The water retention of methyl cellulose depends on its addition, viscosity, particle fineness and dissolution rate.Generally, if the addition amount is large, the fineness is small, and the viscosity is large, the water retention rate is high.Among them, the added amount has a great influence on the water retention rate, and the viscosity is not proportional to the water retention rate.The dissolution rate mainly depends on the degree of surface modification of the cellulose particles and the particle fineness.Among the above cellulose ethers, methyl cellulose and hydroxypropyl methyl cellulose have higher water retention rates. Methyl cellulose is soluble in cold water, and it will be difficult to dissolve in hot water. Its aqueous solution is very stable in the range of pH=3~12.It has good compatibility with starch, guar gum, etc. and many surfactants.When the temperature reaches the gelation temperature, gelation will occur. As for the correct use of hydroxypropyl methyl cellulose that we have introduced above, we must attract the attention and attention of every operator to better guarantee the appreciable usability of this chemical product.