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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 |
송진에서 정유를 증류하고 남는 수지, 특히 호박색의 고체 잔류물. 주로 미국에서 생산되며 약 90%의 수지 산(resin acid)과 10%의 중성물질로 되어 있다. 식품첨가물의 하나로 껌 기초제로 쓴다.
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