Citroflex™ B-6 Plasticizer

Citroflex B-6 Plasticizer (n-Butyryl Tri-n-hexyl Citrate) is a citric acid ester specially formulated for use in PVC medical articles such as tubing and intravenous bags where the content medium is aqueous-based. 

 Medical application examples include:

  • Extra-corporeal tubing
  • Blood bags
  • IV solution containers & sets
  • Catheters


Medical Components

Citroflex B-6 Plasticizer has low extractability into lipid media, making it particularly useful for blood bags and related products. It nearly duplicates the properties of diethylhexyl phthalate (DEHP).

Medical Tubing

B-6 enables the tubing to maintain flexibility and resistance to cracking at low temperatures. Unlike other phthalate-free alternatives, such as di(2-Ethylhexyl)adipate (DEHA), Citroflex B-6 Plasticizer exhibits lower volatility and reduced potential for leaching. 


Typical Properties

Acid Value
Hydroxyl Value
Saponification Value
Iodine Value
Melt Point (°C)
Specific Gravity

Application Highlights

Blood Bags

High molecular weight,
low extractability,
prevents plasticizer migration

Medical Tubing

Strong polymer compatibility, 
low-temperature flexibility

Additional Resources

Available upon request. Please use the Contact Us form. 

Available upon request. Please use the Contact Us form. 

  • Citroflex™ A-6 Plasticizer

Citroflex™ Citric Acid Esters

Citroflex citric acid esters are suitable for use as phthalate-free alternatives to plasticizers such as low molecular weight adipates, phthalates, and sebacates in various polymer applications. 

These esters are partially derived from bio-based raw materials and have been demonstrated to be biodegraded by microorganisms in soil.

They are ideal for use in bio-polymer systems and applications where high bio-sourced content or end-of-life biodegradability are desirable.

Citroflex esters are not volatile organic compounds (VOCs).

Versatile. Renewable. Biodegradable.  

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