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BPA related information survey Basic chemical knowledge: Conversion rate of BPA (Benzene/Propylene - Cumene - PH/AC - BPA - LER,PC,TBBA), Benzene + Propylene = Cumene 　 　 　 　 　 　 0.66-0.7 　 0.36-0.4 　 1 　 　 　 　 　 　 Cumene = Phenol + Acetone 　 　 　 1.35 1 　 0.6 　 　 　 Phenol + Acetone = BPA 　 　 　 　 　 　 0.87 　 0.27 　 1 　 　 　 　 　 　 BPA + Br2 = TBBA 　 　 　 　 0.43 　 0.59 　 1 　 　 　 　 　 　 BPA + ECH = ER 　 　 　 　 　 　 0.8 　 0.55 　 1 　 　 　 　 　 　 BPA + ECH = LER 　 　 　 　 　 　 0.68 　 0.55 　 1 　 　 　 　 　 　 BPA + Cl2 + NaOH + CO + Sulfuric Acid /HCI = PC 0.9 　 0.315 　 0.4 　 0.1 　 　 　 1 + HCl = ECH 1.5 　 　 1 + Cl2 = ECH 0.67 　 　 1 Conversion cost BPA PH + RMB 2500/MT PH x 0.87 + AC x 0.27 + RMB 2500 1500-3000 CNY(Ranger) 200 USD (theoretical price) 166 USD (BPS’s tolling fee) LER, SER SER = BPA x 0.78 + ECH x 0.55 + 1500 LER = BPA x 0.78 + ECH x 0.56 + 3000 (According to Zhao/Sanjie) 1000-2000CNY (Ranger) 1700CNY (Chemease) According to Tan san, at Huangshan area, some ER plants charge only 1000CNY for tolling fee. So we can assume conversion cost for low-end SER is around 1000CNY. The conversion cost for LER is a little higher than SER but they do not differ a lot. TBBA 2000-3000 CNY (Ranger) ECH Glycerin x 1.5 + HCl x 1.0 + RMB 3000/MT C3 x 0.67 + Cl2 x 2.4 + RMB 3000/MT Basic physical property (appearance, freezing point, bulk density etc), Molecular formula C15H16O2 / (CH3)2C (C6H4OH) 2 Appearance White to light brown flakes or powder Density 1.195cm3/(25℃), solid Melting point 158 to 159 °C Boiling point 250-252°C/ (1.733Kpa) Production process of BPA, It is prepared by the condensation of acetone (hence the suffix A in the name) with two equivalents of phenol. The reaction is catalyzed by an acid, such as hydrochloric acid (HCl) or a sulphonated polystyrene resin. Typically, a large excess of phenol is used to ensure full condensation: (CH3)2CO + 2 C6H5OH → (CH3)2C (C6H4OH) 2 + H2O