Solvent Black 27

Understanding Solvent Black 27: What is it and How is it Used?

Solvent Black 27 is a synthetic dye that is commonly used in various industries, including ink, paints & coatings, leather and stone industry. This dye is known for its intense black colour and excellent solubility in various solvents.

In this article, we will explore the chemical properties of Solvent Black 27, its various applications, the manufacturing process, safety and regulations, environmental impact, and future prospects for its use. By the end of this article, you will have a comprehensive understanding of Solvent Black 27 and its importance in various industries.

Molecular structure

Solvent Black 27 is an azo metal complex dye and its molecular formula is C17H13N3O4Cr1/2. It has a complex and aromatic molecular structure.

Physical Properties 

Solvent Black 27 is a black powder with almost no odour. Its physical properties include:

  • Density: 1.33 g/cm3
  • Bulk Volume: 3.5 ltr/kg
  • Appearance: Black powder
  • pH: 6

Under typical usage and storage conditions, Solvent Black 27 is unaffected by frost and under dry conditions can be stored almost indefinitely. However, like most organic compounds, they are combustible, a point of particular significance during storage. It should also be noted that dyes in drums that have been opened and not resealed may absorb considerable amounts of moisture, depending on the humidity.

Solubility and compatibility with other chemicals

Solvent Black 27 is highly soluble in a range of organic solvents. It shows good solubility in lower alcohols, glycol ethers, ketones, and esters, but are virtually insoluble in aliphatic and aromatic hydrocarbons.

Applications of Solvent Black 27 

Solvent Black 27 has various applications in different industries, including:

  • Ink Industry: Solvent Black 27 is used as a colorant in ink and toner formulations. It imparts a deep black color to the ink or toner, which is essential for printing high-quality documents.
  • Coatings Industry: Solvent Black 27 is used as a colourant in the production of coatings, such as automotive paints, industrial coatings, and wood stains. It provides a high degree of colour intensity and good lightfastness.
  • Stone Industry: Solvent Black 27 is used to manufacture stone converters to enhance and darken the color of a stone, and phase out the color variations of a stone.
  • Leather: Solvent Black 27 is used as a dye for coloring leather products such as shoes, belts, and bags. It provides a consistent and uniform black color to the leather.
  • Other industries: Solvent Black 27 is also used in the production of printing inks, marker pens.

Solvent Black 27 is a versatile dye that provides a deep black colour with good solubility and compatibility with various solvents and chemicals.

The manufacturing process of Solvent Black 27

  • An aromatic amine, in the presence of mineral acid (HCL) & Sodium nitrite at 0-50° C goes under diazotization which complex with coupler in alkaline  medium (pH:8.5 to 11.0) at 3-7° C & form  mono azo
  • Mono azo compound at 95 -1000 C goes under metallization in the presence of chromium or form metal complex dyestuffs.
  • The complex is treated with Amine solution to improve solubility, Filtration rate
  • The mass is isolated by Acidification & filtered through a filter press. It is also washed with required quantity of water & air.
  • The wet cake is unloaded and put into the dryer which is followed by pulverization. Blending is added if required.

The manufacturing process of Solvent Black 27 is complex and requires careful control of reaction conditions and purification steps to ensure the production of high-quality dye with consistent properties. The final product is a black powder that can be used in various applications in the ink, paint and coatings industries.

Disposal methods and waste management

Disposal methods and waste management of Solvent Black 27 are important considerations to ensure the safety of human health and the environment.

Here are some guidelines for the disposal of Solvent Black 27:

  • Sewage disposal-relevant information – Do not empty into drains. Avoid release to the environment. Refer to special instructions/safety data sheets.
  • Waste treatment of containers/packaging – Completely emptied packages can be recycled. Handle contaminated packages in the same way as the substance itself.

It is important to follow local regulations and guidelines for the disposal of Solvent Black 27. Improper disposal can result in environmental pollution and harm human health.

Why Choose Mansi Chemicals for Solvent Dyes

If you are looking for a reliable and trustworthy solvent dyes manufacturer, Mansi Chemicals is a great choice. With over 30 years of experience in the industry, they have established themselves as a leading manufacturer and exporter of solvent-soluble dyes in the world.

They are committed to providing exceptional quality and service, and their mission and vision reflect their dedication to sustainable growth and total customer confidence. Mansi Chemicals is an excellent option for anyone seeking high-quality solvent dyes, speedy delivery, and consistency in their products. Get in touch with solvent dye experts today.

Solvent Dyes

The Future of Solvent Dyes in Industry and Emerging Technologies

Solvent dyes are the substances used for coloring organic solvents, carbon fuels, waxes, lubricants, and other hydrocarbon-based nonpolar materials. Fuel dyes are one of the uses of solvent dyes. Their molecules are nonpolar or little polar and do not undergo any ionization. A colloidal solution is formed in the solvents.

Is it possible to use solvent dyes in other applications?

Solvent dyes are used in metalized polyester films for gold imitation, transparent metallic effects, and other transparent effects. 

They are used in the paper industry for coating products such as typewriter ribbons, copying paper, and printing ink. They are also used in inks, ballpoint pens, printers, and other items which require a double-tone effect. There are so many solvent dye manufacturers present in India. 

For future use of these technologies, it is necessary to understand how the properties of these dyes can be manufactured and integrated into their respective applications. The discovery of new solvent dyes will help the industry realize its goals better.

We’re seeing a big trend in sustainable products for the chemical sector and dyes and pigments. We want to provide products that are more sustainable and reduce their impact on the environment, so we are working on a variety of initiatives as well the development of more environmentally-friendly materials for use in existing formulations.

Emerging techniques in the solvent dyeing industry: 

  • With the new emerging technique, we focus on making a difference by implementing sustainable practices in our products. We use natural colors, and ultrasonic-assisted dyeing, to produce an environmentally friendly product.

  • Dye-Max is a closed system that reduces the use of freshwater, wastewater, and energy by up to 90 percent compared to conventional jet-dyeing systems. It features an extremely low liquor ratio of 0.3 to 0.8 liters per kilogram of fabric, with spray cassettes located in a closed chamber where precision nozzles apply the dye in conjunction with patented imago pro speed valves that control the volume of dye that is applied.


Solvent dyes are one of the most common dyes used in industry, who used to add color to plastics, polymers, and other materials such as metalized polyester film. Solvent-based dyes are used in making textiles, papermaking, and many other industries. 

The most common use of these dyes is in the plastics industry, where they can be applied to PVC and Acetate. Solvent dye manufacturers in India are there to help you out with all your dye issues.

Frequently Asked Questions:

Q1. What are the emerging technologies for textile dyeing?

Ans. Emerging technologies for textile dyeing include digital printing, 3D printing, plasma treatment, and enzymatic treatment. These technologies offer advantages such as reduced water and energy consumption and improved precision and efficiency.

Q2. What is the future of the textile industry globally?

Ans. There is a growing demand for eco-friendly and ethical products, and companies are increasingly adopting sustainable practices to meet these demands.

Q3. What is the current scenario of the Indian textile industry in 2023?

Ans. The industry seems to be headed towards a positive, steady growth phase after a period of turbulence and uncertainty.