99%min
methyl cellulose
characteristics |
white or off-white crystalline powder or threadiness,odorless
|
identification |
|
ph |
5.0-8.0 |
viscosity |
12.0-18.0mpa·s |
residual solution |
≤0.5% |
loss on drying |
≤5.0% |
residue on ignition |
≤1.5% |
heavy metals |
≤20ppm |
arsenic salt |
conforms |
microbial limit |
conforms(0.0002%) |
assay |
methoxy:28%-30% hydroxypropoxy:7.0%-12.0% |