StarNet Logo
International Distributors Logo
Home About Us NEWS Markets Products What's New Search Contact Us

Remove Phthalates From Your Polymers

With environmental and toxicity concerns becoming more critical, the desire to remove phthalates from polymer compounds around the globe is rapidly increasing. Initially, DOP (Di-2-ethylhexyl phthalate) came under attack many years ago when it had to be classified as a potential carcinogen. The natural progression for most compounders was to DINP (Di-isononyl phthalate) and DIDP (Di-isodecyl phthalate). Also, several linear phthalates with varying carbon chain length alcohols (C-6 to C-11) were available in the market place. However, now phthalate esters as a whole are falling out of favor especially when used in children's toys, medical goods and food contact products.

HallStar's innovative PLASTHALL® PR-series of plasticizers is on the leading edge of phthalate replacement technology. The PR-series is a full line of commercially available phthalate alternatives / replacements, for use in all types of polymer applications, especially PVC and synthetic elastomers. These products meet or exceed the performance and economic demands of the market place without the environmental problems. Our newest phthalate replacement is PLASTHALL PR-A610. This ester plasticizer is based 100% on renewable raw material streams. Our philosophy is not just to offer a phthalate alternative, but to provide our customers with products that will improve physical properties.

Specifically, several PR-series esters are more efficient in providing low temperature performance, and are much less volatile in high temperature applications. Following are several products that are excellent phthalate alternatives:


A low molecular weight, short change oligomer with very low viscosity which makes it well suited for plastisol applications. PLASTHALL PR-A200 is a highly efficient, very easy processing; offering a similar handling profile to standard monomerics. PLASTHALL PR-A200 provides an improvement in the level of resistance to extraction by various media when compared to monomerics such as DOP, DINP and linear phthalates. In addition, PLASTHALL PR-A200 offers excellent cold flex properties and compares favorably with most phthalates.

Click here to view the PLASTHALL PR-A200 Product Information Sheet and request a sample.


Similar to PR-A200 except it has improved migration properties, less volatility but is not quite as good at low temperatures.

Click here to view the PLASTHALL PR-A217 Product Information Sheet and request a sample.


Highly recommended as a phthalate alternative for PVC and Nitrile rubber, and is highlighted in the below data. PLASTHALL PR-LCOA is a low molecular weight, long chain oligomer designed to provide excellent extraction resistance to many fluids. PR-LCOA is equivalent to DOP in lowering hardness in PVC and nearly equal to other phthalate esters.

Click here to view the PLASTHALL LCOA Product Information Sheet and request a sample.


PLASTHALL® PR-A610 is certified by the USDA to be a 100% bio-based, and is an excellent phthalate replacement. PR-A610 can replace DEHP and DINP at equal levels offering comparable performance with the benefit of improved volatility resistance. PR-A610 is also 100% biodegradable under ASTM D6400 Standard Specification for Compostable Plastics, EN13432 Requirements for packaging recoverable through composting and biodegradation, and ISO 17088 Specification for compostable plastics.

Click here to view the PLASTHALL PR-A610 Product Information Sheet and request a sample.

Comparative PVC Performance Study

In this study, HallStar evaluated our phthalate alternatives PLASTHALL PR-A200, PLASTHALL PR-A217, PLASTHALL PR-LCOA, and PLASTHALL PR-A610 versus Hexamoll® DINCH® from BASF, Eastman® 168 from Eastman Chemical and Soft-n-Safe from Dow Chemical, as well as industry standards DINP and DOP. The test recipe consists of 100 pphr of a calendering grade PVC resin, 7.0 pphr of a heavy metals free stabilizer system, and 67 pphr of plasticizer. Compounds were tested using our full battery of PVC tests.

Click here to view the Comparative PVC Performance Study.

  • Data for original physicals indicates that PLASTHALL PR-A200 has the greatest plasticizing efficiency relative to all other plasticizers evaluated in this study as indicated by the lowest value for the 100% modulus, lowest compound durometer (Hardness, Shore A), and the highest value for elongation at break. PR-A200 is excellent for efficiency properties since its compound softening capabilities are better than all the other plasticizers tested. PLASTHALL PR-A200 viscosity is comparable to DINP and DOP which would not require any changes to the handling procedures.

  • Examining results for low-temperature brittleness, PLASTHALL PR-A200 was found to have the best low temperature (-44 oC) with Hexamoll® DINCH® second best.

  • Air oven aging results indicate that PLASTHALL PR-LCOA has the best volatility characteristics with PLASTHALL PR-A610 performing better than all the other offerings.

  • All plasticizers have excellent permanence following exposure to humid environments.

  • Extraction results indicate PR-LCOA is the most permanent of all the plasticizers in the study except for the soapy water extraction. With respect to non-polar mediums such as hexane and cottonseed oil, PR-LCOA far exceeds the performance of either DINP or DOP.

Comparative NBR Performance Study

In this study, HallStar evaluated the same four plasticzers as in the PVC study - several of our phthalate alternatives, PLASTHALL PR-A200, PLASTHALL PR-A217, PLASTHALL PR-LCOA, and our newest product PLASTHALL PR-A610. This ester plasticizer is 100% sourced from renewable raw material streams. Our products were compared against other phthalate alternatives Hexamoll® DINCH® and Palatinol DPHP from BASF, and Eastman 168 (DOTP) from Eastman, as well as industry standard phthalates, DIDP, DINP and DOP.

Click here to view the Comparative NBR Performance Study.

  • The test formulation consists of 100.0 phr of medium ACN nitrile, 5.0 phr zinc oxide, 1.0 phr TMQ, 65.0 phr of carbon black N660, 20.0 phr plasticizer variable, with a sulfur cure system consisting of 0.4 phr sulfur, 2.0 phr MBTS and 1.5 phr ZDMC. Compounds were evaluated using a battery of ASTM tests for physical properties, volatility, and extraction resistance.

  • Data for original physical properties indicate that all phthalate alternatives statistically perform equally in providing efficiency and the reduction of hardness. When examining low temperature brittleness PLASTHALL PR-A200 was found to offer the best low temperature (-41°C) with PLASTHALL PR-A217, Eastman 168, and Hexamoll® DINCH® in second, all at -35°C.

  • Air oven aging results indicate PLASTHALL PR-LCOA has the best volatility characteristic with PLASTHALL PR-A217 performing second best.

  • When looking at ASTM oil immersions, PLASTHALL PR-A610 is the most permanent of the plasticizers in the study with minimal weight and volume change.

  • With respect to other non-polar fluid immersions, such as ASTM Fuel C, PLASTHALL PR-LCOA and PLASTHALL PR-A217 perform best.

If we were to assign a ranking to the phthalate alternatives with the best overall performance, the ranking would be as follows: PLASTHALL PR-LCOA and PR-A610, PLASTHALL PR-A217, PLASTHALL PR-A200 and Eastman 168 (DOTP) and lastly Hexamoll® DINCH® and Palatinol DPHP.

Develop your own Phthalate Replacement using the PARAPLEX APPROACH

The PARAPLEX APPROACH is a molecular design system that HallStar has developed to formulate plasticizer solutions to customers tightly defined performance requirements. This means we can design a phthalate replacement that is more responsive to your specific needs in flexible PVC as well as various synthetic rubber applications.

Click here to fill out the PVC Plasticizer questionnaire.

Click here to fill out the Nitrile Rubber questionnaire.


Beyond phthalate alternatives, our HALLGREEN® line of bio-based additives represents the next level of environmentally friendly ester modifiers.

Click here to view a report on HallGreen application in PVC.

Click here to view additional information on HallGreen.