厂家直销增塑剂，pvc增塑剂专业厂家全国最低价格

厂家直销增塑剂，pvc增塑剂专业厂家全国最低价格
增塑剂
一、分子式：C18H18O5 分子量：314
二、技术指标：
质量等级                                                     一等品
外观                                                     无色透明或微黄色油状液体
色泽（APHA）                                              ≤ 40-60
酯含量：%                                                   ≥ 99
酸度：（以苯二甲酸计）%                              ≤ 0.02-0.03
闪点（开杯法）℃                                          ≥ 185
加热减量（125℃，2小时）%                          ≤ 0.3
热处理后色度                                           90
比重                                   &nbs