Refined from hydrogenated rosin and disproportionated rosin, used in solid or liquid solder flux, hot melt adhesive. Specifications ItemsRHR-101RHR-102RHR-301RHR-302Fe-Co colour scale / Lovibond colour , max 11.5 XC0.3 22.0 XC0.6 11.5 XC0.3 22.0 XC0.6 Softening Point(R&B),°c ,min7878Acid Value ,mgKOH/g , min170170Tetrahydro resin acid ,%10.030.0~40.0Hydro-resin acid ,% , min90.092.0Abietic acid ...