation

With transparency and trust as its bedrock, the company offers seamless payment and quotation processes, enhancing client experiences.

Nearest Port

Kolkata Port, one of India’s premier maritime gateways, is in close proximity, ensuring swift and streamlined shipments.

Import & Export Mode

With a well-oiled global trading mechanism, Kolkata Chemical ensures seamless import and export operations, further solidifying its position as a global industry giant.

Kolkata Chemical is more than just an industry behemoth; it’s a legacy. A legacy born in the cultural crucible of Kolkata and nurtured by a vision that transcends geographical boundaries. As it continues to ascend the ladder of global acclaim, Kolkata Chemical doesn’t just represent a business success; it symbolizes the very spirit of Kolkata – rich in heritage, rooted in values, and relentless in its pursuit of excellence. In the sprawling world of chemical industries, Kolkata Chemical stands tall, not just as a producer of phosphoric acid, but as a beacon of Indian industrial might on the global stage.

For inquiries and orders, please get in touch with us at Email-


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