酸式焦磷酸钠
简介
白色粉末或颗粒状，相对密度1.86g/cm3，易溶于水，不溶于乙醇; 其水溶液与稀释的无机酸一起加热后水解成磷酸; 具有吸湿性，吸湿后为六水合产物; 如果在220℃以上加热，就会分解成偏磷酸钠。
规格
| Items | Standards | ||
| Assay (%) (Na2H2P2O7) | ≥95.00% | ||
| P2O5 (%) | ≥63.00%,≤64.5% | ||
| Fluoride(PPM) | ≤10mg/kg | ||
| Cadmium(PPM) | ≤1mg/kg | ||
| Lead (PPM) | ≤1mg/kg | ||
| Mercury(PPM) | ≤1mg/kg | ||
| Arsenic(PPM) | ≤1mg/kg | ||
| Substances not dissolved in water(%) | ≤1.0% | ||
| PH value(%) | ≥3.7,≤4.5 | ||
| Loss on drying | ≤0.5% | ||
| 100mesh through | >95% | ||
| 200mesh through | >85% | ||
| 16mesh through | ≥95% | ||
| Ror | 28 | ||
| Aluminum(PPM) | ≤200 |
用途
应用于方便面上，可缩短水的复位时间，避免面条粘稠；
应用于饼干、糕点上，可缩短发酵时间，减少破损，使多孔空间有序，延长保质期。
