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High purity solvents

for the pharmaceutical industry

Oxygenated Solvents

SEQENS offers a range of high quality oxygenated solvents.

Upstream integrated in high quality acetone we have developed unique own technology to produce 

  • Isopropanol, 5 grades: Techincal, Cosmetic, Pharma GMP (EXCiPACT certified) Electronic, Recovered  
  • Isopropyl acetate 
  • Di isopropyl ether 

Our oxygenated solvents are of low toxicity, environmentally friendly and several are non VOC, allowing wide formulating opportunities.

Low VOC Solvents

Everybody is familiar with the strong and distinct odour of paint and nail varnish remover. These odours are due to certain compounds evaporating. The ability of a compound to evaporate is known as its volatility. A Volatile Organic Compound or VOC is a carbon-based chemical that has the tendency to evaporate quickly. This speed of evaporation makes them difficult to work with and can cause harmful effects, not only to the environment but to health. Therefore low or non VOC solvents have become increasingly important for industrial purposes. One of those applications being paints and coatings into which Seqens offer our non VOC Coasol ® range of coalescent products.

Solvent recovery

Our Custom & Specialties facilities in the United Kingdom offer a complete solvent recovery solution.

Whether it is a discrete solvent parcel of a few hundred tons or a regular stream for recycle totaling thousands of tons per year then we have vast experience in recovering and recycling a wide range of streams and by-products from across different manufacturing sectors (Pharma, Personal Care, Electronics and Agrochemical) a key one being Oil & Gas to which we offer a large scale, onshore desalination service.

Our expertise in distillation results in high purity materials that can be sold back to industry or returned to you improving circular economy, reducing total cost of ownership and improving your sustainability credentials.


  • Alcohols
  • Hydrocarbons
  • Aromatic solvent
  • Halogenated solvents
  • Ketones
  • Esters
  • Organic acids
  • Amines

Selling ethics for recovered solvents

When reselling our recovered solvents, we ensure that duty of care is taken into account and we are very aware of the ethics of using recovered solvents in relation to the industry in which the solvents are then used. We therefore sell the products to our customers on the following understanding:

This product comprises recovered material and should not be used for any tobacco products, medical devices, food, animal or pharmaceutical applications. The buyer shall ensure any onward sale of product or formulation containing product shall be similarly described. By accepting the order, the buyer agrees to these conditions. The buyer is aware that this is a recovered product and takes all responsibility for any claims arising from any onwards sale of the product.

Other solvents

  • Diisopropyl adipate (DIPA) 
    • Speciality solvent in household cleaners. Function as low temperature resistant and low viscosity plasticizer for PVC and its copolymers and cellulose esters.


  • Dimethyl adipate
    • A low toxicity, low odour, non VOC, readily biodegradable solvent that can be used in a variety of applications including agrochemicals, polymer intermediates, screening creams and lotions.


  • Ethylene glycol diacetate
    • A colourless, low odour solvent with a very slow evaporation profile that finds major applications in foundry core-binding and in thermoplastic acrylic coatings.


  • 2-Ethylhexyl acetate
    • A clear, high boiling polar solvent with low volatility, suitable as a carrier solvent for nitrocellulose production and many other natural and synthetic resins used in a wide range of industrial applications.


  • Di-n-butylether (DnBE) 
    • A speciality solvent that is finding increasing use as a replacement for THF in Grignard, Wittig and other organo-metallic reactions and is used in the production of CD-R.


  • n-Pentyl Propionate
    • A solvent used in various applications, such as floor cleaners. It is a Non-HAP (Hazardous Air Pollutant) Solvent and has good solvency in coatings applications, particularly in automotive coatings and Inks. It has a slow evaporation rate and a high boiling point.













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