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By certification 
HPMC used for construction materials production, like cement, wall putty, concrete, and other coatings.
HYDROXY PROPYL METHYL CELLULOSE
CAS No.:9004653
Appearance White or off-white powder
Gel temperature(℃) 58-65 /62-70 /70-90
Methoxy content(%) 28-30/ 27-29 /19-24
Hydroxyl propyl content(%) 7-12/ 4-7.5/ 4-12
PH value 5.0-7.5
Particle size 80-100
Weight loss on drying(%) ≤5.0%
Ash content (Calculated as sulphate)(%) ≤1.5%
HYDROXY PROPYL METHYL CELLULOSE
CAS No.:9004653
Appearance White or off-white powder
Gel temperature(℃) 58-65 /62-70 /70-90
Methoxy content(%) 28-30/ 27-29 /19-24
Hydroxyl propyl content(%) 7-12/ 4-7.5/ 4-12
PH value 5.0-7.5
Particle size 80-100
Weight loss on drying(%) ≤5.0%
Ash content (Calculated as sulphate)(%) ≤1.5%