Hydrogenated resin

Foral AX

Foral AX rosin is a thermoplastic, acidic resin produced by hydrogenating wood rosin to an exceptionally high degree.

Key properties

It is the palest, most highly stabilized rosin commercially available.

Compared with Staybelite resin, a hydrogenated rosin long established and widely used for its pale color and high oxidation stability, Foral AX resin has better initial color and color retention, and even greater resistance to oxidation.


Foral AX resin is especially indicated as the tackifier and resin modifier in solvent adhesives and hot melt applied coatings and adhesives that must excel in these properties.

Foral AX resin is particularly suited to food contact applications.

  • Tackifier or modifier for the following adhesive systems: hot melt/pressure-sensitive/solvent-based/emulsion-based/sealants
  • Modifier in solvent-based or heat-sealable coatings
  • Component of thermoplastic compounds and hot melt depilatory waxes
  • Plastifier/modifier of natural and synthetic rubber goods
Find out more

  • Highest degree of hydrogenation available
  • Exceptional color
  • Excellent heat stability and color retention
  • Good acid functionality

  • Low odor
  • Widely compatible with polymers and solvents
  • Broad regulatory approval

Softening point, ring & ball, °C, minimum


Color, USRG rosin scale, maximum


Acid number, mg KOH/g, minimum


Abietic acid, UV, %, maximum


Refractive index at 100 °C, maximum



Box, fiber

Keg, fiber

Drum, galvanized steel

Bulk, tank truck






Net weight

50 lbs, 22.68 kg

50 lbs, 22.68 kg

500 lbs, 226.8 kgs





Not regulated


21 CFR 175.105

21 CFR 176.210


21 CFR 175.125(b)
21 CFR 175.300
21 CFR 175.320
21 CFR 175.390
21 CFR 176.170
21 CFR 176.180
21 CFR 176.200
21 CFR 172.210
21 CFR 177.1400

21 CFR 177.1200
21 CFR 177.1210
21 CFR 177.2600
21 CFR 178.3120
21 CFR 178.3800
21 CFR 178.3850
21 CFR 178.3870
21 CFR 175.380

Pastillated or flaked resins may fuse, block, or lump during hot weather months, if stored near sources of heat, if double or triple stacked, or if stored for prolonged periods of time.

These forms of resin are prone to gradual oxidation, some more so than others. This could result in darkening and/or could have an adverse effect on solubility in organic solvents.

Care should be given to minimize opportunities for product oxidation throughout processing. Accordingly, it is strongly recommended that proper storage conditions and strict control of inventory be observed at all times, taking care that the oldest material is used first.