Technical specifications:

1) Molar substitution degree: 1.8 - 2.0ms

2) Loss on drying: ≤*0%

3) Water insoluble matter: ≤0.5%

4) PH value: 6.0 - 8.5

5) Residue on ignition: ≤5%

6) Viscosity: 5 - **0,**0mPa.s

Physical properties:

1) White or yellowish mobile powder

2) *0 screen pass rate: ≥*9%

3) Intenerating point: **5 - **0°C

4) Vision density: 0.*5 - 0.*1lg/ml

5) Dispersing point: **5 - **0°C

6) Average moisture: 6% at *3°C

It can dissolve in other cool or hot water. Normally, it does not dissolve in organic

solvents. Viscosity change is small when pH value is within 2 to *2 but decrease

when pH value is low than the range.

As a non-ionic surface-active agent, it possesses the following characteristics in

addition to acts of thicker agent, suspending agent, adhesive agent, emulsification

agent, coating agent, water keeping agent and protective agent:

1) HEC can dissolve in both cool and hot water while it does not deposit

    when in hot or boiling water showing large range of non-gelatin capacity

2) Because of non-ionic base, it can be coexist with other water-soluble

    polymizers, surface-active agent and salts

3) Water keeping ability is twice that of methyl cellulose (MC) showing good

    flowage adjusting ability

4) It is stable in viscosity and anti-mildew

Applications:

HEC is mainly used as adhesive protective gelatin, thicker agent and stabilizing

agent as well as additives to make emulsion, frozen gelatin, lotion, eye clear agent,

suppository and tablets. HEC is also used for hydrophilic colloid, framework,

material, ready-made framework controlled release agent, and stabilizing agent

in foodstuff.