Ester Gum, E455, CAS no.8050-30-4, manufacturing process via refined wood rosin and glycerin. Ester Gum is the food-grade glycerol ester of wood rosin. Glycerol Esters of Wood Rosin (Ester Gum) appears as a yellow to amber hard rosin, is a food additive that is used as an emulsifier and stabilizer. As an experienced Ester Gum manufacturer and supplier, we has been supplying and exporting Ester Gum for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Ester Gum Specification ITEMS STANDARD Appearance Hard, yellow to pale amber-colored resin Identification Solubility: Insoluble in water, soluble in acetone Infrared absorption spectrum: Characteristic of the compound Ring and ball softening range () 82- 90 Acid value (mg KOH/g) 3-9 Specific gravity (25) 1.080- 1.090 Ash (%) 0.1 Lead (Pb) 2 mg/kg Arsenic (As) 3 mg/kg Mercury (Hg) 1 mg/kg Cadmium (Cd) 1 mg/kg Total heavy metals(as Pb) 10 mg/kg Total plate count 5000 cfu/g Yeast & mould 500 cfu/g Salmonella/ 10g Negative E. Coli/ 5g Negative