Specifications. Item No. Appearance Softening point (R&B ºC) Gardner Color (50%ethanol) Acid No. (mgKOH/g) RA90 Light yellow flaky solid ≥90 ＜5 ≥180 RA90W Light yellow flaky solid ≥90 ＜3 ≥180 RA100 Light yellow flaky solid ≥100 ＜5 ≥190 RA100W Light yellow flaky solid ≥100 ＜3 ≥190 RA120 Light yellow flaky solid ≥120 ＜5 ≥210 RA120W Light yellow flaky solid ≥120 ＜3 ≥210 RA140 Light yellow flaky solid ≥140 ＜10 ≥145 RA140W Light yellow flaky solid ≥140 ＜4 ≥145 RA160 Light yellow flaky solid ≥10 ＜10 ≥145 RA160W Light yellow flaky solid ≥160 ＜4 ≥145