Tongbai county basification company gas station on river .

桐柏县碱化公司月河加油站。

Using refined cotton , chloroacetic acid , sodium hydroxide and hydrogen peroxide as main feedstock , sodium carboxymethyl cellulose was made by the process of basification , etherification , abstersion and drying .

以精制棉、氯乙酸、氢氧化钠和过氧化氢为原料，经过碱化、醚化、洗涤、干燥，制得羧甲基纤维素钠。

Meanwhile adopting two-step process of viscosity-decreasing method , i.e. adding hydrogen peroxide during the process of basification and abstersion to decrease the viscosity of alkaline cellulose , as a result the sodium carboxymethyl cellulose with ultra low viscosity was obtained .

同时，采用二步降粘法，在碱化及洗涤过程中加入过氧化氢，以降低纤维素钠的粘度，制得超低粘度的梭甲基纤维素钠。